BCBS Alpha Prefix List from IAA to IZZ

BCBS Alpha Prefix ListBlue Cross Blue Shield CompaniesBCBS Phone Numbers
IAAUnassigned Prefix
IABUnassigned Prefix
IADUnassigned Prefix
IAFUnassigned Prefix
IAGAnthem Blue Cross Blue Shield of Virginia800-533-1120

855-856-9286 - Anthem Affordable Care Act
800-901-0020 - Anthem Medicare or Medicaid dual eligible program
888-290-9160 - Anthem Medicare Advantage
800-676-2583 - Blue Card
IAIBlue Cross Blue Shield of South Carolina800-868-2510
IAJUnassigned Prefix
IAKUnassigned Prefix
IALWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
IAMBlue Shield of California800-541-6652
800-622-0632 - Blue Card out of area
800-241-4896 - Blue Shield of California NASCO
IAPWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
IAQBlue Cross Blue Shield of Nebraska800-635-0579 Option 2
IARBlue Cross Blue Shield of Alabama800-760-6852
IASUnassigned Prefix
IATEmpire Blue Cross Blue Shield of New York800-552-6630
800-713-4173 - out of area Members
800-343-7283 - Traditional Indemnity
IAUBlue Cross Blue Shield of Nebraska800-635-0579 Option 2
IAVWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
IAWWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
IAXUnassigned Prefix
IAYBlue Cross Blue Shield of South Carolina800-868-2510
IAZUnassigned Prefix
IBABlue Cross Blue Shield of Illinois800-972-8088
IBBHorizon Blue Cross Blue Shield of New Jersey800-355-2583
IBCBlue Cross Blue Shield of South Carolina800-868-2510
IBDBlue Cross Blue Shield of South Carolina800-868-2510
IBEBlue Cross Blue Shield of Illinois800-972-8088
IBFWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
IBGBlue Cross Blue Shield of Illinois800-972-8088
IBHBlue Cross Blue Shield of Alabama800-760-6852
IBIWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
IBJBlue Cross Blue Shield of Michigan800-344-8525
IBKUnassigned Prefix
IBLUnassigned Prefix
IBMUnassigned Prefix
IBNUnassigned Prefix
IBOUnassigned Prefix
IBPWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
IBRBlue Cross Blue Shield of Michigan800-344-8525
IBTBlue Cross Blue Shield of Illinois800-972-8088
IBUBlue Cross Blue Shield of Alabama800-760-6852
IBVUnassigned Prefix
IBWBlue Cross Blue Shield of Illinois800-972-8088
IBYAnthem Central Region (OH, IN, KY)
IBZUnassigned Prefix
ICACarefirst Blue Cross Blue Shield of Maryland800-248-8410
ICBBlue Cross Blue Shield of Illinois800-972-8088
ICCIndependence Blue Cross800-275-2583 - Key Stone health Plan/Personal choice PPO
215-241-2365 - Key Stone 65
215-561-4877 - Personal Choice 65
888-926-1212 - Medigap
ICDCarefirst Blue Cross Blue Shield of Maryland800-248-8410
ICECarefirst Blue Cross Blue Shield of Maryland800-248-8410
ICFCarefirst Blue Cross Blue Shield of Maryland800-248-8410
ICGBlue Cross Blue Shield of South Carolina800-868-2510
ICHEmpire Blue Cross Blue Shield of New York800-552-6630
800-713-4173 - out of area Members
800-343-7283 - Traditional Indemnity
ICIUnassigned Prefix
ICJBlue Cross Blue Shield of Georgia855-295-5840

800-676-2583 - Blue Card Eligibility
800-282-2473 - Facility Claims
800-535-8291 -Guest Membership or HMO Away from Home Care
ICKCarefirst Blue Cross Blue Shield of Maryland800-248-8410
ICLCarefirst Blue Cross Blue Shield of Maryland800-248-8410
ICMUnassigned Prefix
ICNBlue Cross Blue Shield of Georgia855-295-5840

800-676-2583 - Blue Card Eligibility
800-282-2473 - Facility Claims
800-535-8291 -Guest Membership or HMO Away from Home Care
ICOUnassigned Prefix
ICPBlue Cross Blue Shield of Georgia855-295-5840

800-676-2583 - Blue Card Eligibility
800-282-2473 - Facility Claims
800-535-8291 -Guest Membership or HMO Away from Home Care
ICQAnthem Blue Cross Blue Shield of Virginia800-533-1120

855-856-9286 - Anthem Affordable Care Act
800-901-0020 - Anthem Medicare or Medicaid dual eligible program
888-290-9160 - Anthem Medicare Advantage
800-676-2583 - Blue Card
ICRAnthem Central Region (OH, IN, KY)
ICSBlue Cross Blue Shield of Michigan800-344-8525
ICTBlue Cross Blue Shield of Western New York800-950-0052
800-444-2012 - Blue Card
ICURegence Blue Cross Blue Shield of Utah866-227-0913
ICVBlue Cross Blue Shield of Michigan800-344-8525
ICWBlue Cross Blue Shield of Massachusetts800-882-2060 - Provider
800-451-8123 - Facility
800-882-1178 - Dental Providers
800-451-8124 - Ancillary Providers
ICXUnassigned Prefix
ICYAnthem Central Region (OH, IN, KY)
ICZCarefirst Blue Cross Blue Shield of Maryland800-248-8410
IDABlue Cross of Idaho866-482-2250
IDBUnassigned Prefix
IDCUnassigned Prefix
IDDAnthem Blue Cross Blue Shield of Virginia800-533-1120

855-856-9286 - Anthem Affordable Care Act
800-901-0020 - Anthem Medicare or Medicaid dual eligible program
888-290-9160 - Anthem Medicare Advantage
800-676-2583 - Blue Card
IDGCarefirst Blue Cross Blue Shield of Maryland800-248-8410
IDHUnassigned Prefix
IDJAnthem Blue Cross Blue Shield of Virginia800-533-1120

855-856-9286 - Anthem Affordable Care Act
800-901-0020 - Anthem Medicare or Medicaid dual eligible program
888-290-9160 - Anthem Medicare Advantage
800-676-2583 - Blue Card
IDKUnassigned Prefix
IDLUnassigned Prefix
IDNUnassigned Prefix
IDOUnassigned Prefix
IDPBlue Cross of Idaho866-482-2250
IDQUnassigned Prefix
IDRAnthem Blue Cross of California800-677-6669

800-444-2726 - National Accounts
866-700-2168 - Workers Compensation medical provider network

Senior Services Medicare Advantage
888-230-7338 - Blue Cross Senior HMO
877-811-3107 - Anthem Medicare PPO

800-333-3883 - Senior Services Medicare supplement

800-645-9785 - Meridian
IDSUnassigned Prefix
IDTUnassigned Prefix
IDUUnassigned Prefix
IDWAnthem Central Region (OH, IN, KY)
IDXBlue Cross Blue Shield of Illinois800-972-8088
IDYUnassigned Prefix
IDZCarefirst Blue Cross Blue Shield of Maryland800-248-8410
IEAUnassigned Prefix
IEBAnthem
IECBlue Shield of California800-541-6652
800-622-0632 - Blue Card out of area
800-241-4896 - Blue Shield of California NASCO
IEDAnthem Central Region (OH, IN, KY)
IEFUnassigned Prefix
IEGCarefirst Blue Cross Blue Shield of Maryland800-248-8410
IEHPremera Blue Cross800-722-4714
888-261-9562 - Blue Card
800-276-2583 - Eligibility and Benefits
IELBlue Cross Blue Shield of Illinois800-972-8088
IEMUnassigned Prefix
IENUnassigned Prefix
IEPBlue Cross Blue Shield of Louisiana800-495-2583
800-392-4076 - IVR
800-272-3029 - Blue Card
IEQAnthem Central Region (OH, IN, KY)
IERUnassigned Prefix
IESBlue Cross Blue Shield of Texas800-451-0287
877-299-2377 - Blue Essentials
877-774-8591 - Blue Cross Medicare Advantage
855-462-1781 - Care Management Programs
IETUnassigned Prefix
IEUBlue Cross Blue Shield of Louisiana800-495-2583
800-392-4076 - IVR
800-272-3029 - Blue Card
IEVBlue Cross Blue Shield of Alabama800-760-6852
IEWBlue Cross Blue Shield of Illinois800-972-8088
IEXUnassigned Prefix
IFAUnassigned Prefix
IFBWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
IFCBlue Cross Blue Shield of Western New York800-950-0052
800-444-2012 - Blue Card
IFDUnassigned Prefix
IFEUnassigned Prefix
IFFWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
IFGAnthem Central Region (OH, IN, KY)
IFHUnassigned Prefix
IFIUnassigned Prefix
IFLRegence Blue Cross Blue Shield of Oregon866-227-0913
IFPUnassigned Prefix
IFQCarefirst Blue Cross Blue Shield of Maryland800-248-8410
IFRAnthem Central Region (OH, IN, KY)
IFSBlue Cross Blue Shield of Kansas816-395-3929
816-395-2176 - Prior Authorization
800-320-9550 - Blue Card Claims
800-676-2583 - Eligibility
IFWUnassigned Prefix
IFXUnassigned Prefix
IFYCarefirst Blue Cross Blue Shield of Maryland800-248-8410
IGBBlue Cross Blue Shield of Georgia855-295-5840

800-676-2583 - Blue Card Eligibility
800-282-2473 - Facility Claims
800-535-8291 -Guest Membership or HMO Away from Home Care
IGCCarefirst Administrators866-945-9839
IGDWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
IGHUnassigned Prefix
IGIWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
IGKUnassigned Prefix
IGLUnassigned Prefix
IGNUnassigned Prefix
IGPWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
IGRUnassigned Prefix
IGSBlue Cross Blue Shield of Alabama800-760-6852
IGTBlue Shield of California800-541-6652
800-622-0632 - Blue Card out of area
800-241-4896 - Blue Shield of California NASCO
IGVUnassigned Prefix
IGWCarefirst Blue Cross Blue Shield of Maryland800-248-8410
IGXCarefirst Blue Cross Blue Shield of Maryland800-248-8410
IGYCarefirst Blue Cross Blue Shield of Maryland800-248-8410
IGZUnassigned Prefix
IHABlue Shield of California800-541-6652
800-622-0632 - Blue Card out of area
800-241-4896 - Blue Shield of California NASCO
IHBWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
IHCCarefirst Blue Cross Blue Shield of Maryland800-248-8410
IHDBlue Cross Blue Shield of Nebraska800-635-0579 Option 2
IHEAnthem Central Region (OH, IN, KY)
IHFEmpire Blue Cross Blue Shield of New York800-552-6630
800-713-4173 - out of area Members
800-343-7283 - Traditional Indemnity
IHGUnassigned Prefix
IHHBlue Cross Blue Shield of Alabama800-760-6852
IHKUnassigned Prefix
IHLUnassigned Prefix
IHMUnassigned Prefix
IHNUnassigned Prefix
IHPCarefirst Blue Cross Blue Shield of Maryland800-248-8410
IHQUnassigned Prefix
IHRUnassigned Prefix
IHSUnassigned Prefix
IHTBlue Cross Blue Shield of Alabama800-760-6852
IHVHorizon Blue Cross Blue Shield of New Jersey800-355-2583
IHWBlue Shield of California800-541-6652
800-622-0632 - Blue Card out of area
800-241-4896 - Blue Shield of California NASCO
IHXHorizon Blue Cross Blue Shield of New Jersey800-355-2583
IHZAnthem Blue Cross of California800-677-6669

800-444-2726 - National Accounts
866-700-2168 - Workers Compensation medical provider network

Senior Services Medicare Advantage
888-230-7338 - Blue Cross Senior HMO
877-811-3107 - Anthem Medicare PPO

800-333-3883 - Senior Services Medicare supplement

800-645-9785 - Meridian
IIBBlue Cross Blue Shield of Michigan800-344-8525
IIIBlue Cross Blue Shield of Tennessee800-924-7141

800-468-9736 - Blue Care
800-276-1978 - TennCare Select
IISBlue Cross Blue Shield of Michigan800-344-8525
IITBlue Cross Blue Shield of Illinois800-972-8088
IJAAnthem Central Region (OH, IN, KY)
IJBAnthem
IJCBlue Cross Blue Shield of South Carolina800-868-2510
IJDUnassigned Prefix
IJKUnassigned Prefix
IJMUnassigned Prefix
IJOUnassigned Prefix
IJPUnassigned Prefix
IJRBlue Cross of Idaho866-482-2250
IJSAnthem Central Region (OH, IN, KY)
IJUBlue Cross Blue Shield of Texas800-451-0287
877-299-2377 - Blue Essentials
877-774-8591 - Blue Cross Medicare Advantage
855-462-1781 - Care Management Programs
IJWHorizon Blue Cross Blue Shield of New Jersey800-355-2583
IJXUnassigned Prefix
IKAUnassigned Prefix
IKBUnassigned Prefix
IKCUnassigned Prefix
IKDWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
IKEIndependence Blue Cross800-275-2583 - Key Stone health Plan/Personal choice PPO
215-241-2365 - Key Stone 65
215-561-4877 - Personal Choice 65
888-926-1212 - Medigap
IKFIndependence Blue Cross800-275-2583 - Key Stone health Plan/Personal choice PPO
215-241-2365 - Key Stone 65
215-561-4877 - Personal Choice 65
888-926-1212 - Medigap
IKHWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
IKIUnassigned Prefix
IKLAnthem Blue Cross Blue Shield of Virginia800-533-1120

855-856-9286 - Anthem Affordable Care Act
800-901-0020 - Anthem Medicare or Medicaid dual eligible program
888-290-9160 - Anthem Medicare Advantage
800-676-2583 - Blue Card
IKMIndependence Blue Cross800-275-2583 - Key Stone health Plan/Personal choice PPO
215-241-2365 - Key Stone 65
215-561-4877 - Personal Choice 65
888-926-1212 - Medigap
IKNUnassigned Prefix
IKOUnassigned Prefix
IKPUnassigned Prefix
IKQWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
IKTBlue Cross of Idaho866-482-2250
IKZUnassigned Prefix
ILAUnassigned Prefix
ILBBlue Cross Blue Shield of Massachusetts800-882-2060 - Provider
800-451-8123 - Facility
800-882-1178 - Dental Providers
800-451-8124 - Ancillary Providers
ILCWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
ILDBlue Cross Blue Shield of Michigan800-344-8525
ILFUnassigned Prefix
ILGBlue Shield of California800-541-6652
800-622-0632 - Blue Card out of area
800-241-4896 - Blue Shield of California NASCO
ILHAnthem Blue Cross of California800-677-6669

800-444-2726 - National Accounts
866-700-2168 - Workers Compensation medical provider network

Senior Services Medicare Advantage
888-230-7338 - Blue Cross Senior HMO
877-811-3107 - Anthem Medicare PPO

800-333-3883 - Senior Services Medicare supplement

800-645-9785 - Meridian
ILIBlue Shield of California800-541-6652
800-622-0632 - Blue Card out of area
800-241-4896 - Blue Shield of California NASCO
ILLAnthem Blue Cross of California800-677-6669

800-444-2726 - National Accounts
866-700-2168 - Workers Compensation medical provider network

Senior Services Medicare Advantage
888-230-7338 - Blue Cross Senior HMO
877-811-3107 - Anthem Medicare PPO

800-333-3883 - Senior Services Medicare supplement

800-645-9785 - Meridian
ILMAnthem Blue Cross of California800-677-6669

800-444-2726 - National Accounts
866-700-2168 - Workers Compensation medical provider network

Senior Services Medicare Advantage
888-230-7338 - Blue Cross Senior HMO
877-811-3107 - Anthem Medicare PPO

800-333-3883 - Senior Services Medicare supplement

800-645-9785 - Meridian
ILNBlue Cross Blue Shield of Tennessee800-924-7141

800-468-9736 - Blue Care
800-276-1978 - TennCare Select
ILPUnassigned Prefix
ILRAnthem Central Region (OH, IN, KY)
ILSPremera Blue Cross800-722-4714
888-261-9562 - Blue Card
800-276-2583 - Eligibility and Benefits
ILTBlue Cross Blue Shield of Illinois800-972-8088
ILUAnthem Blue Cross of California800-677-6669

800-444-2726 - National Accounts
866-700-2168 - Workers Compensation medical provider network

Senior Services Medicare Advantage
888-230-7338 - Blue Cross Senior HMO
877-811-3107 - Anthem Medicare PPO

800-333-3883 - Senior Services Medicare supplement

800-645-9785 - Meridian
ILWUnassigned Prefix
ILYAnthem Blue Cross of California800-677-6669

800-444-2726 - National Accounts
866-700-2168 - Workers Compensation medical provider network

Senior Services Medicare Advantage
888-230-7338 - Blue Cross Senior HMO
877-811-3107 - Anthem Medicare PPO

800-333-3883 - Senior Services Medicare supplement

800-645-9785 - Meridian
IMAExcellus Blue Cross Blue Shield of New York800-920-8889
800-662-1220 - Blue Option Plus
800-724-1675 - Dental
IMBUnassigned Prefix
IMCPremera Blue Cross800-722-4714
888-261-9562 - Blue Card
800-276-2583 - Eligibility and Benefits
IMDAnthem
IMEUnassigned Prefix
IMFUnassigned Prefix
IMGAnthem Blue Cross of California800-677-6669

800-444-2726 - National Accounts
866-700-2168 - Workers Compensation medical provider network

Senior Services Medicare Advantage
888-230-7338 - Blue Cross Senior HMO
877-811-3107 - Anthem Medicare PPO

800-333-3883 - Senior Services Medicare supplement

800-645-9785 - Meridian
IMIWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
IMMAnthem Blue Cross Blue Shield of Nevada800-332-3842 or 877-833-5742
HMO, PPO, Medicare Supplement Plans
800-827-6422 - Guest mebership or Away from Home Care

Anthem associates and Retirees
800-392-6117
303-861-7799
800-234-0111

Dental
800-231-2583
800-627-0004
888-209-7852

800-865-1044 - Anthem Employee Assistance Program

Anthem Vision
800-231-2583
866-723-0515

800-554-8008 - Blue Card
800-433-5447 - NASCO PAR
IMOUnassigned Prefix
IMPBlue Cross Blue Shield of Alabama800-760-6852
IMQUnassigned Prefix
IMRUnassigned Prefix
IMUUnassigned Prefix
IMVUnassigned Prefix
IMWUnassigned Prefix
IMYUnassigned Prefix
IMZUnassigned Prefix
INAUnassigned Prefix
INBPremera Blue Cross800-722-4714
888-261-9562 - Blue Card
800-276-2583 - Eligibility and Benefits
INCAnthem Blue Cross of California800-677-6669

800-444-2726 - National Accounts
866-700-2168 - Workers Compensation medical provider network

Senior Services Medicare Advantage
888-230-7338 - Blue Cross Senior HMO
877-811-3107 - Anthem Medicare PPO

800-333-3883 - Senior Services Medicare supplement

800-645-9785 - Meridian
INDAnthem Blue Cross Blue Shield of Virginia800-533-1120

855-856-9286 - Anthem Affordable Care Act
800-901-0020 - Anthem Medicare or Medicaid dual eligible program
888-290-9160 - Anthem Medicare Advantage
800-676-2583 - Blue Card
INEBlue Cross Blue Shield of South Carolina800-868-2510
INFBlue Shield of California800-541-6652
800-622-0632 - Blue Card out of area
800-241-4896 - Blue Shield of California NASCO
INGUnassigned Prefix
INHRegence Blue Cross Blue Shield of Utah866-227-0913
INIBlue Cross Blue Shield of Delaware800-572-2872
INJUnassigned Prefix
INMUnassigned Prefix
INOBlue Shield of California800-541-6652
800-622-0632 - Blue Card out of area
800-241-4896 - Blue Shield of California NASCO
INQUnassigned Prefix
INRUnassigned Prefix
INSWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
INTBlue Cross Blue Shield of Alabama800-760-6852
INUBlue Cross Blue Shield of South Carolina800-868-2510
INVUnassigned Prefix
INWIndependence Blue Cross800-275-2583 - Key Stone health Plan/Personal choice PPO
215-241-2365 - Key Stone 65
215-561-4877 - Personal Choice 65
888-926-1212 - Medigap
INXUnassigned Prefix
INYAnthem Blue Cross of California800-677-6669

800-444-2726 - National Accounts
866-700-2168 - Workers Compensation medical provider network

Senior Services Medicare Advantage
888-230-7338 - Blue Cross Senior HMO
877-811-3107 - Anthem Medicare PPO

800-333-3883 - Senior Services Medicare supplement

800-645-9785 - Meridian
INZUnassigned Prefix
IOABlue Cross Blue Shield of ArizonaTucson
800-752-0193
520-745-1883

Phoenix
602-864-4400
800-232-2345

Flagstaff
800-423-6484
928-526-0232
IOBUnassigned Prefix
IODUnassigned Prefix
IOEEmpire Blue Cross Blue Shield of New York800-552-6630
800-713-4173 - out of area Members
800-343-7283 - Traditional Indemnity
IOKAnthem Blue Cross Blue Shield of Virginia800-533-1120

855-856-9286 - Anthem Affordable Care Act
800-901-0020 - Anthem Medicare or Medicaid dual eligible program
888-290-9160 - Anthem Medicare Advantage
800-676-2583 - Blue Card
IONBlue Cross Blue Shield of Florida800-727-2227
IOPUnassigned Prefix
IOQUnassigned Prefix
IOSBlue Cross Blue Shield of Louisiana800-495-2583
800-392-4076 - IVR
800-272-3029 - Blue Card
IOTHighmark Blue Cross Blue Shield800-572-2872 - Delaware
800-294-9568 - Pennsylvania
IOVUnassigned Prefix
IOZUnassigned Prefix
IPAHighmark Blue Cross Blue Shield800-572-2872 - Delaware
800-294-9568 - Pennsylvania
IPBUnassigned Prefix
IPDUnassigned Prefix
IPEBlue Shield of California800-541-6652
800-622-0632 - Blue Card out of area
800-241-4896 - Blue Shield of California NASCO
IPFWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
IPGAnthem Blue Cross Blue Shield of Virginia800-533-1120

855-856-9286 - Anthem Affordable Care Act
800-901-0020 - Anthem Medicare or Medicaid dual eligible program
888-290-9160 - Anthem Medicare Advantage
800-676-2583 - Blue Card
IPHBlue Cross Blue Shield of Kansas816-395-3929
816-395-2176 - Prior Authorization
800-320-9550 - Blue Card Claims
800-676-2583 - Eligibility
IPKUnassigned Prefix
IPMHighmark Blue Cross Blue Shield800-572-2872 - Delaware
800-294-9568 - Pennsylvania
IPNHighmark Blue Cross Blue Shield800-572-2872 - Delaware
800-294-9568 - Pennsylvania
IPPBlue Cross Blue Shield of Alabama800-760-6852
IPRWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
IPSBlue Shield of California800-541-6652
800-622-0632 - Blue Card out of area
800-241-4896 - Blue Shield of California NASCO
IPTBlue Cross Blue Shield of Illinois800-972-8088
IPUBlue Cross of Idaho866-482-2250
IPVBlue Cross Blue Shield of Michigan800-344-8525
IPWRegence Blue Shield of Idaho888-367-2117
IQAPremera Blue Cross800-722-4714
888-261-9562 - Blue Card
800-276-2583 - Eligibility and Benefits
IQCUnassigned Prefix
IQEBlue Cross Blue Shield of Tennessee800-924-7141

800-468-9736 - Blue Care
800-276-1978 - TennCare Select
IQHUnassigned Prefix
IQMUnassigned Prefix
IQTUnassigned Prefix
IQUBlue Cross Blue Shield of Michigan800-344-8525
IQVAnthem Blue Cross of California800-677-6669

800-444-2726 - National Accounts
866-700-2168 - Workers Compensation medical provider network

Senior Services Medicare Advantage
888-230-7338 - Blue Cross Senior HMO
877-811-3107 - Anthem Medicare PPO

800-333-3883 - Senior Services Medicare supplement

800-645-9785 - Meridian
IQWAnthem Blue Cross of California800-677-6669

800-444-2726 - National Accounts
866-700-2168 - Workers Compensation medical provider network

Senior Services Medicare Advantage
888-230-7338 - Blue Cross Senior HMO
877-811-3107 - Anthem Medicare PPO

800-333-3883 - Senior Services Medicare supplement

800-645-9785 - Meridian
IQXAnthem Blue Cross of California800-677-6669

800-444-2726 - National Accounts
866-700-2168 - Workers Compensation medical provider network

Senior Services Medicare Advantage
888-230-7338 - Blue Cross Senior HMO
877-811-3107 - Anthem Medicare PPO

800-333-3883 - Senior Services Medicare supplement

800-645-9785 - Meridian
IQZHorizon Blue Cross Blue Shield of New Jersey800-355-2583
IRAHorizon Blue Cross Blue Shield of New Jersey800-355-2583
IRDBlue Cross Blue Shield of Massachusetts800-882-2060 - Provider
800-451-8123 - Facility
800-882-1178 - Dental Providers
800-451-8124 - Ancillary Providers
IREUnassigned Prefix
IRGUnassigned Prefix
IRMUnassigned Prefix
IROUnassigned Prefix
IRPBlue Cross Blue Shield of Florida800-727-2227
IRSBlue Cross Blue Shield of Florida800-727-2227
IRTUnassigned Prefix
IRUAnthem Central Region (OH, IN, KY)
IRXUnassigned Prefix
IRZAnthem Blue Cross of California800-677-6669

800-444-2726 - National Accounts
866-700-2168 - Workers Compensation medical provider network

Senior Services Medicare Advantage
888-230-7338 - Blue Cross Senior HMO
877-811-3107 - Anthem Medicare PPO

800-333-3883 - Senior Services Medicare supplement

800-645-9785 - Meridian
ISAAnthem Central Region (OH, IN, KY)
ISBPremera Blue Cross800-722-4714
888-261-9562 - Blue Card
800-276-2583 - Eligibility and Benefits
ISCHorizon Blue Cross Blue Shield of New Jersey800-355-2583
ISDUnassigned Prefix
ISEUnassigned Prefix
ISFUnassigned Prefix
ISGAnthem Central Region (OH, IN, KY)
ISHCarefirst Blue Cross Blue Shield of Maryland800-248-8410
ISIAnthem Blue Cross of California800-677-6669

800-444-2726 - National Accounts
866-700-2168 - Workers Compensation medical provider network

Senior Services Medicare Advantage
888-230-7338 - Blue Cross Senior HMO
877-811-3107 - Anthem Medicare PPO

800-333-3883 - Senior Services Medicare supplement

800-645-9785 - Meridian
ISJUnassigned Prefix
ISKCarefirst Blue Cross Blue Shield of Maryland800-248-8410
ISLWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
ISMHighmark Blue Cross Blue Shield800-572-2872 - Delaware
800-294-9568 - Pennsylvania
ISPBlue Cross of Idaho866-482-2250
ISQUnassigned Prefix
ISRCarefirst Blue Cross Blue Shield of Maryland800-248-8410
ISSHorizon Blue Cross Blue Shield of New Jersey800-355-2583
ISTBlue Cross of Idaho866-482-2250
ISUBlue Cross of Idaho866-482-2250
ISVBlue Cross Blue Shield of Michigan800-344-8525
ISXWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
ISYUnassigned Prefix
ISZUnassigned Prefix
ITACarefirst Blue Cross Blue Shield of Maryland800-248-8410
ITBWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
ITCBlue Cross Blue Shield of Massachusetts800-882-2060 - Provider
800-451-8123 - Facility
800-882-1178 - Dental Providers
800-451-8124 - Ancillary Providers
ITDUnassigned Prefix
ITEBlue Cross Blue Shield of North Carolina800-446-8053
ITFBlue Cross Blue Shield of Michigan800-344-8525
ITGUnassigned Prefix
ITLBlue Cross Blue Shield of Illinois800-972-8088
ITMBlue Cross Blue Shield of Michigan800-344-8525
ITPAnthem Central Region (OH, IN, KY)
ITQWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
ITREmpire Blue Cross Blue Shield of New York800-552-6630
800-713-4173 - out of area Members
800-343-7283 - Traditional Indemnity
ITSBlue Cross Blue Shield of Arkansas Blue Advantage800-827-4814
501-378-2307

800-451-7302 - Pre Certification
ITTAnthem Blue Cross of California800-677-6669

800-444-2726 - National Accounts
866-700-2168 - Workers Compensation medical provider network

Senior Services Medicare Advantage
888-230-7338 - Blue Cross Senior HMO
877-811-3107 - Anthem Medicare PPO

800-333-3883 - Senior Services Medicare supplement

800-645-9785 - Meridian
ITUUnassigned Prefix
ITVRegence Blue Cross Blue Shield of Washington866-227-0913
ITWBlue Cross Blue Shield of Illinois800-972-8088
ITYRegence Blue Cross Blue Shield of Washington866-227-0913
IUAWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
IUBAnthem Central Region (OH, IN, KY)
IUCUnassigned Prefix
IUEEmpire Blue Cross Blue Shield of New York800-552-6630
800-713-4173 - out of area Members
800-343-7283 - Traditional Indemnity
IUFAnthem Central Region (OH, IN, KY)
IUGPremera Blue Cross800-722-4714
888-261-9562 - Blue Card
800-276-2583 - Eligibility and Benefits
IUHBlue Cross Blue Shield of Massachusetts800-882-2060 - Provider
800-451-8123 - Facility
800-882-1178 - Dental Providers
800-451-8124 - Ancillary Providers
IUKBlue Cross Blue Shield of South Carolina800-868-2510
IULCarefirst Blue Cross Blue Shield of Maryland800-248-8410
IUMUnassigned Prefix
IUOAnthem Central Region (OH, IN, KY)
IUPAnthem Taft Hartley National Account888-287-0032
IUQCarefirst Blue Cross Blue Shield of Maryland800-248-8410
IURIndependence Blue Cross800-275-2583 - Key Stone health Plan/Personal choice PPO
215-241-2365 - Key Stone 65
215-561-4877 - Personal Choice 65
888-926-1212 - Medigap
IUSUnassigned Prefix
IUUAnthem Central Region (OH, IN, KY)
IUWAnthem Central Region (OH, IN, KY)
IUXUnassigned Prefix
IUZEmpire Blue Cross Blue Shield of New York800-552-6630
800-713-4173 - out of area Members
800-343-7283 - Traditional Indemnity
IVBBlue Cross Blue Shield of Michigan800-344-8525
IVDUnassigned Prefix
IVGUnassigned Prefix
IVJAnthem
IVKBlue Cross Blue Shield of Mississippi800-257-5825
IVLUnassigned Prefix
IVMUnassigned Prefix
IVOHorizon Blue Cross Blue Shield of New Jersey800-355-2583
IVPBlue Cross Blue Shield of Michigan800-344-8525
IVRUnassigned Prefix
IVSAnthem Blue Cross of California800-677-6669

800-444-2726 - National Accounts
866-700-2168 - Workers Compensation medical provider network

Senior Services Medicare Advantage
888-230-7338 - Blue Cross Senior HMO
877-811-3107 - Anthem Medicare PPO

800-333-3883 - Senior Services Medicare supplement

800-645-9785 - Meridian
IVTRegence Blue Cross Blue Shield of Oregon866-227-0913
IVUUnassigned Prefix
IVWAnthem Central Region (OH, IN, KY)
IVYUnassigned Prefix
IVZAnthem Central Region (OH, IN, KY)
IWAAnthem
IWBBlue Cross Blue Shield of Nebraska800-635-0579 Option 2
IWDCarefirst Blue Cross Blue Shield of Maryland800-248-8410
IWEWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
IWGExcellus Blue Cross Blue Shield of New York800-920-8889
800-662-1220 - Blue Option Plus
800-724-1675 - Dental
IWHCarefirst Blue Cross Blue Shield of Maryland800-248-8410
IWJAnthem
IWKBlue Cross Blue Shield of Michigan800-344-8525
IWLUnassigned Prefix
IWMBlue Shield of Northeastern New York800-444-4552
800-429-9886 - Blue Card
IWNAnthem Central Region (OH, IN, KY)
IWOAnthem Central Region (OH, IN, KY)
IWPBlue Cross Blue Shield of Michigan800-344-8525
IWSWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
IWTCapital Blue Cross866-688-2242
IWUAnthem Blue Cross Blue Shield of Virginia800-533-1120

855-856-9286 - Anthem Affordable Care Act
800-901-0020 - Anthem Medicare or Medicaid dual eligible program
888-290-9160 - Anthem Medicare Advantage
800-676-2583 - Blue Card
IWVBlue Cross Blue Shield of Kansas816-395-3929
816-395-2176 - Prior Authorization
800-320-9550 - Blue Card Claims
800-676-2583 - Eligibility
IWWUnassigned Prefix
IWYEmpire Blue Cross Blue Shield of New York800-552-6630
800-713-4173 - out of area Members
800-343-7283 - Traditional Indemnity
IWZBlue Cross Blue Shield of Michigan800-344-8525
IXAUnassigned Prefix
IXBUnassigned Prefix
IXCUnassigned Prefix
IXDAnthem Blue Cross of California800-677-6669

800-444-2726 - National Accounts
866-700-2168 - Workers Compensation medical provider network

Senior Services Medicare Advantage
888-230-7338 - Blue Cross Senior HMO
877-811-3107 - Anthem Medicare PPO

800-333-3883 - Senior Services Medicare supplement

800-645-9785 - Meridian
IXEAnthem Central Region (OH, IN, KY)
IXFAnthem Central Region (OH, IN, KY)
IXGAnthem Central Region (OH, IN, KY)
IXHAnthem Central Region (OH, IN, KY)
IXIUnassigned Prefix
IXJAnthem Central Region (OH, IN, KY)
IXKAnthem Central Region (OH, IN, KY)
IXNAnthem Central Region (OH, IN, KY)
IXPUnassigned Prefix
IXRUnassigned Prefix
IXTAnthem Blue Cross of California800-677-6669

800-444-2726 - National Accounts
866-700-2168 - Workers Compensation medical provider network

Senior Services Medicare Advantage
888-230-7338 - Blue Cross Senior HMO
877-811-3107 - Anthem Medicare PPO

800-333-3883 - Senior Services Medicare supplement

800-645-9785 - Meridian
IXUIndependence Blue Cross800-275-2583 - Key Stone health Plan/Personal choice PPO
215-241-2365 - Key Stone 65
215-561-4877 - Personal Choice 65
888-926-1212 - Medigap
IXWBlue Cross Blue Shield of Michigan800-344-8525
IXXAnthem Central Region (OH, IN, KY)
IXYAnthem Central Region (OH, IN, KY)
IYCIndependence Blue Cross800-275-2583 - Key Stone health Plan/Personal choice PPO
215-241-2365 - Key Stone 65
215-561-4877 - Personal Choice 65
888-926-1212 - Medigap
IYEUnassigned Prefix
IYFAnthem Central Region (OH, IN, KY)
IYHAnthem
IYOUnassigned Prefix
IYPUnassigned Prefix
IYQUnassigned Prefix
IYSUnassigned Prefix
IYTUnassigned Prefix
IZABlue Cross Blue Shield of Alabama800-760-6852
IZCAnthem Central Region (OH, IN, KY)
IZDUnassigned Prefix
IZECarefirst Blue Cross Blue Shield of Maryland800-248-8410
IZOUnassigned Prefix
IZPBlue Cross of Idaho866-482-2250
IZQUnassigned Prefix
IZSBlue Cross Blue Shield of Michigan800-344-8525
IZUWellmark Blue Cross Blue ShieldIOWA State
800-524-9242
800-362-2218 - Out of State Claims

South Dakota State
800-774-3892
800-774-3892 - Out of State Claims
IZZAnthem Blue Cross of California800-677-6669

800-444-2726 - National Accounts
866-700-2168 - Workers Compensation medical provider network

Senior Services Medicare Advantage
888-230-7338 - Blue Cross Senior HMO
877-811-3107 - Anthem Medicare PPO

800-333-3883 - Senior Services Medicare supplement

800-645-9785 - Meridian

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