| 1477 | Medicare Advantage Private Fee-For-Services (PFFS) | BCBS SC Advantage | C63 | N | N | Y | N |
| 27 | 1-888-OHIOCOMP | OHIOCOMP | 31147 | Y | N | Y | N |
| 28 | 1199 National Benefit Fund | NBF | 13162 | Y | N | Y | N |
| 338 | 1199 SEIU National Benefit Fund | 1199 SEIU | 13162 | Y | N | Y | N |
| 29 | 3-Hab | 3HAB | 31147 | Y | N | Y | N |
| 32 | ABC Health Plan | ABCHEALTH | 48185 | Y | N | Y | N |
| 1349 | ACCESS ADMINISTRATORS | ACCESS ADMIN | Not Available | Y | N | Y | N |
| 34 | Acclaim | ACCLAIM | 64071 | Y | N | Y | N |
| 35 | Acclaim Repricing | ACCLAIM REPRICE | 21356 | Y | N | Y | N |
| 36 | Acordia National | ACORDIA | 87815 | Y | N | Y | N |
| 37 | ACS Benefit Services Inc | ACSBSI | 72467 | Y | N | Y | Y |
| 38 | Activa Benefit Services LLC | ACTIVA | 38254 | Y | N | Y | N |
| 39 | Admar Corporation | ADMAR | 95285 | Y | N | Y | N |
| 1340 | ADMINISTRATION SYSTEMS RESEARCH COR | ADMIN SYSTEMS RESEARCH | 38265 | Y | N | Y | N |
| 1339 | ADMINISTRATIVE CONCEPTS INC. | ADMINISTRATIVE CONCEPTS | 22384 | Y | N | Y | N |
| 41 | AdminOne | ADMIN1 | Not Available | Y | N | Y | N |
| 1350 | ADVANTAGE HEALTH SOLUTIONS | ADV HEALTH SOL | 35209 | Y | N | Y | N |
| 42 | Advantra | ADVANTRA | 25126 | Y | N | Y | Y |
| 1337 | Advantra Freedom | Advantra Freedom | 25152 | Y | N | Y | Y |
| 43 | AdvoCare Incorporated | OHIO BWC 3 | 31147 | Y | N | Y | N |
| 44 | Advocate Health Centers | AHC | 36320 | Y | N | Y | N |
| 45 | Advocate Health Partners | AHP | 65093 | Y | N | Y | N |
| 46 | Aetna | AETNA | Not Available | Y | N | Y | Y |
| 1406 | Aetna TX Medicaid and CHIP | Medicaid TX CHIP | 38692 | Y | N | Y | N |
| 1410 | Affinity Health Plan | Affinity | 13334 | N | N | Y | N |
| 1304 | Affordable Health (AETNA) | AAH | 57604 | Y | U | Y | N |
| 47 | AFL-CIO Trust Fund | AFL CIO | TH041 | Y | U | Y | N |
| 48 | AFTRA Health Fund | AFTRA | 13346 | Y | N | Y | N |
| 49 | AGA | AGA | 37280 | Y | N | Y | N |
| 30 | AGIA Inc | AGIA | 95241 | Y | N | Y | N |
| 51 | AHP Pennsylvania | AHP PA | 23251 | Y | N | Y | N |
| 15 | ALABAMA BLUE SHIELD | BS AL | 2423 | N | Y | Y | Y |
| 52 | Alabama Health Partners | AL HEALTH | SX045 | Y | U | Y | N |
| 1095 | ALABAMA MEDICAID | MEDICAID AL | 4479 | N | Y | Y | Y |
| 1096 | ALABAMA MEDICARE | MEDICARE AL | 2468 | N | Y | Y | Y |
| 53 | Alaska Childrens Services Inc | AK CHILDREN | 91136 | Y | N | Y | N |
| 55 | Alaska Laborers Construction Industry Trust | ALCIT | 91136 | Y | N | Y | N |
| 1089 | ALASKA MEDICAID | MEDICAID AK | 4489 | N | Y | Y | Y |
| 1090 | ALASKA MEDICARE | MEDICARE AK | 1455 | N | Y | Y | Y |
| 56 | Alaska Pipe Trades Local 375 | AK PIPE 375 | 91136 | Y | N | Y | N |
| 57 | Alaska United Food and Commercial Workers Health and Welfare | AK UFCWH | 91136 | Y | N | Y | N |
| 58 | ALICARE | ALICARE | 13550 | Y | N | Y | N |
| 59 | Alignis | ALIGNIS | 58213 | Y | N | Y | N |
| 61 | Alliance PPO Inc Maryland | ALLIANCE MD | 52149 | Y | N | Y | N |
| 62 | Alliant Health Plans of Georgia | ALLIANT GA | 58234 | Y | N | Y | N |
| 63 | Allied Administrators | ALLIED CA | 94177 | Y | N | Y | N |
| 64 | Allied Benefit Systems | ABS | 37308 | Y | N | Y | N |
| 65 | ALPS CompCare | OHIO BWC 4 | 31147 | Y | N | Y | N |
| 33 | Alta Bates Medical Assocs Medical Corp | ABMA | E3510 | Y | U | Y | N |
| 66 | Alta Bates Medical Group | ALTA BMG | 94318 | Y | U | Y | N |
| 67 | Alta Health Strategies | ALTA HS | 87043 | Y | N | Y | N |
| 68 | Alta Senior Care | ALTA SR | E3510 | Y | U | Y | N |
| 1351 | AMA INSURANCE AGENCY, INC | AMA | Not Available | Y | N | Y | N |
| 69 | Amalgamated Life | AMALGAMATED | 13550 | Y | N | Y | N |
| 70 | AmeraPlan | AMERAPLAN | 38219 | Y | N | Y | N |
| 71 | AmeriBen Solutions Inc | AMERIBEN | 75137 | Y | N | Y | N |
| 72 | Americaid Community Care MD | ACC MD | 27517 | Y | N | Y | N |
| 73 | Americaid Community Care NJ | ACC NJ | 27516 | Y | N | Y | N |
| 74 | American Administrative Group | AAG | 75240 | Y | N | Y | N |
| 75 | American Benefit Administrative Services Inc | ABAS | 37225 | Y | N | Y | N |
| 1352 | AMERICAN BENEFITS MANAGEMENT | AMERICAN BENE | 34187 | Y | N | Y | N |
| 76 | American Chiropractic Network | ACN | 41161 | Y | N | Y | N |
| 77 | American Chiropractic Network IPA of NY | ACNIPA NY | 41160 | Y | N | Y | N |
| 78 | American Commercial Barge Lines | ACBL | 37128 | Y | N | Y | N |
| 79 | American Community Mutual Insurance | ACMI | 60305 | Y | N | Y | Y |
| 1353 | AMERICAN FAMILY INSURANCE CO | AMERICAN FAM | Not Available | Y | N | Y | N |
| 80 | American General | AMGEN | 62030 | Y | N | Y | Y |
| 81 | American Healthcare Alliance | AHA | 01066 | Y | N | Y | N |
| 82 | American Imaging Management Inc | AIM | 36369 | Y | N | Y | N |
| 83 | American International Group Inc | AIG | 87726 | Y | N | Y | Y |
| 84 | American LIFECARE | LIFECARE | 72099 | Y | N | Y | N |
| 86 | American Medical Security Inc | AMSI | 81400 | Y | N | Y | N |
| 1354 | AMERICAN PIONEER BREVARD PHY NETWOR | AM PIONEER BREVARD | Not Available | Y | N | Y | N |
| 1355 | AMERICAN PIONEER SOUTH FLORIDA | AM PIONEER S FL | Not Available | Y | N | Y | N |
| 87 | American Postal Workers Union Health Plan | APWUHP | 44444 | Y | N | Y | Y |
| 88 | American Republic Insurance | ARI | 42011 | Y | N | Y | Y |
| 606 | American Worker Health Plan Family | American Worker Health | 37322 | Y | N | Y | N |
| 616 | American Worker Health Plus | American Worker | 37322 | Y | N | Y | N |
| 704 | American Worker Health Plus | AWHP | 37322 | Y | N | Y | N |
| 1357 | AMERICAS HEALTH CHOICE | AMERICAS HEALTH CHOICE | Not Available | Y | N | Y | N |
| 1419 | Americas PPO\Americas TPA | Americas PPO | 41178 | N | N | Y | N |
| 90 | AmeriChoice of New Jersey Inc | AMERICHOICE CAID NJ | 86047 | Y | N | Y | N |
| 89 | AmeriChoice of New Jersey Personal Care Plus | AMERICHOICE CARE NJ | 86001 | Y | N | Y | Y |
| 92 | AmeriChoice of New York Inc | AMERICHOICE CAID NY | 86048 | Y | N | Y | N |
| 91 | AmeriChoice of New York Personal Care Plus | AMERICHOICE CARE NY | 86002 | Y | N | Y | N |
| 94 | AmeriChoice of Pennsylvania Inc | AMERICHOICE CAID PA | 86049 | Y | N | Y | N |
| 93 | AmeriChoice of Pennsylvania Personal Care Plus | AMERICHOICE CARE PA | 86003 | Y | N | Y | N |
| 1358 | AMERIGROUP -26375 | AMERIGROUP- 26375 | Not Available | Y | N | Y | N |
| 95 | Amerigroup Corporation Ft Worth | AMERIGROUP FT WORTH | 27514 | Y | N | Y | N |
| 96 | Amerigroup Corporation Houston | AMERIGROUP HOUSTON | Not Available | Y | N | Y | N |
| 97 | Amerigroup Florida | AMERIGROUP FL | 27519 | Y | N | Y | N |
| 98 | Amerigroup Illinois | AMERIGROUP IL | 27518 | Y | N | Y | N |
| 6394 | AmeriHealth Administrators | AmeriHealth Administrators | 54763 | Y | U | Y | Y |
| 100 | AmeriHealth HMO New Jersey and Delaware | AMERIHEALTH HMO | 23037 | Y | N | Y | Y |
| 101 | AmeriHealth Mercy Health Plan | AMERIHEALTH MERCY | 22248 | Y | N | Y | Y |
| 102 | Anchor Benefit Consulting Inc | ANCHOR | 53085 | Y | N | Y | Y |
| 202 | Antares Management Solutions | Antares | 34192 | Y | N | Y | N |
| 1154 | ANTHEM BLUE KY ACCESS PRODUCTS | ANTHEM ACCESS | 2421 | N | N | Y | Y |
| 1155 | ANTHEM BLUE KY PREFERRED | ANTHEM PREFERRED | 2421 | N | N | Y | Y |
| 1156 | ANTHEM BLUE KY PREFERRED PLUS | ANTHEM PREFERRED PLUS | 2421 | N | N | Y | Y |