| 1 Point Solutions | TFQ32 | No | | | | | X | | | |
| 1199 National Benefit Fund | 13162 | No | | X | X | | | | | |
| 1199 National Benefit Fund | TLU12 | No | | | | | X | | | |
| 21st Century Health & Benefits, Inc. | TLX89 | No | | | | | X | | | |
| A & I Benefit Plan Administrators | CX044 | No | | | | | X | | | |
| A & I Benefit Plan Administrators | 93044 | No | | X | X | | | | | |
| AARP | AARP | No | | | | | | X | | |
| AARP (Enhanced) | CE051 | No | | | | | | X | | |
| AARP Dental Insurance Plan | AARP1 | No | | | | | X | | | |
| AARP, VA | 36273 | Yes | http://www.claimremedi.com/enrollment/United Healthcare Group 835.xls | X | X | X | | | | Enrollment applies to ERA only -- not necessary prior to claim submission. |
| ABC Health Plan of New York | 48185 | No | | X | X | | | | | |
| ABMA Medical Corp. (Hnet Sr. & Secure Horizons ONLY) | E3510 | No | | X | | | | | | Only claims from providers in Northern Calif. Please contact the EDI Dept for North American Medical Management (NAMM) Lead/Supervisor at 800-956-8000 prior to initial submission of claims. |
| Abrazo Advantage Health Plan | 03443 | No | | X | | | | | | |
| Abrazo Healthcare - Phoenix, Arizona | PHP01 | No | | | | | X | | | |
| Abri Health Plan | AHP01 | No | | | | | X | | | |