| Business | Phone |
| A A Bancard Svc 9373 Activity Rd # B, San Diego 92126 | (858) 586-7940 |
| A A Card Acceptance Corp 9393 Activity Rd, San Diego 92126 | (858) 530-1770 |
| Bank Of America Merchant Svc San Diego 92128 | (858) 487-8636 |
| Card Establishment Svc San Diego 92108 | (619) 220-8441 |
| Card Service Of San Diego 4440 Rainier Ave, San Diego 92120 | (619) 281-8100 |
| Commerce Payment Systems 3435 Camino Del Rio S, San Diego 92108 | (619) 282-2227 |
| Heartland Payment Systems 7676 Hazard Center Dr, San Diego 92108 | (619) 497-2652 |
| Trinity Merchant Svc 2605 Camino Del Rio S, San Diego 92108 | (619) 688-7808 |
| United Merchant Svc San Diego 92108 | (619) 574-1857 |
| Usa Processing 3444 Camino Del Rio N, San Diego 92108 | (619) 243-7000 |
| A Merchant Svc Co 9320 Chesapeake Dr # 212, San Diego 92123 | (858) 268-0707 |
| Acer Business Group 8383 Clairemont Mesa Blvd, San Diego 92111 | (858) 279-2700 |
| Advant Card Solutions San Diego 92121 | (858) 452-8491 |
| Advantage Processing Network 650 Robinson Ave, San Diego 92103 | (858) 693-0099 |
| Semtek Inc 4217 Ponderosa Ave, San Diego 92123 | (858) 278-6003 |
| Right Bank Card Financial Svc 10464 Clairemont Mesa Blvd#120, San Diego 92124 | (619) 420-7370 |
| Retriever Of North America Po Box 23126, San Diego 92193 | (858) 541-7030 |
| Payment Processing Direct 13344 Pantera Rd, San Diego 92130 | (858) 453-9595 |
| National Data Funding Corp 8333 Clairemont Mesa Blvd, San Diego 92111 | (858) 565-9244 |
| Firstline Merchant Svc San Diego 92124 | (858) 715-0110 |
| Merchants Choice Card Svc 9393 Activity Rd # D, San Diego 92126 | (858) 530-1774 |
| Tx System 6242 Ferris Sq, San Diego 92121 | (858) 622-2004 |