| Business | Phone |
| Cosmi Corp Customer Svc 1351 Charles Willard St, Carson 90746 | (310) 603-5800 |
| Epo Technology Of America 20715 Avalon Blvd # 240, Carson 90746 | (310) 537-6883 |
| Physicians Office Computer 1250 E 223rd St # 116, Carson 90745 | (310) 233-7370 |
| Versyss Inc 740 E Watson Center Rd, Carson 90745 | (310) 835-6299 |