| Business | Phone |
| Medical Data Exchange 1 World Trade Ctr # 2400, Long Beach 90831 | (562) 432-4611 |
| First Medical Mgmt 2800 Pacific Ave, Long Beach 90806 | (562) 426-2417 |
| Advanced Medical Management 5000 Airport Plaza Dr, Long Beach 90815 | (562) 766-2000 |
| Turner Hughes Medical Billing 3240 E 68th Way, Long Beach 90805 | (562) 529-7855 |