| Business | Phone |
| Aegis Healthcare Business Sltn 10280 Old Columbia Rd # 240, Columbia 21046 | (410) 381-1611 |
| Healthcare Financial Inc 7304 Rocky Creek Dr, Columbia 21046 | (410) 309-0035 |
| Healthonline Inc 5575 Sterrett Pl, Columbia 21044 | (410) 423-4900 |
| Maryland Health Care 6470 Dobbin Rd # C, Columbia 21045 | (410) 209-6194 |
| Medstar Health 5565 Sterrett Pl # 5, Columbia 21044 | (410) 772-6500 |