| Business | Phone |
| B G Medical Billing Mgmt Svc 2841 Brendan Ave, Baltimore 21213 | (410) 483-0300 |
| Billing Network 6715 Park Heights Ave, Baltimore 21215 | (410) 318-6730 |
| Billing Unlimited Corp Baltimore 21212 | (410) 557-3770 |
| Physician Support Svc 300 E Joppa Rd, Baltimore 21286 | (410) 828-8100 |
| Physician's Choice 1107 Kenilworth Dr # 210, Baltimore 21204 | (410) 296-1880 |
| Rci Patient Accounting 9524 Belair Rd, Baltimore 21236 | (410) 529-4100 |
| Johns Hopkins Health System 4940 Eastern Ave, Baltimore 21224 | (410) 550-2900 |
| Med Help Inc 343 N Calvert St, Baltimore 21202 | (410) 659-6700 |
| Pmj & Assoc Medical Billing 3400 Eastern Ave, Baltimore 21224 | (410) 276-8800 |
| Pmj Medical Billing 3400 Eastern Ave, Baltimore 21224 | (410) 276-8700 |
| Quality Services Inc 3508 Chestnut Ave, Baltimore 21211 | (410) 366-7658 |
| Belmont Associates Inc 23 Fontana Ln # 111, Baltimore 21237 | (410) 780-0100 |
| Sinai Billing Office 5101 Lanier Ave, Baltimore 21215 | (410) 601-6890 |
| Ted Assoc 7209 Woodrow Ave, Baltimore 21224 | (410) 288-4245 |
| Grantly Payne & Assoc 6980 Tudsbury Rd, Baltimore 21244 | (410) 683-0335 |
| Winmars Corp 4412 Darleigh Rd, Baltimore 21236 | (410) 256-9050 |