| Advanced Billing Services, Inc. |
1 |
| AMAC |
4 |
| Argus Medical Management, LLC |
29 |
| GroupOne Health Source |
13 |
| HealthPro Medical Billing |
1 |
| J&S Stark Billing & Consulting, Inc. |
2 |
| Keystone Medical Billing Services |
2 |
| MBMS - Medical Billing and Management Services |
11 |
| Symed Corporation |
2 |
| Vantage Radiology |
2 |
