| AMAC |
1 |
| HealthPro Medical Billing |
3 |
| J&S Stark Billing & Consulting, Inc. |
1 |
| MBMS Medical Billing and Management Services |
27 |
| Med-Strategies, Inc. |
10 |
| Patient Account Services |
4 |
| The University of Michigan |
2 |
| Vantage Radiology |
2 |
| Whittier Medical Management Inc |
1 |
