| Family practice | 11 |
| Nurse practitioner | 8 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 7 |
| Internal medicine | 7 |
| Physician assistant | 6 |
| Nephrology | 3 |
| General surgery | 2 |
| Diagnostic Radiology | 2 |
| Psychiatry | 2 |
| Mass Immunization Roster Billers | 2 |
| Certified Registered Nurse Anesthetist (CRNA) | 2 |
| Obstetrics/gynecology | 2 |
| Physical therapist (private practice) | 2 |
| Emergency medicine | 1 |
| Optometrist | 1 |
| Interventional Cardiology | 1 |
| Urology | 1 |
| Mental Health Counselors | 1 |
| Endocrinology | 1 |
| Licensed clinical social worker | 1 |
| Clinical Laboratory (Billing Independently) | 1 |
| Podiatry | 1 |