| Nurse practitioner | 31 |
| Physician assistant | 23 |
| Internal medicine | 22 |
| Family practice | 17 |
| Physical therapist (private practice) | 15 |
| Chiropractic | 15 |
| Emergency medicine | 11 |
| Certified Registered Nurse Anesthetist (CRNA) | 11 |
| Licensed clinical social worker | 9 |
| Mental Health Counselors | 8 |
| Orthopedic surgery | 6 |
| Obstetrics/gynecology | 6 |
| Psychiatry | 6 |
| Optometrist | 5 |
| Ophthalmology | 5 |
| Anesthesiology | 5 |
| Occupational therapist (private practice) | 4 |
| Cardiology | 4 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 4 |
| Speech / language pathology | 3 |
| Diagnostic Radiology | 3 |
| Podiatry | 3 |
| Clinical psychologist | 3 |
| Hospitalist | 3 |
| General surgery | 3 |
| Dermatology | 2 |
| Radiation oncology | 2 |
| Nephrology | 2 |
| Registered Dietician/Nutrition Professional | 2 |
| Neurology | 2 |
| Gastroenterology | 2 |
| Mass Immunization Roster Billers | 2 |
| Interventional Cardiology | 2 |
| Otolaryngology | 2 |
| Pulmonary disease | 2 |
| Hematology | 1 |
| Marriage and Family Therapist | 1 |
| Audiologist (billing independently) | 1 |
| Pain Management | 1 |
| Urology | 1 |
| Hand surgery | 1 |
| Nuclear medicine | 1 |
| Centralized Flu | 1 |
| Opioid Treatment Program | 1 |
| Pediatric medicine | 1 |
| Certified nurse midwife | 1 |