| Nurse practitioner | 53 |
| Physician assistant | 36 |
| Family practice | 23 |
| Internal medicine | 16 |
| Chiropractic | 15 |
| Licensed clinical social worker | 14 |
| Physical therapist (private practice) | 13 |
| Emergency medicine | 10 |
| Mental Health Counselors | 8 |
| Optometrist | 6 |
| Anesthesiology | 5 |
| Orthopedic surgery | 4 |
| Diagnostic Radiology | 4 |
| Obstetrics/gynecology | 4 |
| Certified Registered Nurse Anesthetist (CRNA) | 4 |
| Clinical psychologist | 4 |
| Podiatry | 3 |
| Marriage and Family Therapist | 3 |
| Occupational therapist (private practice) | 3 |
| General practice | 3 |
| General surgery | 3 |
| Mass Immunization Roster Billers | 3 |
| Neurology | 2 |
| Cardiology | 2 |
| Ophthalmology | 2 |
| Unknown Provider | 2 |
| Otolaryngology | 2 |
| Radiation oncology | 1 |
| Certified nurse midwife | 1 |
| Thoracic surgery | 1 |
| Plastic and reconstructive surgery | 1 |
| Audiologist (billing independently) | 1 |
| Osteopathic manipulative therapy | 1 |
| Pharmacy | 1 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 1 |
| Critical care (intensivists) | 1 |
| Infectious disease | 1 |
| Colorectal surgery (formerly proctology) | 1 |