| Physician assistant | 59 |
| Nurse practitioner | 45 |
| Physical therapist (private practice) | 24 |
| Chiropractic | 24 |
| Family practice | 24 |
| Hospitalist | 22 |
| Anesthesiology | 20 |
| Emergency medicine | 18 |
| Internal medicine | 17 |
| Optometrist | 12 |
| Diagnostic Radiology | 9 |
| Orthopedic surgery | 8 |
| Pathology | 7 |
| Obstetrics/gynecology | 7 |
| Physical medicine and rehabilitation | 6 |
| Licensed clinical social worker | 6 |
| Occupational therapist (private practice) | 6 |
| Neurology | 6 |
| Clinical psychologist | 6 |
| Audiologist (billing independently) | 5 |
| Mental Health Counselors | 5 |
| Ophthalmology | 5 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 4 |
| Gastroenterology | 4 |
| Dermatology | 4 |
| General surgery | 4 |
| Pediatric medicine | 3 |
| Marriage and Family Therapist | 3 |
| Urology | 3 |
| Hospice and Palliative Care | 3 |
| Podiatry | 3 |
| Infectious disease | 2 |
| Interventional Cardiology | 2 |
| Radiation oncology | 2 |
| Endocrinology | 2 |
| Cardiac Electrophysiology | 2 |
| Psychiatry | 2 |
| Centralized Flu | 2 |
| Hand surgery | 2 |
| Plastic and reconstructive surgery | 2 |
| General practice | 2 |
| Interventional radiology | 2 |
| Mass Immunization Roster Billers | 2 |
| Pulmonary disease | 2 |
| Vascular surgery | 1 |
| Advanced Heart Failure and Transplant Cardiology | 1 |
| Certified nurse midwife | 1 |
| Thoracic surgery | 1 |
| Nephrology | 1 |
| Geriatric medicine | 1 |
| Cardiac surgery | 1 |
| Rheumatology | 1 |
| Sleep Medicine | 1 |
| Micrographic Dermatologic Surgery | 1 |
| Otolaryngology | 1 |
| Cardiology | 1 |