| Nurse practitioner | 227 |
| Family practice | 75 |
| Physician assistant | 56 |
| Internal medicine | 51 |
| Certified Registered Nurse Anesthetist (CRNA) | 48 |
| Physical therapist (private practice) | 33 |
| Diagnostic Radiology | 24 |
| Obstetrics/gynecology | 21 |
| Mass Immunization Roster Billers | 21 |
| Emergency medicine | 19 |
| Optometrist | 18 |
| General surgery | 17 |
| Anesthesiology | 15 |
| Chiropractic | 14 |
| Licensed clinical social worker | 12 |
| Orthopedic surgery | 11 |
| Mental Health Counselors | 10 |
| Cardiology | 10 |
| Gastroenterology | 9 |
| Centralized Flu | 9 |
| Ophthalmology | 8 |
| Hospitalist | 8 |
| Ambulatory Surgical Center | 8 |
| Neurology | 7 |
| Pulmonary disease | 7 |
| Psychiatry | 7 |
| Audiologist (billing independently) | 6 |
| Infectious disease | 6 |
| Interventional Cardiology | 5 |
| Pediatric medicine | 5 |
| Urology | 5 |
| Hematology/oncology | 5 |
| Pathology | 5 |
| Otolaryngology | 5 |
| Dermatology | 4 |
| Rheumatology | 4 |
| Podiatry | 4 |
| Occupational therapist (private practice) | 4 |
| Certified nurse midwife | 3 |
| Marriage and Family Therapist | 3 |
| Nephrology | 3 |
| Clinical psychologist | 3 |
| Plastic and reconstructive surgery | 3 |
| Medical oncology | 2 |
| Neurosurgery | 2 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 2 |
| Critical care (intensivists) | 2 |
| Addiction medicine | 2 |
| Registered Dietician/Nutrition Professional | 2 |
| Endocrinology | 2 |
| Vascular surgery | 2 |
| Cardiac surgery | 1 |
| Clinical Laboratory (Billing Independently) | 1 |
| Psychologist (billing independently) | 1 |
| Interventional Pain Management (IPM) | 1 |
| General practice | 1 |
| Thoracic surgery | 1 |
| Pharmacy | 1 |