| Physician assistant | 102 |
| Nurse practitioner | 66 |
| Licensed clinical social worker | 49 |
| Family practice | 42 |
| Certified Registered Nurse Anesthetist (CRNA) | 32 |
| Mental Health Counselors | 24 |
| Emergency medicine | 23 |
| Internal medicine | 21 |
| Physical therapist (private practice) | 21 |
| Chiropractic | 17 |
| Anesthesiology | 15 |
| Obstetrics/gynecology | 14 |
| Psychiatry | 12 |
| Diagnostic Radiology | 12 |
| Mass Immunization Roster Billers | 10 |
| Clinical psychologist | 10 |
| Orthopedic surgery | 10 |
| Hospitalist | 9 |
| Cardiology | 8 |
| Optometrist | 8 |
| Gastroenterology | 7 |
| General surgery | 7 |
| Pathology | 6 |
| Osteopathic manipulative therapy | 5 |
| Physical medicine and rehabilitation | 5 |
| Audiologist (billing independently) | 5 |
| Ophthalmology | 5 |
| Occupational therapist (private practice) | 5 |
| Centralized Flu | 5 |
| Podiatry | 5 |
| Thoracic surgery | 4 |
| Neurosurgery | 4 |
| Certified nurse midwife | 4 |
| Plastic and reconstructive surgery | 4 |
| Radiation oncology | 4 |
| Hematology/oncology | 3 |
| Urology | 3 |
| Otolaryngology | 3 |
| Vascular surgery | 3 |
| Neurology | 3 |
| Nephrology | 3 |
| Infectious disease | 3 |
| Pediatric medicine | 2 |
| General practice | 2 |
| Allergy/immunology | 2 |
| Ambulatory Surgical Center | 2 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 2 |
| Pulmonary disease | 2 |
| Opioid Treatment Program | 2 |
| Medical oncology | 2 |
| Interventional radiology | 1 |
| Registered Dietician/Nutrition Professional | 1 |
| Addiction medicine | 1 |
| Geriatric medicine | 1 |
| Cardiac Electrophysiology | 1 |
| Sleep Medicine | 1 |
| Interventional Cardiology | 1 |
| Dermatology | 1 |
| Endocrinology | 1 |
| Sports Medicine | 1 |