| Nurse practitioner | 214 |
| Internal medicine | 67 |
| Physician assistant | 66 |
| Certified Registered Nurse Anesthetist (CRNA) | 57 |
| Family practice | 57 |
| Physical therapist (private practice) | 44 |
| Optometrist | 25 |
| Emergency medicine | 20 |
| Orthopedic surgery | 18 |
| Mass Immunization Roster Billers | 17 |
| General surgery | 16 |
| Diagnostic Radiology | 15 |
| Licensed clinical social worker | 14 |
| Anesthesiology | 13 |
| Mental Health Counselors | 13 |
| Obstetrics/gynecology | 11 |
| Chiropractic | 11 |
| Psychiatry | 9 |
| Ophthalmology | 9 |
| Pathology | 8 |
| Audiologist (billing independently) | 8 |
| Podiatry | 7 |
| Cardiology | 7 |
| Dermatology | 6 |
| Pulmonary disease | 6 |
| Neurology | 6 |
| Infectious disease | 5 |
| Ambulatory Surgical Center | 5 |
| Pharmacy | 5 |
| Clinical psychologist | 5 |
| Pediatric medicine | 4 |
| Certified nurse midwife | 4 |
| Centralized Flu | 3 |
| Interventional Cardiology | 3 |
| Speech / language pathology | 3 |
| Occupational therapist (private practice) | 3 |
| Neurosurgery | 3 |
| Vascular surgery | 3 |
| Rheumatology | 3 |
| Endocrinology | 2 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 2 |
| Otolaryngology | 2 |
| Physical medicine and rehabilitation | 2 |
| Thoracic surgery | 2 |
| Critical care (intensivists) | 2 |
| Medical oncology | 2 |
| Plastic and reconstructive surgery | 2 |
| Nephrology | 2 |
| Registered Dietician/Nutrition Professional | 2 |
| General practice | 1 |
| Opioid Treatment Program | 1 |
| Cardiac Electrophysiology | 1 |
| Addiction medicine | 1 |
| Interventional radiology | 1 |
| Clinical Laboratory (Billing Independently) | 1 |
| Preventive medicine | 1 |
| Hematology/oncology | 1 |
| Radiation oncology | 1 |
| Gastroenterology | 1 |
| Psychologist (billing independently) | 1 |
| Urology | 1 |