| Nurse practitioner | 71 |
| Physician assistant | 36 |
| Certified Registered Nurse Anesthetist (CRNA) | 26 |
| Family practice | 26 |
| Internal medicine | 22 |
| Physical therapist (private practice) | 19 |
| Emergency medicine | 15 |
| General surgery | 10 |
| Mass Immunization Roster Billers | 10 |
| Licensed clinical social worker | 7 |
| Cardiology | 7 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 7 |
| General practice | 6 |
| Psychiatry | 6 |
| Obstetrics/gynecology | 6 |
| Anesthesiology | 5 |
| Optometrist | 5 |
| Orthopedic surgery | 5 |
| Clinical psychologist | 5 |
| Diagnostic Radiology | 4 |
| Mental Health Counselors | 4 |
| Neurology | 3 |
| Pediatric medicine | 3 |
| Psychologist (billing independently) | 3 |
| Centralized Flu | 3 |
| Ophthalmology | 3 |
| Hematology/oncology | 3 |
| Chiropractic | 3 |
| Infectious disease | 3 |
| Podiatry | 2 |
| Pathology | 2 |
| Pulmonary disease | 2 |
| Gastroenterology | 2 |
| Otolaryngology | 2 |
| Urology | 2 |
| Vascular surgery | 2 |
| Nephrology | 1 |
| Interventional Pain Management (IPM) | 1 |
| Interventional Cardiology | 1 |
| Allergy/immunology | 1 |
| Speech / language pathology | 1 |
| Independent Diagnostic Testing Facility (IDTF) | 1 |
| Occupational therapist (private practice) | 1 |
| Audiologist (billing independently) | 1 |
| Opioid Treatment Program | 1 |
| Endocrinology | 1 |
| Home Infusion Therapy Services | 1 |
| Registered Dietician/Nutrition Professional | 1 |
| Radiation oncology | 1 |