| General practice | 95 |
| Clinical Laboratory (Billing Independently) | 49 |
| Internal medicine | 27 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 14 |
| Physical therapist (private practice) | 13 |
| Diagnostic Radiology | 9 |
| Clinical psychologist | 8 |
| Obstetrics/gynecology | 7 |
| Family practice | 7 |
| Cardiology | 7 |
| Gastroenterology | 6 |
| General surgery | 6 |
| Ophthalmology | 6 |
| Physical medicine and rehabilitation | 4 |
| Rheumatology | 4 |
| Optometrist | 4 |
| Chiropractic | 4 |
| Neurology | 4 |
| Centralized Flu | 3 |
| Urology | 3 |
| Licensed clinical social worker | 3 |
| Audiologist (billing independently) | 3 |
| Nephrology | 2 |
| Otolaryngology | 2 |
| Anesthesiology | 2 |
| Pulmonary disease | 2 |
| Infectious disease | 2 |
| Orthopedic surgery | 2 |
| Hematology/oncology | 2 |
| Podiatry | 2 |
| Pathology | 2 |
| Interventional Cardiology | 1 |
| Critical care (intensivists) | 1 |
| Dermatology | 1 |
| Mass Immunization Roster Billers | 1 |
| Plastic and reconstructive surgery | 1 |
| Interventional Pain Management (IPM) | 1 |
| Geriatric medicine | 1 |
| Cardiac Electrophysiology | 1 |
| Psychiatry | 1 |
| Endocrinology | 1 |
| Independent Diagnostic Testing Facility (IDTF) | 1 |
| Ambulatory Surgical Center | 1 |
| Hematology | 1 |
| Emergency medicine | 1 |