| Nurse practitioner | 147 |
| Physician assistant | 40 |
| Family practice | 38 |
| Certified Registered Nurse Anesthetist (CRNA) | 34 |
| Internal medicine | 31 |
| Physical therapist (private practice) | 21 |
| Emergency medicine | 20 |
| General surgery | 13 |
| Mental Health Counselors | 11 |
| Pharmacy | 11 |
| Anesthesiology | 11 |
| Obstetrics/gynecology | 11 |
| Licensed clinical social worker | 10 |
| Diagnostic Radiology | 10 |
| Optometrist | 10 |
| Psychiatry | 7 |
| Clinical psychologist | 7 |
| Mass Immunization Roster Billers | 7 |
| Orthopedic surgery | 7 |
| Gastroenterology | 6 |
| Chiropractic | 6 |
| Ophthalmology | 5 |
| Hematology/oncology | 5 |
| Cardiology | 5 |
| Nephrology | 5 |
| Otolaryngology | 4 |
| Occupational therapist (private practice) | 4 |
| Urology | 3 |
| Critical care (intensivists) | 3 |
| Neurology | 3 |
| Neurosurgery | 3 |
| Pulmonary disease | 3 |
| Rheumatology | 3 |
| Pediatric medicine | 3 |
| Audiologist (billing independently) | 2 |
| Podiatry | 2 |
| Interventional radiology | 2 |
| Centralized Flu | 2 |
| Dermatology | 2 |
| Thoracic surgery | 2 |
| Ambulatory Surgical Center | 2 |
| Endocrinology | 2 |
| Radiation oncology | 1 |
| Interventional Cardiology | 1 |
| Hospice and Palliative Care | 1 |
| Pathology | 1 |
| Hospitalist | 1 |
| Infectious disease | 1 |
| Pain Management | 1 |
| Oral surgery (dentists only) | 1 |
| Cardiac surgery | 1 |
| Registered Dietician/Nutrition Professional | 1 |
| Physical medicine and rehabilitation | 1 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 1 |
| Independent Diagnostic Testing Facility (IDTF) | 1 |
| Clinical Laboratory (Billing Independently) | 1 |
| Speech / language pathology | 1 |