| Nurse practitioner | 54 |
| Physical therapist (private practice) | 28 |
| Physician assistant | 28 |
| Licensed clinical social worker | 25 |
| Family practice | 22 |
| Chiropractic | 19 |
| Certified Registered Nurse Anesthetist (CRNA) | 16 |
| Optometrist | 14 |
| Mass Immunization Roster Billers | 10 |
| Internal medicine | 9 |
| Clinical psychologist | 8 |
| Speech / language pathology | 8 |
| Emergency medicine | 6 |
| Obstetrics/gynecology | 6 |
| Audiologist (billing independently) | 5 |
| Mental Health Counselors | 5 |
| Diagnostic Radiology | 4 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 4 |
| Registered Dietician/Nutrition Professional | 4 |
| Orthopedic surgery | 4 |
| Marriage and Family Therapist | 4 |
| Pediatric medicine | 3 |
| Pharmacy | 3 |
| Hospitalist | 3 |
| Psychiatry | 3 |
| Neurology | 2 |
| General surgery | 2 |
| Ophthalmology | 2 |
| Occupational therapist (private practice) | 2 |
| Ambulatory Surgical Center | 2 |
| Urology | 2 |
| Gastroenterology | 2 |
| Cardiology | 2 |
| Pain Management | 1 |
| Otolaryngology | 1 |
| Dermatology | 1 |
| Physical medicine and rehabilitation | 1 |
| Clinical Laboratory (Billing Independently) | 1 |
| Anesthesiology | 1 |
| Oral surgery (dentists only) | 1 |
| Hematology/oncology | 1 |
| Dentist | 1 |
| Independent Diagnostic Testing Facility (IDTF) | 1 |
| Nephrology | 1 |
| Radiation oncology | 1 |
| General practice | 1 |
| Podiatry | 1 |