| Nurse practitioner | 66 |
| Physician assistant | 52 |
| Family practice | 29 |
| Licensed clinical social worker | 27 |
| Physical therapist (private practice) | 18 |
| Internal medicine | 17 |
| Mass Immunization Roster Billers | 13 |
| Certified Registered Nurse Anesthetist (CRNA) | 13 |
| Mental Health Counselors | 13 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 12 |
| Emergency medicine | 10 |
| Optometrist | 10 |
| Diagnostic Radiology | 9 |
| Clinical psychologist | 9 |
| Cardiology | 8 |
| Chiropractic | 7 |
| Anesthesiology | 5 |
| Centralized Flu | 5 |
| Urology | 5 |
| Obstetrics/gynecology | 5 |
| General surgery | 5 |
| Certified nurse midwife | 4 |
| Occupational therapist (private practice) | 3 |
| Ophthalmology | 3 |
| Psychiatry | 3 |
| Podiatry | 3 |
| Gastroenterology | 3 |
| Hematology/oncology | 3 |
| Orthopedic surgery | 2 |
| Physical medicine and rehabilitation | 2 |
| Pediatric medicine | 2 |
| Pathology | 2 |
| Audiologist (billing independently) | 2 |
| Pulmonary disease | 2 |
| Vascular surgery | 2 |
| Otolaryngology | 2 |
| Neurology | 2 |
| Hospitalist | 2 |
| Pharmacy | 1 |
| Speech / language pathology | 1 |
| Marriage and Family Therapist | 1 |
| Registered Dietician/Nutrition Professional | 1 |
| Interventional Cardiology | 1 |
| Cardiac Electrophysiology | 1 |
| Hand surgery | 1 |
| Infectious disease | 1 |
| Sports Medicine | 1 |
| Dermatology | 1 |
| Critical care (intensivists) | 1 |
| Ambulatory Surgical Center | 1 |