| Nurse practitioner | 75 |
| Physician assistant | 40 |
| Physical therapist (private practice) | 24 |
| Internal medicine | 20 |
| Mental Health Counselors | 20 |
| Certified Registered Nurse Anesthetist (CRNA) | 19 |
| Family practice | 19 |
| Emergency medicine | 16 |
| Hospitalist | 14 |
| Optometrist | 14 |
| Mass Immunization Roster Billers | 10 |
| Licensed clinical social worker | 9 |
| Cardiology | 7 |
| Anesthesiology | 7 |
| Audiologist (billing independently) | 6 |
| Obstetrics/gynecology | 6 |
| Hematology/oncology | 5 |
| Chiropractic | 5 |
| Podiatry | 5 |
| General surgery | 5 |
| Diagnostic Radiology | 4 |
| Interventional Cardiology | 3 |
| Critical care (intensivists) | 3 |
| Neurosurgery | 3 |
| Speech / language pathology | 3 |
| Orthopedic surgery | 3 |
| Neurology | 3 |
| Pathology | 3 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 2 |
| Psychologist (billing independently) | 2 |
| Centralized Flu | 2 |
| Occupational therapist (private practice) | 2 |
| Radiation oncology | 2 |
| Psychiatry | 2 |
| Ambulatory Surgical Center | 2 |
| Rheumatology | 2 |
| Pulmonary disease | 2 |
| Ophthalmology | 2 |
| General practice | 1 |
| Urology | 1 |
| Gastroenterology | 1 |
| Nephrology | 1 |
| Pain Management | 1 |
| Dermatology | 1 |
| Cardiac Electrophysiology | 1 |
| Preventive medicine | 1 |
| Clinical Laboratory (Billing Independently) | 1 |
| Endocrinology | 1 |
| Pharmacy | 1 |
| Pediatric medicine | 1 |
| Infectious disease | 1 |
| Clinical psychologist | 1 |
| Vascular surgery | 1 |
| Allergy/immunology | 1 |