| Nurse practitioner | 86 |
| Internal medicine | 33 |
| Physical therapist (private practice) | 25 |
| Family practice | 24 |
| Certified Registered Nurse Anesthetist (CRNA) | 19 |
| Emergency medicine | 15 |
| Physician assistant | 13 |
| Mass Immunization Roster Billers | 13 |
| Chiropractic | 12 |
| Speech / language pathology | 10 |
| Optometrist | 9 |
| Obstetrics/gynecology | 8 |
| Clinical psychologist | 8 |
| Occupational therapist (private practice) | 7 |
| Anesthesiology | 7 |
| Orthopedic surgery | 6 |
| Diagnostic Radiology | 6 |
| General surgery | 6 |
| Cardiology | 5 |
| Audiologist (billing independently) | 5 |
| Dermatology | 5 |
| Nephrology | 4 |
| Centralized Flu | 4 |
| Ophthalmology | 4 |
| Pharmacy | 4 |
| Psychiatry | 4 |
| Rheumatology | 4 |
| Mental Health Counselors | 3 |
| Anesthesiologist Assistant | 3 |
| Otolaryngology | 3 |
| Pathology | 3 |
| Urology | 3 |
| Gastroenterology | 3 |
| Neurology | 3 |
| Pediatric medicine | 2 |
| Radiation oncology | 2 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 2 |
| Gynecologist/oncologist | 1 |
| Endocrinology | 1 |
| Hematology/oncology | 1 |
| Critical care (intensivists) | 1 |
| Interventional Pain Management (IPM) | 1 |
| Osteopathic manipulative therapy | 1 |
| Podiatry | 1 |
| Sleep Medicine | 1 |
| Infectious disease | 1 |
| Interventional radiology | 1 |
| Interventional Cardiology | 1 |
| Cardiac Electrophysiology | 1 |
| Physical medicine and rehabilitation | 1 |
| Ambulatory Surgical Center | 1 |
| Clinical Laboratory (Billing Independently) | 1 |
| Vascular surgery | 1 |
| Geriatric medicine | 1 |
| Allergy/immunology | 1 |
| Licensed clinical social worker | 1 |
| Thoracic surgery | 1 |