| Nurse practitioner | 93 |
| Family practice | 60 |
| Internal medicine | 40 |
| Physician assistant | 38 |
| Certified Registered Nurse Anesthetist (CRNA) | 31 |
| Emergency medicine | 29 |
| Physical therapist (private practice) | 23 |
| Mass Immunization Roster Billers | 22 |
| Licensed clinical social worker | 20 |
| Optometrist | 17 |
| Psychiatry | 15 |
| Cardiology | 15 |
| Obstetrics/gynecology | 14 |
| Clinical psychologist | 14 |
| General surgery | 13 |
| Anesthesiology | 13 |
| Diagnostic Radiology | 11 |
| Chiropractic | 10 |
| Critical care (intensivists) | 10 |
| Hospitalist | 10 |
| Ophthalmology | 8 |
| Physical medicine and rehabilitation | 8 |
| Marriage and Family Therapist | 8 |
| Orthopedic surgery | 7 |
| Urology | 6 |
| Pathology | 5 |
| Hematology/oncology | 5 |
| Centralized Flu | 5 |
| Gastroenterology | 5 |
| General practice | 5 |
| Otolaryngology | 5 |
| Nephrology | 5 |
| Dermatology | 4 |
| Vascular surgery | 4 |
| Podiatry | 4 |
| Pharmacy | 3 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 3 |
| Ambulatory Surgical Center | 3 |
| Occupational therapist (private practice) | 3 |
| Pain Management | 3 |
| Registered Dietician/Nutrition Professional | 3 |
| Neurosurgery | 3 |
| Plastic and reconstructive surgery | 2 |
| Sleep Medicine | 2 |
| Osteopathic manipulative therapy | 2 |
| Pediatric medicine | 2 |
| Audiologist (billing independently) | 2 |
| Radiation oncology | 2 |
| Rheumatology | 2 |
| Neurology | 2 |
| Pulmonary disease | 1 |
| Thoracic surgery | 1 |
| Hospice and Palliative Care | 1 |
| Cardiac surgery | 1 |
| Opioid Treatment Program | 1 |
| Certified nurse midwife | 1 |
| Infectious disease | 1 |
| Unknown physician specialty | 1 |
| Mental Health Counselors | 1 |