| Nurse practitioner | 202 |
| Physician assistant | 106 |
| Certified Registered Nurse Anesthetist (CRNA) | 99 |
| Internal medicine | 81 |
| Family practice | 60 |
| Physical therapist (private practice) | 34 |
| Anesthesiology | 31 |
| General surgery | 25 |
| Emergency medicine | 24 |
| Diagnostic Radiology | 22 |
| Obstetrics/gynecology | 18 |
| Optometrist | 18 |
| Chiropractic | 16 |
| Psychiatry | 16 |
| Hospitalist | 15 |
| Mass Immunization Roster Billers | 14 |
| Neurology | 12 |
| Mental Health Counselors | 12 |
| Pulmonary disease | 11 |
| Ophthalmology | 11 |
| Gastroenterology | 11 |
| Podiatry | 10 |
| Cardiology | 9 |
| Critical care (intensivists) | 9 |
| Orthopedic surgery | 9 |
| Occupational therapist (private practice) | 8 |
| Pathology | 8 |
| Licensed clinical social worker | 8 |
| Nephrology | 7 |
| Hematology/oncology | 7 |
| Endocrinology | 6 |
| Neurosurgery | 6 |
| Clinical psychologist | 6 |
| Otolaryngology | 6 |
| Interventional Cardiology | 6 |
| Urology | 6 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 6 |
| Infectious disease | 6 |
| Centralized Flu | 6 |
| Physical medicine and rehabilitation | 5 |
| Vascular surgery | 5 |
| Dermatology | 5 |
| Rheumatology | 5 |
| Plastic and reconstructive surgery | 5 |
| Pediatric medicine | 5 |
| Thoracic surgery | 4 |
| Cardiac surgery | 3 |
| Cardiac Electrophysiology | 3 |
| Maxillofacial surgery | 3 |
| Audiologist (billing independently) | 3 |
| Allergy/immunology | 3 |
| Pain Management | 2 |
| Radiation oncology | 2 |
| Gynecologist/oncologist | 2 |
| Interventional radiology | 2 |
| Speech / language pathology | 2 |
| Medical oncology | 2 |
| Anesthesiologist Assistant | 1 |
| Unknown Provider | 1 |
| General practice | 1 |
| Surgical oncology | 1 |
| Registered Dietician/Nutrition Professional | 1 |
| Interventional Pain Management (IPM) | 1 |
| Neuropsychiatry | 1 |
| Unknown physician specialty | 1 |
| Independent Diagnostic Testing Facility (IDTF) | 1 |
| Addiction medicine | 1 |
| Hospice and Palliative Care | 1 |