| Nurse practitioner | 246 |
| Internal medicine | 114 |
| Certified Registered Nurse Anesthetist (CRNA) | 96 |
| Physician assistant | 85 |
| Physical therapist (private practice) | 52 |
| Emergency medicine | 45 |
| Family practice | 45 |
| Anesthesiology | 42 |
| Obstetrics/gynecology | 34 |
| Orthopedic surgery | 30 |
| Psychiatry | 24 |
| Mass Immunization Roster Billers | 23 |
| Chiropractic | 20 |
| Pulmonary disease | 20 |
| Gastroenterology | 19 |
| Occupational therapist (private practice) | 19 |
| General surgery | 19 |
| Cardiology | 18 |
| Ophthalmology | 18 |
| Hospitalist | 18 |
| Neurology | 16 |
| Nephrology | 16 |
| Centralized Flu | 16 |
| Optometrist | 15 |
| Diagnostic Radiology | 15 |
| Licensed clinical social worker | 13 |
| Otolaryngology | 12 |
| Urology | 12 |
| Mental Health Counselors | 11 |
| Clinical psychologist | 9 |
| Pediatric medicine | 8 |
| Pathology | 8 |
| Rheumatology | 7 |
| Thoracic surgery | 7 |
| Speech / language pathology | 6 |
| Physical medicine and rehabilitation | 6 |
| Hematology/oncology | 6 |
| Infectious disease | 6 |
| Audiologist (billing independently) | 6 |
| Plastic and reconstructive surgery | 6 |
| Interventional Cardiology | 5 |
| Dermatology | 5 |
| Pharmacy | 5 |
| Neurosurgery | 5 |
| Podiatry | 4 |
| Vascular surgery | 4 |
| Surgical oncology | 4 |
| Critical care (intensivists) | 4 |
| Clinical Laboratory (Billing Independently) | 4 |
| Radiation oncology | 4 |
| Cardiac surgery | 3 |
| Anesthesiologist Assistant | 3 |
| Interventional radiology | 3 |
| General practice | 3 |
| Endocrinology | 3 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 3 |
| All other suppliers, e.g., Drug Stores | 2 |
| Opioid Treatment Program | 2 |
| Ambulatory Surgical Center | 2 |
| Registered Dietician/Nutrition Professional | 2 |
| Hand surgery | 2 |
| Medical oncology | 2 |
| Unknown Provider | 1 |
| Advanced Heart Failure and Transplant Cardiology | 1 |
| Nuclear medicine | 1 |
| Cardiac Electrophysiology | 1 |
| Sports Medicine | 1 |
| Maxillofacial surgery | 1 |
| Gynecologist/oncologist | 1 |
| Colorectal surgery (formerly proctology) | 1 |
| Independent Diagnostic Testing Facility (IDTF) | 1 |