| Nurse practitioner | 146 |
| Family practice | 54 |
| Certified Registered Nurse Anesthetist (CRNA) | 43 |
| Internal medicine | 43 |
| Licensed clinical social worker | 30 |
| Mass Immunization Roster Billers | 18 |
| Physician assistant | 17 |
| Physical therapist (private practice) | 15 |
| Diagnostic Radiology | 15 |
| Emergency medicine | 15 |
| Optometrist | 15 |
| Mental Health Counselors | 14 |
| Obstetrics/gynecology | 14 |
| Chiropractic | 10 |
| General surgery | 10 |
| Psychiatry | 8 |
| Clinical psychologist | 8 |
| Cardiology | 7 |
| Occupational therapist (private practice) | 7 |
| Orthopedic surgery | 7 |
| Otolaryngology | 6 |
| Hospitalist | 6 |
| Pathology | 6 |
| Neurology | 6 |
| Urology | 5 |
| Anesthesiology | 5 |
| Ambulatory Surgical Center | 5 |
| Rheumatology | 4 |
| Pulmonary disease | 4 |
| Certified clinical nurse specialist | 4 |
| Clinical Laboratory (Billing Independently) | 4 |
| Podiatry | 4 |
| Nephrology | 4 |
| Pharmacy | 4 |
| Radiation oncology | 3 |
| Audiologist (billing independently) | 3 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 3 |
| Infectious disease | 3 |
| Gastroenterology | 3 |
| Ophthalmology | 3 |
| Independent Diagnostic Testing Facility (IDTF) | 2 |
| Physical medicine and rehabilitation | 2 |
| Pain Management | 2 |
| Hematology/oncology | 2 |
| Cardiac Electrophysiology | 2 |
| Neurosurgery | 2 |
| Speech / language pathology | 2 |
| Interventional Cardiology | 2 |
| General practice | 2 |
| Vascular surgery | 2 |
| Dermatology | 1 |
| Centralized Flu | 1 |
| Hematology | 1 |
| General Psychiatry | 1 |
| Cardiac surgery | 1 |
| Registered Dietician/Nutrition Professional | 1 |
| Oral surgery (dentists only) | 1 |
| Portable X-Ray Supplier (Billing Independently) | 1 |
| Critical care (intensivists) | 1 |
| Thoracic surgery | 1 |
| Endocrinology | 1 |
| Home Infusion Therapy Services | 1 |