| Nurse practitioner | 130 |
| Physician assistant | 46 |
| Certified Registered Nurse Anesthetist (CRNA) | 41 |
| Internal medicine | 33 |
| Mental Health Counselors | 20 |
| Family practice | 18 |
| Anesthesiology | 18 |
| Physical therapist (private practice) | 17 |
| Optometrist | 13 |
| Diagnostic Radiology | 12 |
| Emergency medicine | 12 |
| Obstetrics/gynecology | 11 |
| Ambulatory Surgical Center | 9 |
| Mass Immunization Roster Billers | 9 |
| General surgery | 8 |
| Orthopedic surgery | 8 |
| Podiatry | 7 |
| Psychiatry | 7 |
| Cardiology | 7 |
| Audiologist (billing independently) | 7 |
| Gastroenterology | 6 |
| Neurology | 6 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 6 |
| Marriage and Family Therapist | 6 |
| Urology | 5 |
| Neurosurgery | 5 |
| Endocrinology | 5 |
| Licensed clinical social worker | 5 |
| Nephrology | 5 |
| Hematology/oncology | 4 |
| Chiropractic | 4 |
| Clinical psychologist | 4 |
| Otolaryngology | 4 |
| Ophthalmology | 4 |
| Pediatric medicine | 4 |
| Pharmacy | 2 |
| Hospice and Palliative Care | 2 |
| Cardiac surgery | 2 |
| Rheumatology | 2 |
| Pathology | 2 |
| Pulmonary disease | 2 |
| Infectious disease | 2 |
| Interventional Cardiology | 2 |
| Cardiac Electrophysiology | 2 |
| Dermatology | 2 |
| Radiation oncology | 1 |
| Surgical oncology | 1 |
| Physical medicine and rehabilitation | 1 |
| Hand surgery | 1 |
| Registered Dietician/Nutrition Professional | 1 |
| Clinical Laboratory (Billing Independently) | 1 |
| Centralized Flu | 1 |
| Portable X-Ray Supplier (Billing Independently) | 1 |
| Interventional Pain Management (IPM) | 1 |
| Oral surgery (dentists only) | 1 |
| Certified clinical nurse specialist | 1 |
| Colorectal surgery (formerly proctology) | 1 |
| Interventional radiology | 1 |
| Allergy/immunology | 1 |
| Thoracic surgery | 1 |
| Plastic and reconstructive surgery | 1 |
| Independent Diagnostic Testing Facility (IDTF) | 1 |
| Certified nurse midwife | 1 |
| Pain Management | 1 |
| General practice | 1 |