| Nurse practitioner | 117 |
| Physician assistant | 91 |
| Certified Registered Nurse Anesthetist (CRNA) | 49 |
| Physical therapist (private practice) | 34 |
| Licensed clinical social worker | 24 |
| Internal medicine | 23 |
| Family practice | 23 |
| Emergency medicine | 21 |
| Hospitalist | 18 |
| Anesthesiology | 13 |
| Optometrist | 11 |
| Obstetrics/gynecology | 10 |
| Psychiatry | 9 |
| Orthopedic surgery | 9 |
| Mass Immunization Roster Billers | 9 |
| Neurology | 8 |
| Ophthalmology | 7 |
| Pathology | 7 |
| Mental Health Counselors | 7 |
| Diagnostic Radiology | 7 |
| Podiatry | 5 |
| Dermatology | 5 |
| General surgery | 5 |
| Gastroenterology | 5 |
| Hematology/oncology | 5 |
| Chiropractic | 5 |
| Clinical psychologist | 5 |
| Vascular surgery | 4 |
| Otolaryngology | 4 |
| Infectious disease | 4 |
| Urology | 4 |
| Critical care (intensivists) | 4 |
| Pulmonary disease | 3 |
| Registered Dietician/Nutrition Professional | 3 |
| Speech / language pathology | 3 |
| Endocrinology | 3 |
| Cardiology | 3 |
| Nephrology | 3 |
| Ambulatory Surgical Center | 2 |
| Interventional Pain Management (IPM) | 2 |
| Rheumatology | 2 |
| Radiation oncology | 2 |
| Cardiac surgery | 2 |
| Audiologist (billing independently) | 2 |
| Interventional Cardiology | 2 |
| Centralized Flu | 2 |
| Thoracic surgery | 1 |
| Maxillofacial surgery | 1 |
| Micrographic Dermatologic Surgery | 1 |
| Certified nurse midwife | 1 |
| Clinical Laboratory (Billing Independently) | 1 |
| Marriage and Family Therapist | 1 |
| Pharmacy | 1 |
| Pain Management | 1 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 1 |
| Certified clinical nurse specialist | 1 |
| Independent Diagnostic Testing Facility (IDTF) | 1 |
| Oral surgery (dentists only) | 1 |
| Gynecologist/oncologist | 1 |
| Neurosurgery | 1 |
| Opioid Treatment Program | 1 |