| Nurse practitioner | 333 |
| Certified Registered Nurse Anesthetist (CRNA) | 84 |
| Internal medicine | 64 |
| Physical therapist (private practice) | 59 |
| Physician assistant | 54 |
| Licensed clinical social worker | 51 |
| Family practice | 46 |
| Emergency medicine | 41 |
| Chiropractic | 33 |
| Optometrist | 24 |
| Obstetrics/gynecology | 24 |
| Orthopedic surgery | 22 |
| General surgery | 19 |
| Occupational therapist (private practice) | 18 |
| Mental Health Counselors | 18 |
| Anesthesiology | 17 |
| Diagnostic Radiology | 17 |
| Cardiology | 17 |
| Mass Immunization Roster Billers | 17 |
| Ophthalmology | 13 |
| Otolaryngology | 13 |
| Hospitalist | 10 |
| Urology | 10 |
| Podiatry | 8 |
| Neurology | 8 |
| Dermatology | 8 |
| Pharmacy | 7 |
| Pathology | 7 |
| Clinical psychologist | 7 |
| Gastroenterology | 7 |
| Psychiatry | 6 |
| Pediatric medicine | 6 |
| Nephrology | 6 |
| Pulmonary disease | 6 |
| Centralized Flu | 5 |
| Audiologist (billing independently) | 5 |
| Hematology/oncology | 5 |
| Speech / language pathology | 5 |
| Pain Management | 4 |
| Ambulatory Surgical Center | 4 |
| Medical oncology | 4 |
| Plastic and reconstructive surgery | 4 |
| Neurosurgery | 4 |
| Rheumatology | 3 |
| General practice | 3 |
| Infectious disease | 3 |
| Thoracic surgery | 3 |
| Vascular surgery | 3 |
| Radiation oncology | 3 |
| Allergy/immunology | 2 |
| Independent Diagnostic Testing Facility (IDTF) | 2 |
| Marriage and Family Therapist | 2 |
| Endocrinology | 2 |
| Colorectal surgery (formerly proctology) | 2 |
| Registered Dietician/Nutrition Professional | 2 |
| Interventional radiology | 1 |
| Geriatric medicine | 1 |
| Opioid Treatment Program | 1 |
| Sleep Medicine | 1 |
| Medical Toxicology | 1 |
| Physical medicine and rehabilitation | 1 |
| Advanced Heart Failure and Transplant Cardiology | 1 |
| Interventional Pain Management (IPM) | 1 |
| Gynecologist/oncologist | 1 |
| Micrographic Dermatologic Surgery | 1 |
| Cardiac surgery | 1 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 1 |
| Critical care (intensivists) | 1 |