| Physical therapist (private practice) | 131 |
| Nurse practitioner | 122 |
| Physician assistant | 109 |
| Family practice | 74 |
| Internal medicine | 64 |
| Emergency medicine | 62 |
| Chiropractic | 57 |
| Optometrist | 40 |
| Clinical psychologist | 40 |
| Anesthesiology | 39 |
| Licensed clinical social worker | 36 |
| Psychiatry | 27 |
| Marriage and Family Therapist | 27 |
| Diagnostic Radiology | 27 |
| Mass Immunization Roster Billers | 27 |
| Ophthalmology | 26 |
| Obstetrics/gynecology | 26 |
| Orthopedic surgery | 24 |
| Podiatry | 15 |
| Ambulatory Surgical Center | 15 |
| Hospitalist | 14 |
| Dermatology | 14 |
| General surgery | 13 |
| Occupational therapist (private practice) | 11 |
| Certified Registered Nurse Anesthetist (CRNA) | 11 |
| Gastroenterology | 10 |
| Neurology | 9 |
| Registered Dietician/Nutrition Professional | 9 |
| Pathology | 9 |
| Speech / language pathology | 9 |
| Cardiology | 8 |
| Urology | 8 |
| Otolaryngology | 8 |
| Hematology/oncology | 8 |
| Physical medicine and rehabilitation | 8 |
| Pulmonary disease | 7 |
| Neurosurgery | 6 |
| Rheumatology | 6 |
| Independent Diagnostic Testing Facility (IDTF) | 5 |
| Mental Health Counselors | 5 |
| General practice | 5 |
| Allergy/immunology | 5 |
| Audiologist (billing independently) | 4 |
| Radiation oncology | 4 |
| Infectious disease | 4 |
| Interventional Cardiology | 4 |
| Clinical Laboratory (Billing Independently) | 4 |
| Certified nurse midwife | 3 |
| Endocrinology | 3 |
| Plastic and reconstructive surgery | 3 |
| Pharmacy | 3 |
| Interventional radiology | 3 |
| Thoracic surgery | 3 |
| Preventive medicine | 2 |
| Critical care (intensivists) | 2 |
| Centralized Flu | 2 |
| Osteopathic manipulative therapy | 2 |
| Nephrology | 2 |
| Psychologist (billing independently) | 2 |
| Hand surgery | 2 |
| Medical oncology | 2 |
| Pediatric medicine | 2 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 2 |
| Gynecologist/oncologist | 1 |
| Pain Management | 1 |
| Interventional Pain Management (IPM) | 1 |
| Vascular surgery | 1 |
| Opioid Treatment Program | 1 |
| Portable X-Ray Supplier (Billing Independently) | 1 |
| Cardiac surgery | 1 |