| Nurse practitioner | 110 |
| Physician assistant | 68 |
| Family practice | 58 |
| Certified Registered Nurse Anesthetist (CRNA) | 36 |
| Internal medicine | 33 |
| Physical therapist (private practice) | 32 |
| Emergency medicine | 30 |
| Chiropractic | 23 |
| Mental Health Counselors | 18 |
| Optometrist | 18 |
| Obstetrics/gynecology | 16 |
| Mass Immunization Roster Billers | 14 |
| Cardiology | 12 |
| Licensed clinical social worker | 10 |
| Pediatric medicine | 9 |
| Orthopedic surgery | 9 |
| Psychiatry | 9 |
| General surgery | 9 |
| Diagnostic Radiology | 7 |
| Clinical Laboratory (Billing Independently) | 6 |
| Anesthesiology | 6 |
| Gastroenterology | 6 |
| Critical care (intensivists) | 6 |
| Clinical psychologist | 5 |
| Otolaryngology | 5 |
| Infectious disease | 5 |
| Urology | 5 |
| Audiologist (billing independently) | 5 |
| Occupational therapist (private practice) | 4 |
| Hospitalist | 4 |
| Podiatry | 4 |
| Neurology | 4 |
| Ambulatory Surgical Center | 4 |
| Centralized Flu | 3 |
| Nephrology | 3 |
| Hematology/oncology | 3 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 3 |
| Ophthalmology | 3 |
| Interventional Cardiology | 3 |
| Pulmonary disease | 3 |
| Physical medicine and rehabilitation | 3 |
| Speech / language pathology | 2 |
| Interventional Pain Management (IPM) | 2 |
| Dermatology | 2 |
| Radiation oncology | 2 |
| Neurosurgery | 2 |
| Certified nurse midwife | 2 |
| Registered Dietician/Nutrition Professional | 2 |
| Vascular surgery | 2 |
| Plastic and reconstructive surgery | 1 |
| Pharmacy | 1 |
| Preventive medicine | 1 |
| Pathology | 1 |
| Rheumatology | 1 |
| Medical oncology | 1 |
| Medical Genetics and Genomics | 1 |
| Opioid Treatment Program | 1 |