| Nurse practitioner | 150 |
| Physician assistant | 140 |
| Internal medicine | 70 |
| Licensed clinical social worker | 51 |
| Family practice | 51 |
| Physical therapist (private practice) | 42 |
| Certified Registered Nurse Anesthetist (CRNA) | 36 |
| Emergency medicine | 35 |
| Obstetrics/gynecology | 34 |
| Mental Health Counselors | 31 |
| Mass Immunization Roster Billers | 24 |
| Diagnostic Radiology | 20 |
| Clinical psychologist | 19 |
| Anesthesiology | 16 |
| Hospitalist | 16 |
| General surgery | 15 |
| Psychiatry | 15 |
| Chiropractic | 15 |
| Optometrist | 14 |
| Neurology | 14 |
| Pediatric medicine | 12 |
| Podiatry | 11 |
| Orthopedic surgery | 10 |
| Ophthalmology | 10 |
| Cardiology | 10 |
| Physical medicine and rehabilitation | 9 |
| Gastroenterology | 7 |
| Nephrology | 6 |
| Hematology/oncology | 6 |
| Otolaryngology | 6 |
| Centralized Flu | 5 |
| Occupational therapist (private practice) | 5 |
| Pathology | 4 |
| Medical oncology | 4 |
| Registered Dietician/Nutrition Professional | 4 |
| Interventional Cardiology | 4 |
| Certified nurse midwife | 4 |
| Infectious disease | 4 |
| Pulmonary disease | 4 |
| Independent Diagnostic Testing Facility (IDTF) | 3 |
| Endocrinology | 3 |
| Critical care (intensivists) | 3 |
| Dermatology | 3 |
| Urology | 3 |
| Unknown Provider | 3 |
| Anesthesiologist Assistant | 3 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 2 |
| Audiologist (billing independently) | 2 |
| Radiation oncology | 2 |
| Vascular surgery | 2 |
| Clinical Laboratory (Billing Independently) | 2 |
| Osteopathic manipulative therapy | 2 |
| Neurosurgery | 2 |
| Opioid Treatment Program | 2 |
| Pharmacy | 2 |
| Geriatric medicine | 1 |
| Hospice and Palliative Care | 1 |
| Pain Management | 1 |
| Psychologist (billing independently) | 1 |
| Allergy/immunology | 1 |
| Peripheral vascular disease | 1 |
| Dentist | 1 |
| Speech / language pathology | 1 |
| General practice | 1 |
| Cardiac surgery | 1 |