| Nurse practitioner | 66 |
| Family practice | 28 |
| Optometrist | 18 |
| Physical therapist (private practice) | 14 |
| Emergency medicine | 12 |
| Internal medicine | 12 |
| Physician assistant | 10 |
| Chiropractic | 10 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 9 |
| Certified Registered Nurse Anesthetist (CRNA) | 9 |
| Licensed clinical social worker | 9 |
| Mass Immunization Roster Billers | 8 |
| Obstetrics/gynecology | 8 |
| Diagnostic Radiology | 7 |
| Mental Health Counselors | 7 |
| Anesthesiology | 6 |
| Ophthalmology | 6 |
| Hospitalist | 6 |
| Clinical psychologist | 4 |
| Orthopedic surgery | 4 |
| General surgery | 4 |
| Registered Dietician/Nutrition Professional | 3 |
| General practice | 3 |
| Vascular surgery | 3 |
| Hematology/oncology | 3 |
| Cardiology | 3 |
| Neurosurgery | 3 |
| Neurology | 3 |
| Urology | 3 |
| Independent Diagnostic Testing Facility (IDTF) | 2 |
| Physical medicine and rehabilitation | 2 |
| Pathology | 2 |
| Interventional Cardiology | 2 |
| Certified nurse midwife | 2 |
| Nephrology | 2 |
| Occupational therapist (private practice) | 2 |
| Dermatology | 2 |
| Podiatry | 2 |
| Clinical Laboratory (Billing Independently) | 2 |
| Pulmonary disease | 1 |
| Psychiatry | 1 |
| Otolaryngology | 1 |
| Plastic and reconstructive surgery | 1 |
| Ambulatory Surgical Center | 1 |
| Pain Management | 1 |
| Hospice and Palliative Care | 1 |
| Radiation oncology | 1 |
| Certified clinical nurse specialist | 1 |
| Critical care (intensivists) | 1 |
| Nuclear medicine | 1 |
| Pediatric medicine | 1 |