| Nurse practitioner | 91 |
| Physician assistant | 42 |
| Family practice | 39 |
| Hospitalist | 28 |
| Certified Registered Nurse Anesthetist (CRNA) | 23 |
| Emergency medicine | 16 |
| Internal medicine | 16 |
| Pediatric medicine | 16 |
| Physical therapist (private practice) | 15 |
| Chiropractic | 13 |
| Anesthesiology | 13 |
| Obstetrics/gynecology | 12 |
| Diagnostic Radiology | 12 |
| Podiatry | 11 |
| Optometrist | 11 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 11 |
| Mental Health Counselors | 8 |
| Hematology/oncology | 8 |
| Cardiology | 8 |
| Mass Immunization Roster Billers | 8 |
| Gastroenterology | 6 |
| Orthopedic surgery | 6 |
| Psychiatry | 6 |
| Ophthalmology | 6 |
| Licensed clinical social worker | 5 |
| Pulmonary disease | 5 |
| Nephrology | 4 |
| Occupational therapist (private practice) | 4 |
| General surgery | 4 |
| Neurosurgery | 4 |
| Urology | 4 |
| Radiation oncology | 3 |
| Infectious disease | 3 |
| Pathology | 3 |
| Ambulatory Surgical Center | 3 |
| Clinical psychologist | 3 |
| Neurology | 2 |
| Dermatology | 2 |
| General practice | 2 |
| Cardiac Electrophysiology | 2 |
| Medical oncology | 2 |
| Thoracic surgery | 2 |
| Sports Medicine | 2 |
| Endocrinology | 2 |
| Otolaryngology | 2 |
| Plastic and reconstructive surgery | 2 |
| Hospice and Palliative Care | 2 |
| Pharmacy | 2 |
| Audiologist (billing independently) | 2 |
| Centralized Flu | 1 |
| Psychologist (billing independently) | 1 |
| Osteopathic manipulative therapy | 1 |
| Physical medicine and rehabilitation | 1 |
| Rheumatology | 1 |
| Registered Dietician/Nutrition Professional | 1 |
| Micrographic Dermatologic Surgery | 1 |
| Certified clinical nurse specialist | 1 |
| Certified nurse midwife | 1 |
| Pain Management | 1 |
| Hematology | 1 |
| Speech / language pathology | 1 |
| Cardiac surgery | 1 |