| Nurse practitioner | 71 |
| Licensed clinical social worker | 33 |
| Family practice | 30 |
| Physician assistant | 21 |
| Physical therapist (private practice) | 19 |
| Certified Registered Nurse Anesthetist (CRNA) | 18 |
| Chiropractic | 14 |
| Clinical psychologist | 14 |
| Mental Health Counselors | 12 |
| Optometrist | 10 |
| Anesthesiology | 9 |
| Emergency medicine | 9 |
| General surgery | 8 |
| Obstetrics/gynecology | 6 |
| Psychiatry | 6 |
| Occupational therapist (private practice) | 6 |
| Mass Immunization Roster Billers | 5 |
| Hospitalist | 5 |
| Gastroenterology | 4 |
| Pathology | 4 |
| Cardiology | 4 |
| Radiation oncology | 4 |
| Internal medicine | 4 |
| Orthopedic surgery | 4 |
| Nephrology | 3 |
| Diagnostic Radiology | 3 |
| Registered Dietician/Nutrition Professional | 3 |
| Ophthalmology | 3 |
| Hematology/oncology | 3 |
| Pulmonary disease | 2 |
| Urology | 2 |
| Audiologist (billing independently) | 2 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 2 |
| Podiatry | 2 |
| Interventional radiology | 2 |
| Otolaryngology | 2 |
| Speech / language pathology | 2 |
| Interventional Cardiology | 2 |
| Critical care (intensivists) | 2 |
| Pharmacy | 1 |
| Neurology | 1 |
| Oral surgery (dentists only) | 1 |
| Unknown Provider | 1 |
| Plastic and reconstructive surgery | 1 |
| Neurosurgery | 1 |
| Cardiac surgery | 1 |
| Ambulatory Surgical Center | 1 |
| Dermatology | 1 |
| Medical oncology | 1 |
| Physical medicine and rehabilitation | 1 |
| Vascular surgery | 1 |
| Pain Management | 1 |
| Cardiac Electrophysiology | 1 |
| Sports Medicine | 1 |
| Certified clinical nurse specialist | 1 |