| Nurse practitioner | 59 |
| Physician assistant | 49 |
| Licensed clinical social worker | 31 |
| Family practice | 29 |
| Certified Registered Nurse Anesthetist (CRNA) | 24 |
| Internal medicine | 22 |
| Physical therapist (private practice) | 16 |
| Emergency medicine | 15 |
| Mental Health Counselors | 13 |
| Chiropractic | 12 |
| Optometrist | 10 |
| Obstetrics/gynecology | 8 |
| Anesthesiology | 7 |
| Clinical psychologist | 7 |
| Neurology | 5 |
| Cardiology | 5 |
| Orthopedic surgery | 4 |
| Mass Immunization Roster Billers | 4 |
| Hematology/oncology | 4 |
| General surgery | 4 |
| Diagnostic Radiology | 3 |
| Vascular surgery | 3 |
| Psychiatry | 3 |
| Interventional radiology | 3 |
| Dermatology | 3 |
| Ophthalmology | 3 |
| Pathology | 3 |
| Pulmonary disease | 2 |
| Pediatric medicine | 2 |
| Physical medicine and rehabilitation | 2 |
| Hospitalist | 2 |
| Otolaryngology | 2 |
| Cardiac Electrophysiology | 2 |
| Interventional Cardiology | 1 |
| General practice | 1 |
| Centralized Flu | 1 |
| Audiologist (billing independently) | 1 |
| Critical care (intensivists) | 1 |
| Podiatry | 1 |
| Oral surgery (dentists only) | 1 |
| Rheumatology | 1 |
| Endocrinology | 1 |
| Pain Management | 1 |
| Ambulatory Surgical Center | 1 |
| Urology | 1 |
| Nephrology | 1 |
| Allergy/immunology | 1 |
| Colorectal surgery (formerly proctology) | 1 |