| Nurse practitioner | 201 |
| Licensed clinical social worker | 60 |
| Physical therapist (private practice) | 52 |
| Physician assistant | 49 |
| Certified Registered Nurse Anesthetist (CRNA) | 42 |
| Family practice | 38 |
| Optometrist | 25 |
| Emergency medicine | 24 |
| Internal medicine | 20 |
| Hospitalist | 20 |
| Diagnostic Radiology | 19 |
| Chiropractic | 18 |
| Clinical psychologist | 17 |
| Mass Immunization Roster Billers | 17 |
| Obstetrics/gynecology | 12 |
| Cardiology | 12 |
| Anesthesiology | 12 |
| Orthopedic surgery | 11 |
| Ophthalmology | 10 |
| Psychiatry | 10 |
| Mental Health Counselors | 9 |
| Neurology | 9 |
| Endocrinology | 8 |
| General surgery | 6 |
| Plastic and reconstructive surgery | 6 |
| Marriage and Family Therapist | 5 |
| Occupational therapist (private practice) | 5 |
| Pediatric medicine | 5 |
| Hematology/oncology | 5 |
| Certified nurse midwife | 5 |
| Cardiac Electrophysiology | 4 |
| Speech / language pathology | 4 |
| Pathology | 4 |
| Radiation oncology | 4 |
| Dermatology | 4 |
| Registered Dietician/Nutrition Professional | 4 |
| Rheumatology | 4 |
| Ambulatory Surgical Center | 4 |
| Centralized Flu | 4 |
| Pulmonary disease | 4 |
| Audiologist (billing independently) | 3 |
| Interventional Cardiology | 3 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 3 |
| Pharmacy | 3 |
| Urology | 3 |
| Otolaryngology | 3 |
| Interventional Pain Management (IPM) | 3 |
| Gastroenterology | 2 |
| Podiatry | 2 |
| Physical medicine and rehabilitation | 2 |
| Clinical Laboratory (Billing Independently) | 2 |
| Cardiac surgery | 2 |
| Infectious disease | 2 |
| Thoracic surgery | 2 |
| Allergy/immunology | 2 |
| Hospice and Palliative Care | 2 |
| Neurosurgery | 2 |
| Sports Medicine | 1 |
| Certified clinical nurse specialist | 1 |
| General practice | 1 |
| Pain Management | 1 |
| Nephrology | 1 |