| Nurse practitioner | 85 |
| Family practice | 27 |
| Physical therapist (private practice) | 19 |
| Certified Registered Nurse Anesthetist (CRNA) | 15 |
| Emergency medicine | 13 |
| Internal medicine | 13 |
| Mass Immunization Roster Billers | 12 |
| Chiropractic | 12 |
| Mental Health Counselors | 11 |
| Licensed clinical social worker | 10 |
| Obstetrics/gynecology | 8 |
| Pharmacy | 7 |
| Optometrist | 7 |
| General surgery | 7 |
| Centralized Flu | 4 |
| Physician assistant | 4 |
| Urology | 3 |
| Orthopedic surgery | 3 |
| Diagnostic Radiology | 3 |
| Speech / language pathology | 3 |
| Occupational therapist (private practice) | 3 |
| Neurology | 3 |
| Independent Diagnostic Testing Facility (IDTF) | 2 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 2 |
| Hospitalist | 2 |
| Hematology/oncology | 2 |
| Gastroenterology | 2 |
| Physical medicine and rehabilitation | 2 |
| Psychiatry | 2 |
| Anesthesiology | 2 |
| Cardiology | 2 |
| Podiatry | 2 |
| Certified nurse midwife | 1 |
| Medical oncology | 1 |
| Audiologist (billing independently) | 1 |
| Vascular surgery | 1 |
| Public Health or Welfare Agencies (Federal, State, and local) | 1 |
| Plastic and reconstructive surgery | 1 |
| Radiation oncology | 1 |
| Infectious disease | 1 |
| Advanced Heart Failure and Transplant Cardiology | 1 |
| Ambulatory Surgical Center | 1 |
| Ophthalmology | 1 |
| Pulmonary disease | 1 |
| Portable X-Ray Supplier (Billing Independently) | 1 |
| Otolaryngology | 1 |
| Clinical Laboratory (Billing Independently) | 1 |
| Pathology | 1 |
| Dermatology | 1 |