| Nurse practitioner | 77 |
| Physician assistant | 48 |
| Internal medicine | 32 |
| Certified Registered Nurse Anesthetist (CRNA) | 29 |
| Emergency medicine | 18 |
| Family practice | 16 |
| Anesthesiology | 13 |
| General surgery | 12 |
| Orthopedic surgery | 10 |
| Obstetrics/gynecology | 9 |
| Diagnostic Radiology | 8 |
| Physical therapist (private practice) | 7 |
| Psychiatry | 6 |
| Optometrist | 6 |
| Mass Immunization Roster Billers | 5 |
| Cardiology | 5 |
| Chiropractic | 4 |
| Urology | 4 |
| Nephrology | 4 |
| Gastroenterology | 4 |
| Licensed clinical social worker | 4 |
| Clinical Laboratory (Billing Independently) | 4 |
| Pediatric medicine | 4 |
| Occupational therapist (private practice) | 4 |
| Mental Health Counselors | 4 |
| Pharmacy | 3 |
| Pulmonary disease | 3 |
| Podiatry | 2 |
| Interventional Cardiology | 2 |
| Ambulatory Surgical Center | 2 |
| Otolaryngology | 2 |
| Ophthalmology | 2 |
| Hospitalist | 2 |
| General practice | 2 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 2 |
| Audiologist (billing independently) | 2 |
| Neurosurgery | 2 |
| Centralized Flu | 2 |
| Hematology/oncology | 1 |
| Advanced Heart Failure and Transplant Cardiology | 1 |
| Neurology | 1 |
| Marriage and Family Therapist | 1 |
| Certified nurse midwife | 1 |
| Endocrinology | 1 |
| Osteopathic manipulative therapy | 1 |
| Rheumatology | 1 |
| Single or Multispecialty Clinic or Group Practice | 1 |
| Clinical psychologist | 1 |
| Opioid Treatment Program | 1 |
| Registered Dietician/Nutrition Professional | 1 |
| Infectious disease | 1 |
| Pathology | 1 |
| Physical medicine and rehabilitation | 1 |