| Nurse practitioner | 45 |
| Physical therapist (private practice) | 20 |
| Licensed clinical social worker | 16 |
| Family practice | 16 |
| Physician assistant | 15 |
| Internal medicine | 13 |
| Mental Health Counselors | 12 |
| Diagnostic Radiology | 10 |
| Optometrist | 7 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 6 |
| Chiropractic | 5 |
| Anesthesiology | 5 |
| Obstetrics/gynecology | 5 |
| Critical care (intensivists) | 4 |
| Opioid Treatment Program | 4 |
| Psychiatry | 4 |
| Occupational therapist (private practice) | 3 |
| Clinical psychologist | 3 |
| Cardiology | 3 |
| Emergency medicine | 3 |
| General surgery | 3 |
| Centralized Flu | 3 |
| Independent Diagnostic Testing Facility (IDTF) | 3 |
| Ambulatory Surgical Center | 2 |
| Orthopedic surgery | 2 |
| Certified Registered Nurse Anesthetist (CRNA) | 2 |
| Speech / language pathology | 2 |
| Pediatric medicine | 2 |
| Neurology | 2 |
| Clinical Laboratory (Billing Independently) | 2 |
| Mass Immunization Roster Billers | 2 |
| Hematology/oncology | 2 |
| Hospitalist | 1 |
| Podiatry | 1 |
| Nephrology | 1 |
| Medical Genetics and Genomics | 1 |
| Pathology | 1 |
| Infectious disease | 1 |
| Preventive medicine | 1 |
| Pulmonary disease | 1 |
| Dermatology | 1 |
| Vascular surgery | 1 |
| Certified nurse midwife | 1 |
| Audiologist (billing independently) | 1 |
| Home Infusion Therapy Services | 1 |
| Otolaryngology | 1 |
| Medical oncology | 1 |