| Nurse practitioner | 152 |
| Licensed clinical social worker | 94 |
| Physician assistant | 90 |
| Certified Registered Nurse Anesthetist (CRNA) | 55 |
| Internal medicine | 54 |
| Family practice | 50 |
| Chiropractic | 40 |
| Physical therapist (private practice) | 29 |
| Anesthesiology | 26 |
| Mental Health Counselors | 24 |
| Emergency medicine | 23 |
| Psychiatry | 18 |
| Orthopedic surgery | 15 |
| Optometrist | 14 |
| Obstetrics/gynecology | 14 |
| Cardiology | 11 |
| General surgery | 10 |
| Mass Immunization Roster Billers | 10 |
| Ophthalmology | 9 |
| Clinical psychologist | 8 |
| Diagnostic Radiology | 8 |
| Podiatry | 7 |
| Neurology | 6 |
| Physical medicine and rehabilitation | 6 |
| Audiologist (billing independently) | 6 |
| Certified nurse midwife | 5 |
| Pulmonary disease | 5 |
| Neurosurgery | 5 |
| Vascular surgery | 4 |
| Endocrinology | 4 |
| Gastroenterology | 4 |
| Otolaryngology | 4 |
| Hematology/oncology | 4 |
| Interventional Cardiology | 4 |
| Hospitalist | 4 |
| Pathology | 4 |
| Pharmacy | 4 |
| Critical care (intensivists) | 3 |
| Oral surgery (dentists only) | 3 |
| Plastic and reconstructive surgery | 3 |
| Thoracic surgery | 3 |
| Occupational therapist (private practice) | 3 |
| Urology | 2 |
| Cardiac Electrophysiology | 2 |
| Pediatric medicine | 2 |
| Infectious disease | 2 |
| Radiation oncology | 2 |
| Dermatology | 2 |
| Centralized Flu | 2 |
| Geriatric medicine | 2 |
| Ambulatory Surgical Center | 2 |
| Hand surgery | 1 |
| Certified clinical nurse specialist | 1 |
| Allergy/immunology | 1 |
| Micrographic Dermatologic Surgery | 1 |
| Hospice and Palliative Care | 1 |
| Sports Medicine | 1 |
| Interventional radiology | 1 |
| Speech / language pathology | 1 |
| Opioid Treatment Program | 1 |
| Medical oncology | 1 |
| Sleep Medicine | 1 |
| Nephrology | 1 |
| Clinical Laboratory (Billing Independently) | 1 |
| General practice | 1 |
| Hematology | 1 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 1 |
| Independent Diagnostic Testing Facility (IDTF) | 1 |
| Rheumatology | 1 |
| Cardiac surgery | 1 |
| Unknown Provider | 1 |