| Nurse practitioner | 113 |
| Physician assistant | 68 |
| Internal medicine | 48 |
| Family practice | 46 |
| Chiropractic | 32 |
| Physical therapist (private practice) | 31 |
| Certified Registered Nurse Anesthetist (CRNA) | 30 |
| Emergency medicine | 29 |
| Licensed clinical social worker | 26 |
| Clinical psychologist | 26 |
| Mental Health Counselors | 25 |
| Optometrist | 25 |
| Obstetrics/gynecology | 18 |
| Anesthesiology | 14 |
| General surgery | 13 |
| Psychiatry | 12 |
| Cardiology | 11 |
| Hospitalist | 9 |
| Mass Immunization Roster Billers | 9 |
| Pulmonary disease | 8 |
| Podiatry | 7 |
| Orthopedic surgery | 7 |
| Ophthalmology | 6 |
| Certified nurse midwife | 6 |
| Diagnostic Radiology | 5 |
| Hematology/oncology | 5 |
| Centralized Flu | 5 |
| Dermatology | 5 |
| Pediatric medicine | 5 |
| Neurology | 4 |
| Audiologist (billing independently) | 4 |
| Speech / language pathology | 4 |
| Pathology | 4 |
| Endocrinology | 4 |
| Physical medicine and rehabilitation | 4 |
| Critical care (intensivists) | 4 |
| Urology | 4 |
| Nephrology | 3 |
| Allergy/immunology | 3 |
| Plastic and reconstructive surgery | 3 |
| Occupational therapist (private practice) | 3 |
| Neurosurgery | 3 |
| Otolaryngology | 3 |
| General practice | 3 |
| Rheumatology | 3 |
| Gastroenterology | 3 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 3 |
| Interventional radiology | 3 |
| Opioid Treatment Program | 2 |
| Radiation oncology | 2 |
| Infectious disease | 2 |
| Ambulatory Surgical Center | 1 |
| Preventive medicine | 1 |
| Thoracic surgery | 1 |
| Colorectal surgery (formerly proctology) | 1 |
| Cardiac Electrophysiology | 1 |
| Addiction medicine | 1 |
| Cardiac surgery | 1 |
| Pain Management | 1 |
| Sleep Medicine | 1 |
| Hand surgery | 1 |
| Home Infusion Therapy Services | 1 |
| Psychologist (billing independently) | 1 |
| Unknown Provider | 1 |
| Hospice and Palliative Care | 1 |
| Marriage and Family Therapist | 1 |