| Nurse practitioner | 150 |
| Physician assistant | 64 |
| Physical therapist (private practice) | 34 |
| Family practice | 25 |
| Certified Registered Nurse Anesthetist (CRNA) | 23 |
| Internal medicine | 22 |
| Optometrist | 19 |
| Licensed clinical social worker | 18 |
| Emergency medicine | 18 |
| Chiropractic | 14 |
| Mass Immunization Roster Billers | 11 |
| Pediatric medicine | 11 |
| Occupational therapist (private practice) | 10 |
| General surgery | 10 |
| Mental Health Counselors | 9 |
| Orthopedic surgery | 9 |
| Anesthesiology | 9 |
| Clinical psychologist | 8 |
| Infectious disease | 8 |
| Psychiatry | 7 |
| Obstetrics/gynecology | 7 |
| Podiatry | 7 |
| Centralized Flu | 6 |
| Ophthalmology | 6 |
| Gastroenterology | 6 |
| Hospitalist | 6 |
| Cardiology | 5 |
| Diagnostic Radiology | 5 |
| Neurology | 4 |
| Ambulatory Surgical Center | 4 |
| Vascular surgery | 4 |
| Neurosurgery | 4 |
| Speech / language pathology | 3 |
| Nephrology | 3 |
| Critical care (intensivists) | 3 |
| Otolaryngology | 3 |
| Urology | 3 |
| Pathology | 3 |
| Allergy/immunology | 3 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 2 |
| Audiologist (billing independently) | 2 |
| Hematology/oncology | 2 |
| Pain Management | 2 |
| Dermatology | 2 |
| Marriage and Family Therapist | 2 |
| Rheumatology | 2 |
| Radiation oncology | 2 |
| Plastic and reconstructive surgery | 2 |
| Certified nurse midwife | 2 |
| Endocrinology | 2 |
| Hospice and Palliative Care | 1 |
| Pharmacy | 1 |
| Pulmonary disease | 1 |
| Certified clinical nurse specialist | 1 |
| General practice | 1 |
| Physical medicine and rehabilitation | 1 |
| Gynecologist/oncologist | 1 |
| Cardiac Electrophysiology | 1 |
| Psychologist (billing independently) | 1 |
| Unknown Provider | 1 |
| Sports Medicine | 1 |
| Medical oncology | 1 |