| Nurse practitioner | 294 |
| Physician assistant | 180 |
| Physical therapist (private practice) | 125 |
| Licensed clinical social worker | 96 |
| Family practice | 87 |
| Internal medicine | 82 |
| Mental Health Counselors | 53 |
| Emergency medicine | 47 |
| Chiropractic | 45 |
| Optometrist | 45 |
| Diagnostic Radiology | 42 |
| Mass Immunization Roster Billers | 37 |
| Certified Registered Nurse Anesthetist (CRNA) | 36 |
| Clinical psychologist | 36 |
| Anesthesiology | 35 |
| Obstetrics/gynecology | 26 |
| Orthopedic surgery | 24 |
| General surgery | 24 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 24 |
| Psychiatry | 23 |
| Occupational therapist (private practice) | 20 |
| Hospitalist | 17 |
| Cardiology | 17 |
| Neurology | 15 |
| Pediatric medicine | 15 |
| Gastroenterology | 13 |
| Dermatology | 13 |
| Certified nurse midwife | 12 |
| Ophthalmology | 12 |
| Hematology/oncology | 10 |
| Physical medicine and rehabilitation | 10 |
| Podiatry | 10 |
| Registered Dietician/Nutrition Professional | 9 |
| Ambulatory Surgical Center | 9 |
| Marriage and Family Therapist | 8 |
| Audiologist (billing independently) | 8 |
| Otolaryngology | 7 |
| Centralized Flu | 7 |
| Infectious disease | 7 |
| Pathology | 7 |
| Pulmonary disease | 6 |
| Critical care (intensivists) | 5 |
| Radiation oncology | 5 |
| Vascular surgery | 5 |
| Independent Diagnostic Testing Facility (IDTF) | 5 |
| Rheumatology | 4 |
| Neurosurgery | 4 |
| Urology | 4 |
| Speech / language pathology | 4 |
| Endocrinology | 4 |
| Interventional Cardiology | 4 |
| Plastic and reconstructive surgery | 4 |
| Sports Medicine | 3 |
| Nephrology | 3 |
| Hospice and Palliative Care | 3 |
| Thoracic surgery | 3 |
| Pain Management | 3 |
| Interventional radiology | 2 |
| Medical oncology | 2 |
| Allergy/immunology | 2 |
| Hand surgery | 2 |
| Unknown Provider | 1 |
| Oral surgery (dentists only) | 1 |
| Cardiac Electrophysiology | 1 |
| Pharmacy | 1 |
| Certified clinical nurse specialist | 1 |
| Single or Multispecialty Clinic or Group Practice | 1 |
| Psychologist (billing independently) | 1 |
| Micrographic Dermatologic Surgery | 1 |
| General Psychiatry | 1 |