| Nurse practitioner | 347 |
| Certified Registered Nurse Anesthetist (CRNA) | 115 |
| Internal medicine | 105 |
| Physician assistant | 92 |
| Family practice | 88 |
| Anesthesiology | 66 |
| Emergency medicine | 61 |
| Diagnostic Radiology | 39 |
| Chiropractic | 36 |
| Orthopedic surgery | 34 |
| General surgery | 32 |
| Obstetrics/gynecology | 30 |
| Psychiatry | 26 |
| Physical therapist (private practice) | 25 |
| Mental Health Counselors | 22 |
| Optometrist | 22 |
| Neurology | 22 |
| Ophthalmology | 21 |
| Hospitalist | 19 |
| Gastroenterology | 19 |
| Cardiology | 18 |
| Mass Immunization Roster Billers | 17 |
| Physical medicine and rehabilitation | 16 |
| Licensed clinical social worker | 16 |
| Pathology | 16 |
| Critical care (intensivists) | 15 |
| Urology | 13 |
| Dermatology | 13 |
| Podiatry | 13 |
| Interventional Cardiology | 13 |
| Pulmonary disease | 12 |
| Clinical psychologist | 12 |
| Nephrology | 11 |
| Neurosurgery | 10 |
| Hematology/oncology | 10 |
| Endocrinology | 9 |
| Pain Management | 9 |
| Otolaryngology | 9 |
| Infectious disease | 9 |
| Rheumatology | 8 |
| Speech / language pathology | 8 |
| Cardiac Electrophysiology | 6 |
| Vascular surgery | 6 |
| Ambulatory Surgical Center | 6 |
| Plastic and reconstructive surgery | 5 |
| Pharmacy | 5 |
| Sports Medicine | 5 |
| Pediatric medicine | 4 |
| Thoracic surgery | 4 |
| Centralized Flu | 4 |
| Medical oncology | 4 |
| Independent Diagnostic Testing Facility (IDTF) | 4 |
| Occupational therapist (private practice) | 4 |
| Oral surgery (dentists only) | 4 |
| Hand surgery | 4 |
| Interventional radiology | 3 |
| Clinical Laboratory (Billing Independently) | 3 |
| Radiation oncology | 3 |
| Audiologist (billing independently) | 3 |
| Certified nurse midwife | 3 |
| Hospice and Palliative Care | 3 |
| Sleep Medicine | 3 |
| Allergy/immunology | 3 |
| Interventional Pain Management (IPM) | 3 |
| General practice | 2 |
| Colorectal surgery (formerly proctology) | 2 |
| Marriage and Family Therapist | 2 |
| Opioid Treatment Program | 1 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 1 |
| Maxillofacial surgery | 1 |
| Home Infusion Therapy Services | 1 |
| Gynecologist/oncologist | 1 |
| Certified clinical nurse specialist | 1 |
| Cardiac surgery | 1 |
| Addiction medicine | 1 |
| Dentist | 1 |
| Surgical oncology | 1 |