| Nurse practitioner | 208 |
| Physical therapist (private practice) | 73 |
| Physician assistant | 44 |
| Internal medicine | 38 |
| Family practice | 36 |
| Licensed clinical social worker | 32 |
| Emergency medicine | 28 |
| Anesthesiology | 26 |
| Optometrist | 24 |
| Chiropractic | 22 |
| Obstetrics/gynecology | 18 |
| Pediatric medicine | 17 |
| Certified Registered Nurse Anesthetist (CRNA) | 16 |
| General surgery | 15 |
| Diagnostic Radiology | 13 |
| Mass Immunization Roster Billers | 11 |
| Gastroenterology | 7 |
| Podiatry | 7 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 7 |
| Cardiology | 7 |
| Hospitalist | 7 |
| Orthopedic surgery | 7 |
| Anesthesiologist Assistant | 6 |
| Nephrology | 6 |
| Dermatology | 6 |
| Neurology | 5 |
| Mental Health Counselors | 5 |
| Occupational therapist (private practice) | 5 |
| Pulmonary disease | 5 |
| Ophthalmology | 5 |
| Clinical psychologist | 4 |
| Interventional Cardiology | 4 |
| Psychiatry | 4 |
| Marriage and Family Therapist | 3 |
| Certified nurse midwife | 3 |
| Urology | 3 |
| Sports Medicine | 3 |
| Centralized Flu | 3 |
| Endocrinology | 3 |
| General practice | 3 |
| Clinical Laboratory (Billing Independently) | 3 |
| Hematology/oncology | 3 |
| Ambulatory Surgical Center | 2 |
| Pathology | 2 |
| Pain Management | 2 |
| Oral surgery (dentists only) | 2 |
| Cardiac Electrophysiology | 2 |
| Critical care (intensivists) | 2 |
| Otolaryngology | 2 |
| Audiologist (billing independently) | 2 |
| Physical medicine and rehabilitation | 2 |
| Pharmacy | 1 |
| Medical oncology | 1 |
| Sleep Medicine | 1 |
| Preventive medicine | 1 |
| Registered Dietician/Nutrition Professional | 1 |
| Osteopathic manipulative therapy | 1 |
| Radiation oncology | 1 |
| Speech / language pathology | 1 |
| Allergy/immunology | 1 |
| Interventional Pain Management (IPM) | 1 |
| Thoracic surgery | 1 |
| Interventional radiology | 1 |
| Plastic and reconstructive surgery | 1 |
| Hospice and Palliative Care | 1 |