| Nurse practitioner | 218 |
| Certified Registered Nurse Anesthetist (CRNA) | 88 |
| Physical therapist (private practice) | 71 |
| Internal medicine | 66 |
| Family practice | 53 |
| Physician assistant | 51 |
| Emergency medicine | 49 |
| Licensed clinical social worker | 35 |
| Orthopedic surgery | 23 |
| Chiropractic | 23 |
| Anesthesiology | 23 |
| Optometrist | 22 |
| Obstetrics/gynecology | 21 |
| Dermatology | 21 |
| Mass Immunization Roster Billers | 21 |
| Diagnostic Radiology | 21 |
| General surgery | 20 |
| Cardiology | 17 |
| Neurology | 15 |
| Ophthalmology | 14 |
| Gastroenterology | 13 |
| Clinical psychologist | 13 |
| Psychiatry | 13 |
| Hematology/oncology | 12 |
| Physical medicine and rehabilitation | 12 |
| Mental Health Counselors | 11 |
| Audiologist (billing independently) | 11 |
| Urology | 10 |
| Podiatry | 10 |
| Hospitalist | 9 |
| Neurosurgery | 9 |
| Ambulatory Surgical Center | 8 |
| Interventional Cardiology | 8 |
| Pharmacy | 8 |
| Otolaryngology | 7 |
| Pathology | 7 |
| Radiation oncology | 6 |
| Occupational therapist (private practice) | 6 |
| Centralized Flu | 5 |
| Nephrology | 5 |
| Pulmonary disease | 5 |
| Cardiac Electrophysiology | 5 |
| Pain Management | 5 |
| Allergy/immunology | 4 |
| Interventional Pain Management (IPM) | 4 |
| Pediatric medicine | 4 |
| General practice | 3 |
| Endocrinology | 3 |
| Infectious disease | 3 |
| Vascular surgery | 3 |
| Plastic and reconstructive surgery | 3 |
| Rheumatology | 3 |
| Advanced Heart Failure and Transplant Cardiology | 2 |
| Speech / language pathology | 2 |
| Surgical oncology | 2 |
| Thoracic surgery | 2 |
| Registered Dietician/Nutrition Professional | 2 |
| Interventional radiology | 2 |
| Hand surgery | 1 |
| Colorectal surgery (formerly proctology) | 1 |
| Gynecologist/oncologist | 1 |
| Sports Medicine | 1 |
| Hospice and Palliative Care | 1 |
| Home Infusion Therapy Services | 1 |
| Certified nurse midwife | 1 |
| Critical care (intensivists) | 1 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 1 |
| Addiction medicine | 1 |