| Nurse practitioner | 359 |
| Internal medicine | 295 |
| Physician assistant | 189 |
| Emergency medicine | 130 |
| Physical therapist (private practice) | 121 |
| Licensed clinical social worker | 95 |
| Family practice | 90 |
| Obstetrics/gynecology | 88 |
| Psychiatry | 83 |
| Anesthesiology | 78 |
| Anesthesiologist Assistant | 66 |
| Hospitalist | 54 |
| Neurology | 52 |
| Clinical psychologist | 47 |
| Diagnostic Radiology | 44 |
| Dermatology | 41 |
| Mass Immunization Roster Billers | 37 |
| General surgery | 36 |
| Ophthalmology | 34 |
| Cardiology | 33 |
| Orthopedic surgery | 33 |
| Hematology/oncology | 31 |
| Pediatric medicine | 30 |
| Pulmonary disease | 30 |
| Gastroenterology | 29 |
| Pathology | 29 |
| Critical care (intensivists) | 27 |
| Nephrology | 24 |
| Infectious disease | 24 |
| Mental Health Counselors | 24 |
| Podiatry | 23 |
| Certified Registered Nurse Anesthetist (CRNA) | 22 |
| Physical medicine and rehabilitation | 22 |
| Otolaryngology | 20 |
| Endocrinology | 19 |
| Occupational therapist (private practice) | 18 |
| Optometrist | 18 |
| Plastic and reconstructive surgery | 14 |
| Rheumatology | 14 |
| Chiropractic | 13 |
| Speech / language pathology | 12 |
| Pharmacy | 11 |
| Urology | 11 |
| Certified nurse midwife | 11 |
| Centralized Flu | 10 |
| Hospice and Palliative Care | 10 |
| Audiologist (billing independently) | 10 |
| Vascular surgery | 9 |
| Advanced Heart Failure and Transplant Cardiology | 8 |
| Radiation oncology | 8 |
| Interventional radiology | 8 |
| Registered Dietician/Nutrition Professional | 8 |
| Allergy/immunology | 7 |
| Geriatric medicine | 7 |
| Cardiac Electrophysiology | 6 |
| Interventional Cardiology | 6 |
| Colorectal surgery (formerly proctology) | 5 |
| Surgical oncology | 5 |
| Thoracic surgery | 5 |
| Neurosurgery | 4 |
| Medical oncology | 4 |
| Nuclear medicine | 4 |
| Ambulatory Surgical Center | 4 |
| Hand surgery | 3 |
| General practice | 3 |
| Osteopathic manipulative therapy | 2 |
| Sleep Medicine | 2 |
| Sports Medicine | 2 |
| Marriage and Family Therapist | 2 |
| Clinical Laboratory (Billing Independently) | 2 |
| Pain Management | 2 |
| Hematology | 2 |
| Gynecologist/oncologist | 1 |
| Micrographic Dermatologic Surgery | 1 |
| Certified clinical nurse specialist | 1 |
| Mammography Screening Center | 1 |
| Cardiac surgery | 1 |
| Home Infusion Therapy Services | 1 |
| Interventional Pain Management (IPM) | 1 |
| Independent Diagnostic Testing Facility (IDTF) | 1 |
| Opioid Treatment Program | 1 |