| Nurse practitioner | 260 |
| Physician assistant | 92 |
| Internal medicine | 84 |
| Family practice | 72 |
| Certified Registered Nurse Anesthetist (CRNA) | 64 |
| Mental Health Counselors | 56 |
| Chiropractic | 42 |
| Emergency medicine | 37 |
| Physical therapist (private practice) | 37 |
| Mass Immunization Roster Billers | 31 |
| Orthopedic surgery | 30 |
| Optometrist | 29 |
| Anesthesiology | 26 |
| Obstetrics/gynecology | 23 |
| Licensed clinical social worker | 22 |
| Clinical psychologist | 22 |
| General surgery | 21 |
| Hospitalist | 20 |
| Diagnostic Radiology | 19 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 19 |
| Cardiology | 16 |
| Podiatry | 15 |
| Ophthalmology | 15 |
| Psychiatry | 14 |
| Pediatric medicine | 12 |
| Urology | 11 |
| Gastroenterology | 11 |
| Pulmonary disease | 10 |
| Neurology | 9 |
| Occupational therapist (private practice) | 9 |
| Certified clinical nurse specialist | 9 |
| Hematology/oncology | 9 |
| Dermatology | 9 |
| Endocrinology | 7 |
| Ambulatory Surgical Center | 7 |
| Centralized Flu | 7 |
| Audiologist (billing independently) | 7 |
| Pathology | 6 |
| Otolaryngology | 6 |
| Anesthesiologist Assistant | 6 |
| Radiation oncology | 5 |
| Hospice and Palliative Care | 4 |
| Pharmacy | 4 |
| Speech / language pathology | 4 |
| Interventional Cardiology | 4 |
| Critical care (intensivists) | 4 |
| Cardiac Electrophysiology | 4 |
| Vascular surgery | 3 |
| Physical medicine and rehabilitation | 3 |
| Medical oncology | 2 |
| Plastic and reconstructive surgery | 2 |
| Colorectal surgery (formerly proctology) | 2 |
| Gynecologist/oncologist | 2 |
| Pain Management | 2 |
| Hand surgery | 2 |
| Interventional radiology | 2 |
| Nephrology | 2 |
| Registered Dietician/Nutrition Professional | 2 |
| Infectious disease | 2 |
| Marriage and Family Therapist | 2 |
| Cardiac surgery | 1 |
| Certified nurse midwife | 1 |
| Rheumatology | 1 |
| Maxillofacial surgery | 1 |
| Thoracic surgery | 1 |
| Opioid Treatment Program | 1 |
| Nuclear medicine | 1 |
| Single or Multispecialty Clinic or Group Practice | 1 |
| Sports Medicine | 1 |
| Clinical Laboratory (Billing Independently) | 1 |
| Interventional Pain Management (IPM) | 1 |
| General practice | 1 |