| Nurse practitioner | 125 |
| Chiropractic | 65 |
| Physical therapist (private practice) | 52 |
| Family practice | 47 |
| Physician assistant | 47 |
| Licensed clinical social worker | 27 |
| Certified Registered Nurse Anesthetist (CRNA) | 22 |
| Internal medicine | 20 |
| Emergency medicine | 16 |
| Anesthesiology | 15 |
| Diagnostic Radiology | 15 |
| Pathology | 12 |
| Hospitalist | 12 |
| Mental Health Counselors | 12 |
| Obstetrics/gynecology | 11 |
| Mass Immunization Roster Billers | 11 |
| Orthopedic surgery | 10 |
| General surgery | 9 |
| Occupational therapist (private practice) | 9 |
| Dermatology | 8 |
| Optometrist | 8 |
| Gastroenterology | 8 |
| Ophthalmology | 7 |
| Podiatry | 7 |
| Cardiology | 6 |
| Centralized Flu | 6 |
| Neurology | 6 |
| Psychiatry | 6 |
| Clinical psychologist | 6 |
| Audiologist (billing independently) | 5 |
| Pulmonary disease | 4 |
| Ambulatory Surgical Center | 4 |
| Certified nurse midwife | 4 |
| Registered Dietician/Nutrition Professional | 4 |
| Speech / language pathology | 4 |
| Urology | 4 |
| Interventional Cardiology | 3 |
| Gynecologist/oncologist | 3 |
| Nephrology | 3 |
| Plastic and reconstructive surgery | 3 |
| Rheumatology | 3 |
| Radiation oncology | 3 |
| General practice | 2 |
| Vascular surgery | 2 |
| Hematology/oncology | 2 |
| Clinical Laboratory (Billing Independently) | 2 |
| Otolaryngology | 2 |
| Interventional Pain Management (IPM) | 2 |
| Thoracic surgery | 2 |
| Pain Management | 2 |
| Physical medicine and rehabilitation | 2 |
| Cardiac surgery | 2 |
| Ambulance Service Supplier, e.g., private ambulance companies, funeral homes | 1 |
| Epileptologists | 1 |
| Slide Preparation Facilities | 1 |
| Medical Genetics and Genomics | 1 |
| Pediatric medicine | 1 |
| Sports Medicine | 1 |
| Endocrinology | 1 |
| Pharmacy | 1 |
| Hospice and Palliative Care | 1 |
| Independent Diagnostic Testing Facility (IDTF) | 1 |
| Single or Multispecialty Clinic or Group Practice | 1 |
| Hand surgery | 1 |
| Infectious disease | 1 |