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Understanding Healthcare Providers and Credentials

If you're considering chiropractic care, massage, or a related treatment, it helps to understand who's who. This guide explains common credentials — it does not list or endorse specific individual providers.

Common credentials explained

M.D. / D.O. — Medical doctors (M.D.) and osteopathic physicians (D.O.) complete medical school, residency training, and board licensing; they can diagnose, prescribe medication, and order and interpret the full range of medical tests.

D.C. (Doctor of Chiropractic) — Chiropractors complete a Doctor of Chiropractic degree, pass national board exams, and hold a state license. Their scope of practice (what they're permitted to do) varies by state.

P.T. (Physical Therapist) — Physical therapists hold a doctoral-level degree and state license, focusing on movement, strength, and functional rehabilitation after injury or surgery.

LMT (Licensed Massage Therapist) — Requirements vary by state but generally involve completing an accredited training program and passing a licensing or certification exam.

FNP (Family Nurse Practitioner) — Advanced-practice registered nurses with additional graduate training, licensed to diagnose, treat, and in most states prescribe medication, often working in primary care.

How to check a license

Each profession is licensed at the state level. For chiropractors, the Federation of Chiropractic Licensing Boards maintains a directory that links to each state board's own license-lookup tool, where you can confirm a license is active and check for any disciplinary history.

Questions worth asking at a first visit

What is your credential and state license number? How long have you been treating cases like mine? What would make you refer me to a different type of provider?