What is a functional medicine doctor?

A functional medicine doctor is a licensed clinician — often an MD or DO — who looks for underlying drivers of chronic symptoms (history, labs, lifestyle, environment) instead of only matching a medication to a diagnosis.

The Institute for Functional Medicine describes the model as identifying and addressing root causes and dysfunctions that contribute to imbalance, then building a personalized plan. Functional medicine is a clinical approach, not a separate medical license: the clinician still needs whatever state license covers their scope (physician, nurse practitioner, and so on).

Training usually means additional coursework beyond standard medical or osteopathic school — for example IFM’s foundational and advanced modules, or the older IFMCP / newer FMCP credentials. That is different from a conventional primary care visit that is built around short appointments and insurance-driven problem lists. Visits with a functional medicine clinician are often longer, cash-pay or membership-based, and heavy on labs and lifestyle change.

Useful questions for a first visit:

• What license do you hold in this state, and what is outside your scope?
• How do you use labs, and who pays for them?
• Do you coordinate with my primary care doctor or specialists?
• What does the first 90 days of care look like, including cost?

Listings on this site are a directory of practices, not medical advice or an endorsement. See the medical disclaimer on every page.