
Best Functional Medicine Doctors in Portland, OR
Functional medicine practitioners who address root causes of disease through systems-oriented, patient-centered care. Compare top-rated functional medicine doctors in Portland, OR, scored by AI, powered by real data.
Showing 19 of 19 functional medicine doctors
Last updated: May 2026
The highest-rated functional medicine doctors in Portland, OR include Stacy M. Ronquillo, FNP-BC, AGACNP-BC (BDS 8.9), Laura S. Martell, ND, LAc, FABNO, IFMCP, MSCP (BDS 8.6), Shalli B. Deyo, PharmD, IFMCP (BDS 8.5). Rankings are based on BestDosage's transparent BDS scoring methodology, which evaluates credentials, experience, and patient outcomes across 12 categories.
BestDosage has evaluated 19 functional medicine doctors in Portland, OR based on credentials, patient reviews, and practice transparency. The average BestDosage Score for functional medicine doctors here is 7.2 / 10 — reflecting a strong overall standard of care in this market. Functional medicine doctors are typically MDs, DOs, NDs, or NPs with additional training through the Institute for Functional Medicine (IFM). Look for board certification and documented experience with root-cause, systems-based protocols.
Functional Medicine Doctors in Nearby Cities


Laura S. Martell, ND, LAc, FABNO, IFMCP, MSCP

Shalli B. Deyo, PharmD, IFMCP

Lisa Siino, DO, IFMCP
Stephanie Jones, ARNP-C, IFMCP

Aleksandra Giedwoyn, MD

Michelle Eckroth, MD

Ericha Clare, ND, LAc, IFMCP

Jillian Moehle, ND, IFMCP, MSCP

Virginia Shapiro, DC
Krista Espenship, IFMCP

Maggie K. Yu, MD

Jill Carter, DNP, FNP, PMHNP

Frank A. Sievert, MD
Kaley Bourgeois, ND

Staci Whitman, DMD, IFMCP

Ann Marie Dundas
Lara Williams

Kelly Witbeck
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Reviewed by Chad Waldman, Analytical Chemist · BestDosage Editorial Team · Last updated May 2026