PractitionerExceptional8.6
Smitha C. Reddy, MD, Functional Medicine, Rheumatologist
San Diego, CA
Published
Functional Medicine
109 verified reviews
Best Functional Medicine Doctors in San Diego, CA
Functional medicine practitioners who address root causes of disease through systems-oriented, patient-centered care. Compare top-rated functional medicine doctors in San Diego, CA, scored by AI, powered by real data.
Showing 10 of 10 functional medicine doctors
Last updated: May 2026
The highest-rated functional medicine doctors in San Diego, CA include Smitha C. Reddy, MD, Functional Medicine, Rheumatologist (BDS 8.6), Aaron Erez, DO (BDS 8.3), Danielle J. Douglas, MD (BDS 8.3). Rankings are based on BestDosage's transparent BDS scoring methodology, which evaluates credentials, experience, and patient outcomes across 12 categories.
BestDosage has evaluated 10 functional medicine doctors in San Diego, CA based on credentials, patient reviews, and practice transparency. The average BestDosage Score for functional medicine doctors here is 7.5 / 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
PractitionerExceptional8.3
Aaron Erez, DO
San Diego, CA
Published
Functional Medicine
22 verified reviews
PractitionerExceptional8.3
Danielle J. Douglas, MD
San Diego, CA
Published
Functional Medicine
23 verified reviews
PractitionerExceptional8.3
Basima Williams, DO
San Diego, CA
Published
Functional Medicine
24 verified reviews
PractitionerExceptional8.2
Lexy Parsons, DACM, MS, L.Ac
San Diego, CA
Functional Medicine
256 verified reviews
PractitionerExceptional8.2
George Rice, MD, MS
San Diego, CA
PublishedClinical Trials
Functional Medicine
4 verified reviews
PractitionerHighly Recommended7.0
Margaret M. Gold, MD, PC, MMTCP, Certification CIIS CPTR
San Diego, CA
Published
Functional Medicine
3 verified reviews
PractitionerGood6.6
Jordan Scott, ND
San Diego, CA
Published
Functional Medicine
68 verified reviews
PractitionerListed5.8
Sofia Gonzalez Chavez, MD, IFMCP
San Diego, CA
PublishedClinical Trials
Functional Medicine
PractitionerListed5.5
Kulwinder K. Fayssoux, MD
San Diego, CA
Functional Medicine
8 verified reviews
Frequently Asked Questions
Who is the best functional medicine doctor in San Diego, CA?
The highest-rated functional medicine doctors in San Diego, CA based on BestDosage Scores include Smitha C. Reddy, MD, Functional Medicine, Rheumatologist (BDS 8.6), Aaron Erez, DO (BDS 8.3), Danielle J. Douglas, MD (BDS 8.3). Rankings are updated regularly using credentials, patient reviews, and practice transparency data.
How are functional medicine doctors in San Diego, CA scored?
Each functional medicine doctor is scored across 12 categories using public reviews and verified credentials. Scores range from 1 to 10, with tiers from "Listed" to "Elite."
How many functional medicine doctors are listed in San Diego, CA?
We currently have 10 functional medicine doctors listed in San Diego, CA, each scored and ranked using our AI-powered methodology.
How much does a functional medicine doctor cost in San Diego, CA?
Functional medicine doctor costs in San Diego, CA vary by provider, treatment type, and whether insurance is accepted. Many practitioners offer free consultations. Use BestDosage to compare pricing transparency across providers.
What should I look for in a functional medicine doctor?
Look for verified credentials, high patient review scores, transparent pricing, and relevant specializations. BestDosage evaluates all of these factors in its BDS scoring methodology so you can compare providers at a glance.
How do I choose the best functional medicine doctor in San Diego, CA?
Review BestDosage Scores and patient reviews, then consider telehealth availability, insurance acceptance, and specialization. Use our comparison tool to evaluate providers side by side, or take the Wellness Match quiz.
Does insurance cover functional medicine doctor visits?
Insurance coverage for functional medicine doctor visits varies by plan and provider. Some accept insurance directly, while others offer superbills for out-of-network reimbursement. Check individual practitioner profiles on BestDosage for insurance details.
Is it free to find a functional medicine doctor on BestDosage?
Yes, browsing the directory, viewing profiles, and comparing providers is completely free. Our scoring methodology is published openly for full transparency.
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Reviewed by Chad Waldman, Analytical Chemist · BestDosage Editorial Team · Last updated May 2026