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, algorithmically scored, 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 Basima Williams, DO (BDS 8.7), Smitha C. Reddy, MD, Functional Medicine, Rheumatologist (BDS 8.7), Aaron Erez, DO (BDS 8.7). Rankings are based on BestDosage's transparent BDS scoring methodology, which evaluates reviewed reputation, listed credentials, professional presence, profile depth, and location detail — five weighted criteria drawn from public data.

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 7.6 / 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.

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 Basima Williams, DO (BDS 8.7), Smitha C. Reddy, MD, Functional Medicine, Rheumatologist (BDS 8.7), Aaron Erez, DO (BDS 8.7). 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 five weighted criteria drawn from public data: reviewed reputation, listed credentials, professional presence, profile depth, and location detail. Scores run to 10, and we publish one only at 7.0 or above.

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.

Learn About Functional Medicine Doctors

📖 Functional Medicine Guide → Functional Medicine: Complete Guide → Functional Medicine vs Integrative Medicine → What Is Functional Medicine?🏥 IV Therapy Centers in California

Explore More

All Functional Medicine Doctors California Directory Full Directory Take the Quiz Compare Providers

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

Best Functional Medicine Doctors in San Diego, CA

Functional Medicine Doctors in Nearby Cities

Basima Williams, DO

Smitha C. Reddy, MD, Functional Medicine, Rheumatologist

Aaron Erez, DO

Danielle J. Douglas, MD

Jordan Scott, ND

George Rice, MD, MS

Margaret M. Gold, MD, PC, MMTCP, Certification CIIS CPTR

Lexy Parsons, DACM, MS, L.Ac

Kulwinder K. Fayssoux, MD

Sofia Gonzalez Chavez, MD, IFMCP

Frequently Asked Questions

Learn About Functional Medicine Doctors

Explore More