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Best Functional Medicine Doctors in Phoenix, AZ

Functional medicine practitioners who address root causes of disease through systems-oriented, patient-centered care. Compare top-rated functional medicine doctors in Phoenix, AZ, scored by AI, powered by real data.

Showing 26 of 26 functional medicine doctors

Last updated: May 2026

The highest-rated functional medicine doctors in Phoenix, AZ include Zhanna Tarjeft, FNP-BC, IFMCP (BDS 8.6), Wanda Ichiriu, PA-C, IFMCP (BDS 8.5), Jennifer J. Sosnowski, 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 26 functional medicine doctors in Phoenix, AZ based on credentials, patient reviews, and practice transparency. The average BestDosage Score for functional medicine doctors here is 7.1 / 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

PractitionerExceptional8.6
Zhanna Tarjeft, FNP-BC, IFMCP — practitioner in Phoenix, AZ

Zhanna Tarjeft, FNP-BC, IFMCP

Phoenix, AZ
Published
Functional Medicine
33 verified reviews
PractitionerExceptional8.5
Wanda Ichiriu, PA-C, IFMCP — practitioner in Phoenix, AZ

Wanda Ichiriu, PA-C, IFMCP

Phoenix, AZ
Functional Medicine
3 verified reviews
PractitionerExceptional8.3
Jennifer J. Sosnowski, MD — practitioner in Phoenix, AZ

Jennifer J. Sosnowski, MD

Phoenix, AZ
Published
Functional Medicine
19 verified reviews
PractitionerExceptional8.3
Bryan Glick, DO — practitioner in Phoenix, AZ

Bryan Glick, DO

Phoenix, AZ
Published
Functional Medicine
41 verified reviews
PractitionerExceptional8.1
Bridget R. Lehmann, NMD — practitioner in Phoenix, AZ

Bridget R. Lehmann, NMD

Phoenix, AZ
Published
Functional Medicine
108 verified reviews
PractitionerExceptional8.1
Amelia Lo, Family Nurse Practitioner — practitioner in Phoenix, AZ

Amelia Lo, Family Nurse Practitioner

Phoenix, AZ
Functional Medicine
125 verified reviews
PractitionerExceptional8.1
Rayette P. Casiano, MD — practitioner in Phoenix, AZ

Rayette P. Casiano, MD

Phoenix, AZ
Published
Functional Medicine
3 verified reviews
PractitionerHighly Recommended7.8
Chad Campbell, PA-C — practitioner in Phoenix, AZ

Chad Campbell, PA-C

Phoenix, AZ
Functional Medicine
1 verified reviews
PractitionerHighly Recommended7.7

S. Ross Dunbar, ND, MSOM

Phoenix, AZ
Published
Functional Medicine
4 verified reviews
PractitionerHighly Recommended7.6
Kari Vernon, DC — practitioner in Phoenix, AZ

Kari Vernon, DC

Phoenix, AZ
Functional Medicine
43 verified reviews
PractitionerHighly Recommended7.4
Patricia StandTal Clarke — practitioner in Phoenix, AZ

Patricia StandTal Clarke

Phoenix, AZ
Integrative MedicineFunctional MedicineHerbal Medicine
8 verified reviews
PractitionerHighly Recommended7.4
Emily Parke, DO — practitioner in Phoenix, AZ

Emily Parke, DO

Phoenix, AZ
PublishedClinical Trials
Functional Medicine
7 verified reviews
PractitionerHighly Recommended7.4
Susan Del Sordi-Staats, DO — practitioner in Phoenix, AZ

Susan Del Sordi-Staats, DO

Phoenix, AZ
Published
Functional Medicine
8 verified reviews
PractitionerHighly Recommended7.3
Michelle Jeffries, DO — practitioner in Phoenix, AZ

Michelle Jeffries, DO

Phoenix, AZ
Published
Functional Medicine
9 verified reviews
PractitionerHighly Recommended7.2

Margaret A. Powell, DC

Phoenix, AZ
Functional Medicine
12 verified reviews
PractitionerHighly Recommended7.1
Cheri D. Dersam, MD — practitioner in Phoenix, AZ

Cheri D. Dersam, MD

Phoenix, AZ
Functional Medicine
18 verified reviews
PractitionerGood6.8
Burgess Buchanan, MSN, ACNP-C — practitioner in Phoenix, AZ

Burgess Buchanan, MSN, ACNP-C

Phoenix, AZ
Published
Functional Medicine
PractitionerGood6.8
Tiffany Ziegler, DO, MS — practitioner in Phoenix, AZ

Tiffany Ziegler, DO, MS

Phoenix, AZ
Published
Functional Medicine
15 verified reviews
PractitionerGood6.6
Robert Walker, MD — practitioner in Phoenix, AZ

Robert Walker, MD

Phoenix, AZ
Published
Functional Medicine
34 verified reviews
PractitionerGood6.6
Sheridan James, MD — practitioner in Phoenix, AZ

Sheridan James, MD

Phoenix, AZ
PublishedClinical Trials
Functional Medicine
13 verified reviews
PractitionerGood6.1
Tasia Kurland, DNP, AGNP-C — practitioner in Phoenix, AZ

Tasia Kurland, DNP, AGNP-C

Phoenix, AZ
Functional Medicine
156 verified reviews
PractitionerGood6.0
Abby Borhan, MD — practitioner in Phoenix, AZ

Abby Borhan, MD

Phoenix, AZ
Functional Medicine
27 verified reviews
PractitionerListed5.7
Linda Eller, DO — practitioner in Phoenix, AZ

Linda Eller, DO

Phoenix, AZ
Published
Functional Medicine
3 verified reviews
PractitionerListed5.5

Lexine M. Hebets, MD

Phoenix, AZ
Functional Medicine
7 verified reviews
PractitionerListed5.5
Danielle B. Bechert, MD — practitioner in Phoenix, AZ

Danielle B. Bechert, MD

Phoenix, AZ
Published
Functional Medicine
23 verified reviews
PractitionerListed4.5

Janis Rustad

Phoenix, AZ
Functional Medicine
203 verified reviews

Frequently Asked Questions

Who is the best functional medicine doctor in Phoenix, AZ?
The highest-rated functional medicine doctors in Phoenix, AZ based on BestDosage Scores include Zhanna Tarjeft, FNP-BC, IFMCP (BDS 8.6), Wanda Ichiriu, PA-C, IFMCP (BDS 8.5), Jennifer J. Sosnowski, MD (BDS 8.3). Rankings are updated regularly using credentials, patient reviews, and practice transparency data.
How are functional medicine doctors in Phoenix, AZ 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 Phoenix, AZ?
We currently have 26 functional medicine doctors listed in Phoenix, AZ, each scored and ranked using our AI-powered methodology.
How much does a functional medicine doctor cost in Phoenix, AZ?
Functional medicine doctor costs in Phoenix, AZ 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 Phoenix, AZ?
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