Dr. Kelly McCann
Dr. Kelly McCann, MD, MPH, is a leading physician in functional, integrative, and environmental medicine based in Orange County, CA. With 25+ years of experience, she specializes in uncovering root causes of chronic illness — from mold and mycotoxin exposure to autoimmune conditions — offering personalized, compassionate care that addresses the mind-body-spirit connection.
About
Dr. Kelly McCann is a board-certified physician specializing in functional, integrative, and environmental medicine. Practicing since 2000, she has helped thousands of patients uncover the root causes of chronic illness — from mold and mycotoxin exposure to Lyme disease, autoimmune conditions, and hormonal imbalances. She is one of only 35 physicians worldwide to have completed the Residential Fellowship in Integrative Medicine at the University of Arizona under Dr. Andrew Weil. Based in Costa Mesa, CA, she provides personalized, compassionate care through a holistic mind-body-spirit approach.
Key Features
Dr. McCann brings over two decades of expertise across functional, integrative, and environmental medicine — combining rigorous medical training with a holistic philosophy to treat the most complex chronic conditions.
25+
Years in Practice
1 of 35
Physicians Worldwide with UA Integrative Fellowship
3
Board Certifications
1000s
Patients Helped
Why Choose Us
Where conventional medicine falls short in addressing chronic illness, Dr. McCann's functional, integrative, and environmental approach finds answers. She develops personalized wellness plans that identify root causes, set actionable goals, and create sustainable health outcomes for complex, multi-system conditions.
25+ Years of Experience
Practicing medicine since 2000 with dual residencies in internal medicine and pediatrics.
1 of 35 Worldwide
Completed the Residential Fellowship in Integrative Medicine at the University of Arizona with Dr. Andrew Weil.
Environmental Medicine Expert
Board member of AAEM and ISEAI. International lecturer on mold illness, mycotoxins, and environmental exposures.
Root-Cause Focused
Identifies underlying causes of chronic fatigue, autoimmune disease, and complex multi-system conditions.
Mind-Body-Spirit Approach
Holds a Master's in Spiritual Psychology, integrating holistic wellness into every treatment plan.
Services List
Clinical Services
- Functional Medicine Consultation
- Integrative Medicine
- Environmental Medicine
- Mold & Mycotoxin Evaluation
- Lyme Disease & Chronic Infection Treatment
- MCAS Diagnosis & Management
- Autoimmune Disease Care
- Hormone & Thyroid Optimization
- GI Health (SIBO/SIFO)
Education & Resources
- MCAS Masterclass (Online Course)
- The Unforgetting Project (Course)
- Webinar Library & Wellness Membership
- Services for Practitioners
- Supplement Shop
Dr. Kelly McCann
MD, MPH — Functional, Integrative & Environmental Medicine
Contact Information
Visit WebsiteService Area
Main Practice
Costa Mesa, Orange County, California
Markets Served
Coverage
Dr. McCann sees patients through The Spring Center in Orange County, CA. She also offers online courses, webinars, and practitioner resources available nationally.
Credentials
Board Certified — Integrative Medicine
American Board of Physician Specialties (ABPS)
Board Certified — Internal Medicine
American Board of Internal Medicine (ABIM)
Certified — Institute for Functional Medicine
IFM Certified Practitioner
Residential Fellowship — Integrative Medicine
University of Arizona, Program of Integrative Medicine (with Dr. Andrew Weil). One of only 35 physicians worldwide.
Board Member — AAEM
American Academy of Environmental Medicine
Board Member — ISEAI
International Society of Environmentally Acquired Illness. 2020 Conference Chair.
Member — ILADS
International Lyme and Associated Diseases Society
Staff Physician — Hoag Memorial Hospital
Newport Beach, California
Founding Member
Healthy Building Alliance
Professional ·