Photo of Dr. Tiffany Mullen

Dr. Tiffany Mullen, DO

Functional medicine physician, , CA

Vytal Health

Dr. Mullen is a functional medicine physician and the founder of Vytal Health.

, CA
At a glance
Board certification
Family medicine and integrative medicine
Practice
Online functional medicine practice
Care team
Doctor and care coordinator

Facts on this page last checked October 2026. How we check doctors

About Dr. Mullen

Dr. Mullen earned her Doctor of Osteopathic Medicine from Chicago College of Osteopathic Medicine. She finished a family medicine residency at Creighton University / St. Joseph's Hospital and Medical Center in Phoenix and a fellowship in integrative medicine at the University of Arizona. She is board certified in family medicine and integrative medicine, and she has advanced training through the Institute for Functional Medicine.

She co-founded Vytal Health with Dr. Alex Yampolsky in July 2018. Today she is the primary genetics and longevity physician at Vytal Health. Her plans for healthy aging draw on metabolic markers, hormones, family history and lifestyle.

Membership and fees

Fees are not published. Ask the practice.

Services

Metabolic dysfunction Insulin resistance Hormone optimization Gut health Microbiome science Immune regulation Inflammation Longevity and healthy aging
What functional medicine doctors commonly treat

Education and credentials

Degree
DO
Medical school
Chicago College of Osteopathic Medicine
Residency
Family medicine, Creighton University / St. Joseph's Hospital and Medical Center, Phoenix
Fellowship
Integrative medicine, University of Arizona
Board certification
Family medicine and integrative medicine
Other certification
Integrative and functional medicine
Other certification
Advanced training, Institute for Functional Medicine (IFM)

Hospital and practice affiliations

Founder, Vytal Health
Primary genetics and longevity physician, Vytal Health

Recognition and research

Media and books

Discussed her route from childhood patient to telehealth founder on the Prime Health Podcast

Publications

Author of articles on the Vytal Health blog

Patient reviews

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Questions patients ask

Is Dr. Mullen board certified?

She is board certified in family medicine and integrative medicine.

Where did Dr. Mullen train?

She earned her Doctor of Osteopathic Medicine from Chicago College of Osteopathic Medicine. She completed a family medicine residency in Phoenix and a fellowship in integrative medicine at the University of Arizona.

What is Vytal Health?

Vytal Health is an online functional medicine practice. Dr. Mullen co-founded it in July 2018.

What does Dr. Mullen focus on?

Her clinical focus includes metabolic dysfunction and insulin resistance, hormone optimization, gut health and the microbiome, immune regulation and inflammation, and longevity and healthy aging.

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