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Integrative Primary Care: A Lifestyle Approach

Our Philosophy

We offer all the services you expect from a primary care practice, from comprehensive annual exams to urgent visits for sudden health concerns. When treating illness, we look for the most natural options first and then to conventional Western medicine when necessary.

We understand healing comes in many forms and believe finding a balance between healing modalities offers the most effective strategy for optimizing your health and wellness. We offer acupuncture, health coaching, nutrition consults, and nutraceutical recommendations as part of our membership program.

We believe nutrition, movement, stress management, quality sleep, and healthy relationships are fundamental to optimal health. Our Lifestyle and Functional Medicine approach means that during office visits we take the time to learn about your life and the way you live it, in order to help you stay healthy or make changes to feel healthier.

Our Practice

We practice using a collaborative care model with a focus on treating the whole person and whole family. We believe a trusting and ongoing doctor-patient relationship based on mutual respect is simply good health care. Our goal is to work together with you as a partner on your journey to optimal health.

Unlike a typical primary care practice where a physician has between 2,500 - 3,500 patients, our doctors limit their individual practice to no more than 300 patients. This means Dr. Johnny and Dr. Josh can spend the time necessary to know you and to understand your health goals, as well as having the time to think and proactively research your treatment and wellness plan.

Our Team

Johnny Tsai, M.D.

FAMILY PHYSICIAN

Dr. Johnny is a Los Angeles native who is willing to support the Lakers even when they were an underachieving team.

He now calls Irvine home and is grateful to practice Direct Primary Care here. He enjoys learning from his patients and listening to their stories in a relaxed and mindful manner, preferably with some coffee or tea in hand.

When not thinking about his patients, he is usually studying natural and traditional healing methods, reading about food and nutrition, contemplating health disparities, or learning about new technology and treatments in healthcare.

Outside of “work,” he enjoys traveling the world, practicing photography, learning the guitar and music production, tasting food and wine, and learning about architecture and design.

And in his spare time, you might find him at the beach surfing, up in the mountains snowboarding, around the house or garden tinkering, in the kitchen cooking with his wife, or around town hanging out with family and friends.

His other full time job is being a daddy to two wonderful girls.

Master's Public Health: Columbia University, NYC. 1997
Medical School: New York University, NYC.  2001
Residency: Family Medicine at Harbor-UCLA Medical Center, Torrance, CA.  2004
Board Certified: Family Medicine 2004-2024
Acupuncture/TCM: East-West Center UCLA 2003, Academy of Pain Research 2010

Joshua Lin, D.O.

INTERNAL MEDICINE PHYSICIAN

Dr. Josh has practiced in eight states and 13 hospitals, bringing over a decade of expertise in managing complex health issues such as heart disease, COPD, obesity, hypertension, and kidney failure. His passion however is helping his patients understand and to address the underlying factors of disease such as lifestyle, stress, inflammation, and nutrition.

Having suffered from a debilitating illness as a young patient himself, Dr. Josh understands firsthand the challenges of chronic illness. Through a long personal journey of healing encompassing both traditional and alternative care, he eventually experienced miraculous healing through his faith in Jesus.

As a Christian physician, Dr. Josh has traveled extensively on medical missions to Southwest Asia - including to Taiwan, China, Myanmar, the Philippines, and Thailand. These experiences have strengthened his commitment to compassionate and culturally sensitive care, bringing him closer to diverse communities and deepening his desire to serve.

Outside of work, Dr. Josh enjoys traveling the world, exercising at the gym, and curling up with a good sci-fi novel. Being fluent in Mandarin Chinese, he also enjoys diving into classic Chinese martial arts novels by Jing Yong and keeping up with the latest Mandopop music and podcasts.

Medical School: Western University of Health Sciences/COMP, Pomona, CA. 2012
Residency:Internal Medicine at UCSF Fresno, 2015.
Board Certified: Internal Medicine 2015-current
IART Training: Regenerative Medicine.