About Us

The Integrative Wellness Center full logo

Our Mission

We use Internal and Holistic medicine to heal and nourish the mind and body. We specialize in finding the root causes of medical conditions that elude other practitioners.

Why We're Different

Our combination of Internal (Western) and Holistic (Eastern) medical knowledge is rare. This knowledge informs our unique treatment offerings and strategy.

A message from the FOUNDER

Karen Sun, M.D.

Board Certified in Internal Medicine and Integrative Holistic Medicine

Welcome! I’m Dr. Karen Sun, founder of the integrative Wellness Center in Orange County, California. I am a board-certified Internist and am also board certified in Integrative and Holistic Medicine. 

Do you suffer from fatigue, weight gain,  insomnia or moodiness after menopause? I’ve been there and was disappointed with conventional medicine’s approach to menopausal symptoms. After a lot of research, I discovered bio-identical hormone replacement therapy to be very effective. When administered via an implanted hormone pellet, treatment can reduce menopausal symptoms and also keep you feeling young and strong. 

Do you have gut issues such as irritable bowel syndrome, bloating, or indigestion? I have been there too! I  incorporated nutrition and nutraceutical treatment for gut issues and adrenal issues, as well as detoxification for weight loss into my life. I now offer the same treatments to patients. 

As stress is becoming a modern epidemic, I also focus on stress management. I help patients build healthy life styles and change negative belief systems. I’ve also added regenerative medicine such as peptide treatment to my practice.

I helped thousands of patients achieve their health goals by treating the roots, not just the symptoms. If you’re not well and have been to many doctors without finding relief, my integrative approach may be your solution! On the other hand, if you’re healthy but want to slow down the aging process, I can help you too! 

If you need further help, please don’t hesitate to make an appointment so I can design a treatment plan just for you!

Dr. Karen Sun

Dr. Sun's degrees and certifications

Fellowship: UC Irvine-Long Beach VA Hospital

Residency: Mt. Sinai Hospital, Chicago, IL

Medical School: National Taiwan University

Dr. Sun's book

Vitality Now!: A Comprehensive Guide to Anti-Aging, Rejuvenation, and Vibrant Health

Practicioner Services

Improve patients’ lives, earn more, and work less

If you’re a practitioner, we can help you accentuate your practice with training, eCommerce, marketing, and more.

Nurse Practicioner

Annie Tak, FNP-C / MSN

Nurse Practitioner Annie joined the Integrative Wellness Center team in 2019 and quickly took on the integral role of being Dr. Karen Sun’s right-hand woman in managing patient care. Annie came to the Integrative Wellness Center with a well-rounded background in both Internal Medicine and aesthetic practices. 

In addition to treating patients with bio-identical hormone replacement therapy, she also runs our Aesthetic Program using a combination of laser therapy, Platelet Rich Fibrin therapy, as well as BOTOX and JUVEDERM to help her patients achieve their aesthetic goals.

Annie enjoys pursuing physical fitness activities in her free time. She is a certified group fitness trainer and enjoys Pilates, kickboxing, and competing in marathons.

Her favorite quote is:

“Even if I knew the world was to end tomorrow, I would still plant my apple tree today!” – Martin Luther

Annie Tak

Annie's degrees and certifications

Master of Science in Nursing/Family Nurse Practitioner: University of Phoenix
Master of Arts in Psychology: Pepperdine University
Bachelor of Science in Nursing: UCLA

Start Your Wellness Journey Here

We’re standing by to help you with our unique combination of internal and holistic medicine practices. We can’t wait to meet you on your wellness journey!

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