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Comprehensive and Holistic
Our focus at Hill Country Integrative Medicine is to help you on your journey to finding the root cause of your health challenges. We believe in a patient-centered approach and not a disease or symptom oriented model. We are dedicated to incorporating the most innovative treatment options into practice. We believe that given the right foundation of support, the body has the innate ability to heal.
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We focus on your individual needs, risks, and goals while helping you develop a comprehensive wellness plan. A wide variety of health issues can be addressed with a holistic approach such as: autoimmune disease, food and seasonal allergies, headache, mood disorders, diabetes, thyroid disorders, fatigue, male and female hormone imbalance, adrenal fatigue, fibromyalgia, weight problems, and digestive issues.
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We offer nutritional counseling, nutritional genetic evaluations, IV nutrition, and peptide therapy.
We consider it a privilege to be part of each of our patients' health journey. Call now and let us help you on your journey.
Our Team
Dr. Yoon Hang Kim, MD, MPH
Dr. Yoon Hang Kim began his career in family medicine before discovering his passion
for integrative medicine. He completed the prestigious Residential Fellowship with Dr.
Andrew Weil at the University of Arizona, where he was honored as an Osher Fellow,
and later received a scholarship from the Institute for Functional Medicine.
Dr. Kim is a recognized expert in Low Dose Naltrexone (LDN) therapy and has
authored multiple publications on integrative approaches to chronic pain, cancer, and
autoimmune conditions. His recent work includes research on methylene blue,
rapamycin, ketosis, and intermittent fasting.
He founded Georgia Integrative Medicine, a community-driven practice that operated
for over a decade, nurturing a new generation of integrative practitioners. Dr. Kim has
also served in leadership roles at Miami Cancer Institute, University of Kansas
(KUMC), WellMed/Optum, and Memorial Hospital.
Specific interests include: root cause medicine – complex conditions, Integrative
Functional and Lifestyle medicine, Integrative Oncology, Integrative Pain Management
(neuroanatomical approach to chronic pain), Autoimmune condition, and reversing pre-
diabetes / type 2 diabetes when possible.
With over two decades experience and leadership in Integrative Medicine, we are
excited that Dr. Kim will be joining us in September 2025.
Dr. Christa O'Leary, D.O.
Dr. O'Leary obtained a B.S. in Biology from the University of Dallas with Cum Laude honors. She chose the Texas College of Osteopathic Medicine because of its "whole person" approach. What is Osteopathic Medicine?​
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Dr. O’Leary completed an internship and residency at Scott and White Memorial Hospital, located in Temple, Texas. She completed her board certification in Family Medicine and practiced in Colleyville, TX for eight years.
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After a few years in practice, the frustration Dr. O'Leary experienced with the current U.S. medical model led her to search for alternative methods of care. She practiced in New Zealand and was introduced to native Maori medicinal plants, mind-body practices, and holistic care.
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Upon return to the U.S., she sought out functional, regenerative, and integrative medicine courses and obtained a board certification from the Academy of Integrative Health and Medicine.
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This journey through varied health and medical models, along with an insatiable desire to learn new things, has created the framework for Dr. O'Leary's practice. It's through prayer and divine wisdom which empowers the healing journey of our patients.
Christina Exum, APRN, PMHNP-BC
Christina obtained a BSN in Nursing from Schreiner University and an
MSN from UTSA, graduating magna cum laude. As a Nurse Practitioner,
Christina brings a wealth of experience and a true holistic approach to
health.
Mood, anxiety, sleep, focus, motivation, and emotions are deeply
influenced by the inflammation, metabolic health, gut function, immune
signaling, hormonal balance and nervous system regulation. Christina's
approach to Integrative Mental Health includes a thoughtful evaluation that
considers emotional symptoms alongside physiologic contributors with
attention to nervous system-informed and trauma-aware care. It is care
that supports a functional understanding of mood with emphasis on the
importance of meaning, purpose, and the emotional and spiritual
dimensions of healing, recognizing that these are often central to long-term
well-being.
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Charity Lawson, M.S., CNS
Charity Lawson is a Clinical Nutritionist and holds a Master’s Degree in Human Nutrition from the University of Bridgeport, CT. She specializes in a Functional Medicine approach for creating individualized nutrition prescriptions for her clients. She knows what it is like to be a patient herself and strives to offer her clients a safe and personalized experience. She is passionate about helping others unleash the power of diet and lifestyle to heal the body.
Why Integrative Medicine?
We can help with
Digestion
Better digestion means better energy! Give your body the tools it needs to regenerate and grow.
Fatigue
Sick and tired of being sick and tired? Your body is trying to tell you something.
Detoxification
We help you prevent chronic disease by being proactive. Say hello to long-lasting vitality and goodbye to modern-day toxins.
Hormonal Balance
There's plenty of reasons our hormones get out of balance. Together we'll get to the bottom of it so you can feel energized, sleep better, and get rid of those pesky mood swings.
Weight Loss
Maintaining a healthy weight not only helps you look your best, but FEEL your best.
Stress
High stress means high cortisol, which can lead to hypertension, diabetes, obesity, and more.
Services
Nutritional Genetic Testing
Ever wonder why your weight is vastly different from your friend’s but you eat very similarly? Or why do you have diabetes and your neighbor does not despite poor eating habits? What about the differences we see in how we tolerate stressful events?
All of these questions are influenced by our unique genetic variations.
Full Spectrum Infrared Sauna
We live in a toxic world. Some toxins we can avoid, while others we can't. It's never been more important to support your body in its natural detoxification efforts. Regular infrared sauna sessions are beneficial for any wellness regimen.
Nutrition Services
The focus of our nutrition program is to address the root cause of a person's health issue rather than focusing on a diagnosis. We are dedicated to formulating personalized nutrition protocols based on a person's biochemical individuality.
Supplements & Vitamins
Not all supplements are created equal. As a service to our patients, we curate the highest of quality. Check out our top picks or have your vitamins shipped to your door.
IV Therapy & Injections
Scientific studies tell us that most of us are depleted in essential nutrients, vitamins and minerals, which may be due to the immense amount of toxins we are exposed to daily. Through IV Therapy and Injections, we help replenish the essential nutrients you need for weight loss and optimal health.
Advanced Lab Testing
We work diligently to help each patient obtain the testing they need to find answers, at the best price available for each situation. Together we discover the inner-workings of your body, and what therapies would be most beneficial.