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Welcome to Hill Country Integrative Medicine
At Hill Country Integrative Medicine, we believe in a patient-centered approach that focuses on finding the root cause of an individual's health challenges. We utilize the latest, evidence-based therapies, standard and specialized lab testing, and work collaboratively with each patient to develop a plan and work towards optimizing health.
Our Practitioners
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.
Dr. Christa O'Leary, D.O. – Dr. O'Leary received her initial board certification in Family Medicine after completing residency at Scott and White Memorial Hospital in Temple. She completed additional board certification in Integrative and Holistic Medicine. She has been in practice for 20 years.
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.
Charity Lawson CN, MS – Clinical Nutritionist - Charity has been seeing clients at HCIM since 2018. She received her Masters in Human Nutrition through the functional medicine nutrition program at the University of Bridgeport. She has extensive knowledge in understanding how nutrition, diet, and lifestyle impact health.
If you have additional questions or would like to book an appointment, call (830) 992-3042.