Discovering San Antonio Functional Medicine with Dr. Kim

Functional Medicine in San Antonio: A Root-Cause Approach with Yoon Hang Kim, MD, MPH

Board-Certified in Preventive Medicine | Integrative & Functional Medicine Physician

If you've spent years cycling through specialists, tests, and prescriptions — and you still don't feel well — the problem may not be you. It may be the model of care. Conventional medicine excels at acute crises, but chronic, complex illness often demands a different question: not "What is the diagnosis?" but "Why is this happening in the first place?"

That question is the foundation of functional medicine, and it's the question Yoon Hang Kim, MD, MPH has spent more than two decades answering for clients with conditions that don't fit neatly into a fifteen-minute visit.

Why Root Cause Matters

Symptoms are signals, not the disease itself. Fatigue, brain fog, chronic pain, digestive distress, and recurring inflammation are downstream effects of underlying imbalances — immune dysregulation, hormonal disruption, gut dysfunction, environmental exposures, or chronic stress physiology. Suppressing the signal without addressing the source is why so many people feel stuck.

Functional medicine works differently. It examines how your body's systems interact, then builds a plan around your biology, history, and life — not a protocol designed for the average patient who doesn't actually exist.

Who This Approach Serves Best

Dr. Kim's practice focuses on the conditions where root-cause medicine offers the most leverage:

• Autoimmune conditions — including low-dose naltrexone (LDN) therapy, an area where Dr. Kim has published and lectured extensively

• Mast Cell Activation Syndrome (MCAS) and complex multi-system illness

• Fibromyalgia and chronic fatigue syndrome

• Chronic pain — integrating medical acupuncture (UCLA certification) with modern pharmacology

• Mold toxicity and environmental illness

• Integrative oncology support — care alongside, never instead of, your oncology team

What Working with Dr. Kim Looks Like

Time, first. The practice is deliberately capped at a small number of active clients. That structural choice means consultations are unhurried, follow-up is real, and your case gets the sustained attention complex illness requires. This isn't a marketing claim — it's how the practice is built.

A thorough investigation. Your first visit involves a detailed health history and, where appropriate, advanced testing to identify hidden drivers: inflammation markers, hormonal patterns, gut dysfunction, or nutrient deficiencies.

A personalized, evidence-informed plan. Nutrition, targeted supplementation, stress physiology work, and conventional treatments when they're the right tool. Integrative medicine is not alternative medicine — it's using the full toolkit, judiciously.

A partnership. You are the central actor in your own recovery. Dr. Kim's role is to bring twenty-plus years of clinical judgment to your side of the table — and to adjust the plan as your body responds.

Why Membership-Based Care Changes Everything

Most of what frustrates people about healthcare — rushed visits, surprise bills, months-long waits, playing phone tag through a portal — isn't caused by bad doctors. It's caused by the insurance-driven volume model, where a physician must see 25–30 patients a day to keep the lights on.

Membership-based direct care removes that constraint entirely. Here's what that means for you in practice:

Time that matches the complexity of your case. With the practice capped at 99 active clients — compared to the 2,000–2,500 a typical insurance-based practice carries — visits are as long as your situation requires. Complex illness cannot be untangled in twelve minutes.

Direct access to your physician. Questions between visits go to Dr. Kim, not a triage queue. When you're adjusting an LDN dose or managing an MCAS flare, that responsiveness isn't a luxury — it's clinically meaningful.

Complete price transparency. A flat monthly membership and a published fee schedule. No surprise bills, no coding games, no wondering what a visit will cost.

No insurance middleman in clinical decisions. Treatment plans are built on what your case needs — not on what a payer will authorize. That independence is precisely what makes genuine root-cause work possible.

Continuity and telemedicine convenience. Care continues wherever you are in Texas, with licensure across six states for clients who travel or relocate. Your physician knows your full story because he's the one who's been following it.

For San Antonio clients managing chronic conditions, this model often costs less than the out-of-pocket total of copays, deductibles, and lost time in a conventional system — while delivering a fundamentally different level of attention.

Experience You Can Verify

Credentials matter when you're trusting someone with a complex case. Dr. Kim completed fellowship training in integrative medicine at the University of Arizona under Dr. Andrew Weil, is board-certified in Preventive Medicine and in Integrative & Holistic Medicine, and has held leadership roles including Medical Director of Integrative Oncology at Miami Cancer Institute and Enterprise Medical Director at Optum. He founded and ran Georgia Integrative Medicine for a decade, has authored three books and more than twenty peer-reviewed articles, and now serves clients in Texas — including the San Antonio area — through www.directintegrativecare.com.

Taking the First Step

Chronic illness rewards preparation and boldness in equal measure. If you're ready to stop managing symptoms and start investigating causes:

1. Review the membership tiers and published fee schedule at www.directintegrativecare.com — everything is transparent before you commit

2. Schedule an initial consultation and bring your full story — prior records, failed treatments, and all

3. Expect a genuine investigation, not a quick fix — and a physician who will tell you honestly what integrative medicine can and cannot do for your situation

Because membership is capped at 99 active clients, enrollment depends on current availability. If a spot is open when you're ready, that timing works in your favor.

Your health story isn't finished. Sometimes it just needs a better editor.

About Dr. Kim

Dr. Yoon Hang "John" Kim is a board-certified physician with over 20 years of experience in integrative and preventive medicine. He completed his fellowship at the University of Arizona under Dr. Andrew Weil and holds certifications in preventive medicine, medical acupuncture, and integrative & holistic medicine. Dr. Kim specializes in low-dose naltrexone (LDN) therapy, autoimmune conditions, chronic pain, integrative oncology, fibromyalgia, chronic fatigue syndrome, MCAS, and mold toxicity. He is the author of three books and more than 20 peer-reviewed articles.

Professional: www.yoonhangkim.com | Clinical: www.directintegrativecare.com