Finding Functional Medicine Expertise in San Antonio, TX: Your Guide to san antonio functional doctors

Why Choose Yoon Hang Kim, MD, MPH for Functional Medicine in San Antonio

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

www.directintegrativecare.com

If you have been searching for a functional medicine doctor in San Antonio, you have probably noticed that every clinic's website sounds the same: root cause, personalized care, advanced testing. Those are the right words — but words alone do not tell you whether a provider will actually deliver the depth of expertise, accessibility, and sustained partnership your health requires. This post explains why Dr. Yoon Hang Kim's membership-based, insurance-free practice stands apart from the crowd — and why a concierge model may be exactly what chronic-illness care demands.

Table of Contents

1. The Problem with the Standard Functional Medicine Search

2. Who Is Yoon Hang Kim, MD, MPH?

3. The Membership Model: Why It Matters

4. Market-Rate Pricing, Far Beyond Market-Rate Access

5. Telemedicine Reach Across Multiple States

6. Comparing Care Models

7. Who Benefits Most from This Practice?

8. What Sets This Apart in San Antonio

9. Key Takeaways

10. Frequently Asked Questions

11. Taking the Next Step

The Problem with the Standard Functional Medicine Search

A quick search for "functional medicine San Antonio" returns dozens of results. Many are large multi-provider clinics running high-volume schedules. Others are cash-pay practices that still rely on per-visit billing, meaning your access to your doctor depends on whether you can book the next available slot — often weeks out. In both models, the relationship is transactional: you buy an appointment, you receive a service, and between visits you are largely on your own.

For people with complex, overlapping conditions — autoimmune disease, mast cell activation syndrome (MCAS), chronic fatigue, mold toxicity, POTS, or fibromyalgia — that episodic model falls short. These conditions do not wait for your next scheduled appointment. Questions surface between visits, lab results need interpretation in real time, and treatment plans require continuous fine-tuning. The gap between what clients need and what most practices deliver is where Dr. Kim's model fills a critical void.

Who Is Yoon Hang Kim, MD, MPH?

Dr. Kim brings more than 20 years of clinical experience in integrative and functional medicine. His training includes an Osher Fellowship under Dr. Andrew Weil at the University of Arizona Center for Integrative Medicine — widely considered the gold standard in integrative medical education. He holds board certifications in Preventive Medicine and Integrative & Holistic Medicine, a medical acupuncture certification from UCLA, and IFM (Institute for Functional Medicine Scholarship Recipient.

His clinical expertise spans complex chronic illness including autoimmune conditions, MCAS, mold toxicity and CIRS, chronic fatigue syndrome, fibromyalgia, POTS, integrative oncology, and low-dose naltrexone (LDN) therapy. Dr. Kim is an internationally recognized authority on LDN, having authored multiple books on the subject — including the clinician textbook LDN for Clinicians, Researchers, and Empowered Patients — published over 20 peer-reviewed articles, and founded the LDN Support Group, a community of more than 9,000 members. He has previously served as Medical Director of Integrative Oncology at Miami Cancer Institute and as Director of the Integrative Medicine Program at the University of Kansas Medical Center.

Dr. Kim's depth of training, clinical volume, and academic contributions place him among the most credentialed integrative and functional medicine physicians practicing in Texas today.

The Membership Model: Why It Matters

The practice at www.directintegrativecare.com operates on a membership model — sometimes called direct primary care or concierge medicine — rather than conventional fee-for-service billing. Here is what that means in practice:

● Capped panel size. Dr. Kim limits his active client panel to 99 individuals. A typical primary care physician manages 2,000 to 3,000 clients; most concierge practices cap between 300 and 600. A smaller panel translates directly into longer visits, faster responses, and a physician who actually knows your case — not just your chart.

● Predictable monthly investment. Rather than being surprised by per-visit charges or unpredictable insurance co-pays, members pay a flat monthly fee that covers ongoing access to Dr. Kim. Full details are available on the fee schedule. This transparency eliminates the financial uncertainty that discourages many people from seeking the care they need.

● Insurance-free by design. The practice does not bill insurance. While that may sound counterintuitive, it is actually liberating — for both the client and the physician. Insurance dictates visit length, limits which tests can be ordered, and often delays referrals. Removing the insurance middleman means Dr. Kim can spend the time a case requires, order the labs a case demands without payer restrictions, and pursue the treatment strategy that serves the client rather than the payer.

● Continuous access, not episodic care. Membership means the relationship does not end when the visit does. Clients have ongoing communication access for questions, lab interpretation, and care coordination. This continuity is especially critical for conditions that fluctuate — like MCAS flares, hormonal shifts, or post-infectious syndromes — where waiting weeks for a follow-up appointment can mean unnecessary suffering.

Market-Rate Pricing, Far Beyond Market-Rate Access

Most concierge and membership practices limit their panels to somewhere between 300 and 600 clients. Even practices charging well above the national median typically cap between 200 and 400. Dr. Kim caps his panel at 99.

That is the number that matters. Membership pricing at this practice sits within the ordinary national range for concierge and direct-care medicine — roughly $250 to $350 per month, with current tiers detailed on the fee schedule. What is not ordinary is what that fee buys: a panel three to six times smaller than the concierge norm. Fewer clients per physician is the structural variable that determines whether "personalized care" is a slogan or a daily reality.

This is a deliberate philosophical choice. Dr. Kim's guiding principle is that sustainable health outcomes require a long-term partnership, not a one-off encounter. Building the practice around a small panel rather than around volume is what allows him to give each client the depth of attention their condition requires — and it is why membership is capped rather than open-ended.

Telemedicine Reach Across Multiple States

While Dr. Kim is based in San Antonio, the practice is built on a telemedicine-forward model that extends well beyond city limits. Dr. Kim holds active medical licenses in Texas, Iowa, Illinois, Missouri, Georgia, and Florida, enabling him to serve clients across a significant geographic footprint. Whether you are in Houston, Atlanta, Des Moines, or Jacksonville, you can access the same unhurried, membership-based care as someone sitting in Alamo Heights.

For individuals outside these states or outside the United States, Dr. Kim also offers Educational Consultation Agreements — structured 30-minute video sessions that provide guidance within appropriate professional boundaries. This means that even if licensure limitations prevent a formal clinical relationship, you are not entirely shut out from Dr. Kim's expertise.

Comparing Care Models

The table below outlines how this practice differs from the two most common alternatives a San Antonio client is likely to encounter.

Feature	Insurance-Based Primary Care	Typical Concierge	Membership (This Practice)
Panel size	2,000–3,000 clients	300–600 clients	Capped at 99
Visit length	10–15 minutes	30–60 minutes	Extended, unhurried
Access between visits	Phone tag / portal	Direct, varies	Ongoing direct access
Billing model	Insurance + copays	Membership, often + insurance	Flat monthly, insurance-free
Care focus	Symptom management	Enhanced primary care	Root-cause, longitudinal
Complex chronic illness fit	Limited	Varies by provider	Built for it

Who Benefits Most from This Practice?

Dr. Kim's practice is not designed to be all things to all people. It is specifically built for individuals who have complex, chronic health challenges and who have often felt failed by conventional medicine. If any of the following resonate, this model may be the right fit:

● You have been through multiple specialists without clear answers or meaningful improvement.

● You have an autoimmune diagnosis — or suspect one — and want a provider who looks beyond immunosuppression as the only strategy.

● You are dealing with MCAS, POTS, mold illness, chronic fatigue, or fibromyalgia and need a physician experienced with these specific conditions.

● You are a cancer survivor or active oncology client seeking integrative support alongside conventional treatment.

● You are interested in LDN therapy and want guidance from one of the foremost clinical experts in the field.

● You value a physician relationship built on partnership and communication, not assembly-line medicine.

What Sets This Apart in San Antonio

San Antonio has a growing number of integrative and functional medicine providers, and many are doing good work. But there are meaningful differences worth noting:

● Depth of specialization. Many functional medicine practices take a generalist approach — broad wellness optimization. Dr. Kim's practice is oriented toward complex chronic illness, which requires a different clinical skillset, a different testing philosophy, and a different tolerance for diagnostic ambiguity.

● Academic and research foundation. With over 20 peer-reviewed publications, multiple books, and national-level speaking engagements, Dr. Kim's clinical decisions are grounded in evidence — not trends. When he recommends a protocol, it is backed by literature he has personally evaluated and, in many cases, contributed to.

● Panel size discipline. It is easy for a practice to claim "personalized care." It is much harder to enforce the structural constraints — like a 99-client cap — that make personalized care actually possible. This is a practice that has chosen to stay small on purpose.

● Continuity and relationship. In a membership model, Dr. Kim is your physician over months and years, not for a single consultation. He tracks your trajectory, remembers your history, and adjusts your plan as your life and body change. That longitudinal relationship is where the real clinical value lives.

Key Takeaways

● Root-cause, longitudinal care. The membership model means a capped panel, direct access, and a physician relationship measured in years, not visits.

● Insurance-free is liberating. Removing the payer removes restrictions on visit length, testing, and treatment strategy.

● Built for complexity. Autoimmune disease, MCAS, POTS, mold illness, integrative oncology, and LDN therapy are core areas of expertise.

● Reach across six states. Telemedicine care in TX, IA, IL, MO, GA, and FL, plus educational consultations for those elsewhere.

● Typical fee, atypical panel. Membership pricing sits in the ordinary concierge range, but the panel is capped at 99 rather than the customary 300 to 600.

● Get started. Call or text (210) 981-6106, or visit www.directintegrativecare.com.

Frequently Asked Questions

What does the membership include? Membership covers ongoing access to Dr. Kim — extended visits, communication between appointments, lab interpretation, and care coordination — under a flat monthly fee. Specific inclusions by tier are listed on the fee schedule.

Do you take insurance? No. The practice is insurance-free by design, which allows Dr. Kim to determine visit length, testing, and treatment based on what your case requires rather than what a payer will authorize. Clients may still use insurance independently for outside labs, imaging, or medications.

Can I see Dr. Kim if I live outside Texas? Yes, if you are in Iowa, Illinois, Missouri, Georgia, or Florida, where Dr. Kim is also licensed. For those outside these states or abroad, Educational Consultation Agreements offer a structured way to access his guidance within professional boundaries.

How does the cost compare to other concierge practices? Membership here sits within the ordinary national range for concierge and direct-care medicine. The difference is not the price — it is the panel. Most concierge practices carry 300 to 600 clients per physician; Dr. Kim caps at 99. You are paying a typical membership fee for a substantially smaller panel and correspondingly greater access. Current tiers are listed on the fee schedule.

How do I get started? Call or text (210) 981-6106, or visit www.directintegrativecare.com to review membership options and begin with a virtual assessment.

Taking the Next Step

If you are ready to move beyond symptom management and invest in a physician relationship built for the long haul, Dr. Yoon Hang Kim's practice may be the partnership you have been looking for. Call or text (210) 981-6106, or visit www.directintegrativecare.com to review membership options, see the fee schedule, and take the first step toward care designed around you — not around an insurance company's priorities.

Disclaimer: This blog post is for educational and informational purposes only and does not constitute medical advice, diagnosis, or treatment. The information provided should not replace a consultation with a qualified healthcare provider. Individual results may vary. If you have questions about your health, please consult a licensed physician.

https://youtu.be/qNxc1mc9yA8?si=ZNQoez68xV9UN9MX

About Dr. Kim

Dr. Yoon Hang "John" Kim is a board-certified physician with more than 20 years of experience in integrative and functional medicine. He completed his fellowship training at the University of Arizona Center for Integrative Medicine under Dr. Andrew Weil and holds certifications in preventive medicine, medical acupuncture (UCLA), and integrative & holistic medicine, along with IFM Scholar status. Dr. Kim specializes in low-dose naltrexone (LDN) therapy, autoimmune conditions, chronic pain, integrative oncology, fibromyalgia, chronic fatigue syndrome, mast cell activation syndrome (MCAS), and mold toxicity. He has authored 3 books, published over 20 peer-reviewed articles, and founded the LDN Support Group with more than 9,000 members.

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