How membership-based integrative and functional medicine works — and whether it's right for you Written and medically reviewed by Yoon Hang Kim, MD, MPH Board-Certified in Preventive Medicine | Integrative & Functional Medicine Physician Based in San Antonio, Texas · Virtual practice serving TX, IA, IL, MO, FL, and GA www.directintegrativecare.com Last updated: August 2026 Medical Disclaimer: This article is for educational and informational purposes only. It does not constit