Root-Cause Medicine for Balance, Vitality & Longevity

At De Leon Precision Medicine, we help you get to the root of fatigue, hormone imbalance, brain fog, gut issues, and metabolic concerns—so you can feel like yourself again. Led by Dr. Marilin De Leon, a board-certified physician with advanced training in functional and precision medicine, we offer deeply personalized care that’s guided by data, backed by science, and delivered with heart.

Whether you’re navigating perimenopause, struggling with energy crashes, or ready to age with strength and clarity—we’re here to listen, investigate, and guide you toward lasting wellness.


 That Treats the Whole You

Boutique Precision Medicine

support your wellness journey.

Board certified physician with advanced training through the American Academy of Anti-Aging & Regenerative Medicine and Columbia University’s Obesity Medicine program. She combines the precision of modern diagnostics with the compassion of whole-person care—helping you feel seen, heard, and truly supported at every step of your health journey.

Dedicated professional ready to

Longevity & Anti-Aging Support

Hormone Health & Optimization

Metabolic & Weight Optimization

Discover a personalized suite of functional and precision medicine services—designed to restore balance, optimize metabolism, support healthy aging, and help you feel your best at every stage of life. Whether you're seeking hormone optimization, gut healing, our care plans are customized to your biology, lifestyle, and long-term wellness goals.

Where Medical Expertise Meets Personalized, Root-Cause Healing 

Explore our services

The Link Between Inflammation and Weight Gain—And How to Break the Cycle


How to Support Hormonal Health During Every Decade of Life

5 Signs Your Gut Is Out of Balance And What to Do About It



Simple Sleep Tweaks to Improve Mood & Mental Clarity


Featured Blog Posts:

Expert insights, practical wellness strategies, and heartfelt advice—rooted in integrative medicine and designed for real life. Explore tips, education, and inspiration from Dr. De Leon to help you take control of your health with clarity and confidence.

The De Leon Resource Library

Dr. De Leon bring an incredible blend of medical expertise and heartfelt connection. She took the time to listen, understand my concerns, and create a plan that finally made sense for my body. This isn’t just a boutique—it’s a place where healing actually begins.”

"Walking into Dr De Leon' s office feels like stepping into a space where you’re truly seen and cared for.

J.Martines

working with Dr. Marilin was a turning point. She looked beyond the surface, listened deeply, and helped me uncover the real reasons behind my symptoms. For the first time, I feel in control of my body—and proud of the progress I’ve made.”

"After years of struggling with my weight and feeling like no one truly understood what was going on, 

– A.Medeiros

Board Certifications & Advanced Training

Behind every badge is a dedication to better outcomes, deeper listening, and medicine that meets you where you are.

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We combine cutting-edge lab testing, advanced diagnostics, and evidence-based integrative therapies to craft care plans that align with your biology, lifestyle, and goals. We take time to educate, guide, and support you—because healing happens best when you’re not rushed or unheard.