Three plans.
One Lifetime Body Score.
Lifetime Performance Medicine is a physician-led longevity practice in Los Gatos, California. Every membership is built around three things: comprehensive diagnostics, a single Lifetime Body Score that maps how your body performs across six domains, and a 12-month plan your physician adjusts as you progress.

Why Members Start at Lifetime
Most longevity clinics in the Bay Area test you once a year and hand you a PDF. Function Health gives you the data. We give you the data, the score, the plan, and the year of physician oversight to make it happen. The three tiers below differ in depth and frequency, not in care quality. Pick the one that fits where you are today.
How to Choose Your Tier
Three tiers, same diagnostic backbone. Pick the depth and frequency that fit where you are right now.
Foundations for your first complete picture
Foundations for your first complete picture
Foundations for your first complete picture
If you've never had a comprehensive diagnostic baseline, Foundations is your starting line. Five care visits across the year, the full universal lab panel with 80+ biomarkers, functional testing, and your biological age via PhenoAge. The full diagnostic snapshot that most people in their 30s and 40s have never had.
Optimization for active improvement
Optimization for active improvement
Optimization for active improvement
Six care visits, mid-year labs at month three and month six, DEXA scanning, direct VO2 max testing, continuous wearable tracking, and PhenoAge recalculated four times across the year. Built for people who want their physician working from real data all year long, not from a once-a-year snapshot.
Executive for precision longevity
Executive for precision longevity
Executive for precision longevity
Everything in Optimization, plus Galleri multi-cancer early detection, epigenetic age testing alongside PhenoAge, and DEXA at multiple high-value checkpoints. The most thorough longevity program we offer.
Personalized Programs For Every Stage Of Health
Foundations
Optimization
Executive
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What's Included in Every Tier
- 80+ biomarker comprehensive lab panel (hormones, metabolic, inflammatory, cardiovascular, nutrient status, heavy metals).
- Functional testing (grip strength, sit-to-stand, plank).
- Body composition analysis.
- VO2 measurement (calculated for Foundations, direct for Optimization and Executive).
- Biological age via PhenoAge
- A personalized 12-month plan built and adjusted by your physician.
- Two visits per year directly with Dr. Richard Nguyen.
Pricing Transparency
Foundations starts at $4,500 per year. Optimization and Executive are custom plans set during your consultation based on the depth and frequency you choose. We design every plan transparently with you before you commit.

Answers To Common Questions
We believe in transparency. Here are answers to the most common questions about our approach and programs.
Lifetime is a membership-based program and isn't billed through insurance. Many lab and diagnostic costs may still be reimbursable depending on your plan, and HSA or FSA funds can typically be used.
No. Lifetime works alongside your existing primary care. We focus on optimization, performance, and longevity, and share findings with your PCP when relevant.
Initial assessments run 90 minutes. Follow-up visits average 45 to 60 minutes. Every visit is one-on-one with your physician, never rushed.
Most members see early markers shift within the first three months. The full 12-month plan is built to drive measurable improvement across all six Body Score domains.
Yes. Memberships are annual, but you can pause or cancel by speaking with our team. We'll always walk you through your options first.
Our clinic is in Los Gatos, California. All testing, visits, and diagnostics happen on-site.
