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Longevity Optimization
Advanced biomarker analysis and personalized healthspan planning.
Perpetua Longevity
Physician-Led Longevity Medicine Designed to Optimize Healthspan.
A personalized virtual concierge medical program focused on metabolic health, hormones, weight management, cardiovascular prevention, sleep optimization, exercise performance, and evidence-based longevity medicine.
- Serving California & Nevada
- 40+ Combined Years of Clinical Experience
- Board-Certified Internal Medicine
- Board-Certified Obesity Medicine
- Stanford Certificate · Exercise Physiology
Our Philosophy
Built From the Front Lines of Critical Care.
“After years of caring for patients with advanced disease in the Intensive Care Unit, Dr. Chavez created Perpetua Longevity to help patients avoid becoming critically ill in the first place.”
Together, Dr. Juan Chavez and Dr. Lucia Mireles-Chavez bring more than 40 years of combined clinical experience. Dr. Juan Chavez spent years caring for critically ill patients in the Intensive Care Unit, where he witnessed firsthand the devastating consequences of preventable chronic disease.
In their practices, they cared for patients suffering from complications of obesity, diabetes, cardiovascular disease, hypertension, metabolic dysfunction, poor sleep, and other chronic conditions that often develop silently over decades.
We founded Perpetua Longevity with a simple mission: to help patients optimize their health before disease develops, preserve function as they age, and maximize both lifespan and healthspan through evidence-based preventive medicine.
Rather than waiting for illness to occur, we focus on identifying risk factors early, optimizing metabolic health, improving body composition, balancing hormones, enhancing sleep and recovery, and implementing personalized strategies designed to improve long-term outcomes.
Our goal is not simply to help patients live longer. Our goal is to help patients remain stronger, healthier, more energetic, and more independent throughout their lives.
Why Perpetua
Two Physicians. One Strategy. One Roadmap for Lifelong Health.
Most patients see multiple providers for hormones, weight management, hypertension, diabetes, sleep concerns, nutrition, and preventive care. Perpetua provides a physician-led longevity plan — managed by a husband and wife team — that integrates all of it.
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Personalized Medical Care
Every plan is authored by one physician who knows your full history.
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Longevity & Preventive Medicine
Intervene decades before disease — not after diagnosis.
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Advanced Biomarker Analysis
Hundreds of data points distilled into a single, legible roadmap.
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Virtual Concierge Access
Direct, secure messaging with your physician between visits.
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Evidence-Based Protocols
Treatments grounded in clinical literature, not trend cycles.
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Comprehensive Optimization
Hormones, metabolism, sleep, cognition and performance — integrated.
Credentials & Experience
Advanced Medical Expertise. Personalized Longevity Care.
With more than 40 years of combined clinical experience, Drs. Chavez and Mireles-Chavez bring traditional medical expertise together with longevity medicine, preventive medicine, metabolic optimization, exercise physiology, obesity medicine, regenerative therapies, and hormone optimization.
Board Certifications
- Internal Medicine
- Obesity Medicine
- Pediatric Medicine
Clinical Specialties
- Longevity Medicine
- Preventive Medicine
- Metabolic Health
- Diabetes Management
- Hypertension Management
- Cardiovascular Care
- Cancer Detection & Prevention
- Hormone Optimization
- Men's Health
- Women's Health
- Weight Management
- Hair Restoration
Advanced Training
- Stanford Certificate · Exercise Physiology
- Anti-Aging Medicine
- Regenerative Medicine
- Peptide Therapy
- Hyperbaric Medicine
- Stem Cell & Regenerative Therapies
- Performance Optimization
- Exercise Prescription & Human Performance
Voted Best
Men's Care Practice · Three Consecutive Years
40+ Years
Combined Clinical Experience
Trusted
By patients seeking long-term health optimization
Services
Comprehensive Longevity Medicine.
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Obesity Medicine & Weight Management
Evidence-based programs including GLP-1 therapies when medically appropriate.
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Hormone Optimization
Testosterone, estrogen, thyroid, adrenal and metabolic hormone management.
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Diabetes & Metabolic Health
Insulin resistance, diabetes, metabolic syndrome and cardiometabolic care.
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Cardiovascular Care & Prevention
Advanced cardiovascular risk assessment, blood pressure optimization, and heart health management.
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Cancer Detection & Prevention
Early cancer screening with advanced imaging, liquid biopsy, and personalized prevention strategies.
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Sleep Optimization
Assessment and treatment strategies for sleep, recovery and long-term health.
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Peptide Therapy
Customized peptide protocols when clinically appropriate.
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Hair Restoration
Comprehensive treatment for androgenic alopecia and hair preservation.
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Nutrition & Exercise Prescription
Programs to improve body composition, performance and metabolic health.
Advanced Testing
Data-Driven Precision Medicine.
Perpetua integrates advanced testing and objective health data to create personalized longevity strategies. Patients may obtain testing through qualified third-party facilities including:
- 01Comprehensive laboratory testing
- 02DEXA body composition scans
- 03VO₂ Max testing
- 04Coronary artery calcium scoring
- 05Full-body MRI
- 06Liquid biopsy / multi-cancer early detection
- 07Sleep studies
- 08Continuous glucose monitoring
All testing is reviewed, interpreted, and integrated into a personalized longevity roadmap.
Personalized Nutraceutical Programs
Physician-Guided Supplement Optimization.
Supplement recommendations are personalized using laboratory data, medical history, health goals, body composition metrics, and lifestyle factors. We utilize professional-grade nutraceuticals, including Designs for Health®.
Healthy aging
Metabolic health
Cardiovascular protection
Hormone balance
Cognitive performance
Sleep quality
Recovery & exercise performance
Hair health
Immune support
Protocols are continuously refined based on measurable outcomes and laboratory findings.
Membership
The Perpetua Longevity Membership.
Membership Includes
- Comprehensive initial consultation
- Personalized longevity roadmap
- Quarterly physician consultations
- Quarterly laboratory review
- Hormone optimization
- Obesity medicine management
- Diabetes management
- Hypertension management
- Cardiovascular care
- Cancer screening & detection
- Sleep optimization
- Peptide consultation
- Supplement recommendations
- Nutrition coaching
- Exercise prescriptions
- Secure patient messaging
- Ongoing protocol refinement
Patient Experiences
A standard of care our patients return to for decades.
★ ★ ★ ★ ★Average patient rating
At 62 years old, I've learned how to reverse much of the aging process. My VO₂ max, strength, and body composition continue to improve, and I feel better than I have in years.
After struggling with injury, declining health, and excess weight, Dr. Chavez helped me completely transform my life. Today I enjoy excellent health and remain highly active.
For more than a decade, personalized care under Dr. Chavez's guidance has been a cornerstone of my health journey.
Dr. Chavez took the time to thoroughly evaluate my health and create a clear roadmap for achieving optimal results.
Testimonials reflect individual patient experiences during prior treatment under Drs. Chavez and Mireles-Chavez. Results may vary.
Founding Physicians
A Husband & Wife Physician Team.
Dr. Juan Chavez and Dr. Lucia Mireles-Chavez lead Perpetua Longevity with more than 40 years of combined clinical experience. Their work spans Internal Medicine, Pediatrics, Obesity Medicine, Anti-Aging and Regenerative Medicine, Hyperbaric Medicine, Hormone Optimization, and Aesthetic & Sexual Wellness.
Dr. Juan Chavez's two decades caring for critically ill patients in the Intensive Care Unit inspired a proactive philosophy: prevent disease before it occurs, restore vitality, and help patients maximize both lifespan and healthspan.
Men's Health & Longevity Physician
Dr. Juan Chavez, MD
Concierge and longevity physician with two decades of Critical Care experience and advanced training in exercise physiology, metabolic health, and regenerative medicine.
- Board Certified in Internal Medicine (ABIM) — Top 10th Percentile Nationally
- Board Certified in Obesity Medicine (ABOM)
- Board Certified in Clinical Lipidology (ABCL)
- Board Certified in Anti-Aging & Regenerative Medicine (ABAARM)
- Certified Clinician, International Board of Undersea Medicine (IBUM)
- Exercise Physiologist — Stanford Medical Center
- Certified Hypertension Specialist (AHS)
- Certified Peptide Specialist
- Certified in Hair Restoration (Bauman Medical)
- Critical Care Medicine — 20+ Years Experience
- Age Management Medical Specialist
- Men's Health Specialist
Women's Health & Wellness Physician
Dr. Lucia Mireles-Chavez, MD
Board-certified pediatrician and women's health and wellness physician specializing in anti-aging, regenerative medicine, aesthetics, and family longevity care.
- Board Certified in Pediatrics (ABP)
- Board Certified in Obesity Medicine (ABOM)
- Board Certified in Anti-Aging & Regenerative Medicine (ABAARM)
- Certified Clinician, International Board of Undersea Medicine (IBUM)
- Certified in Bio-Stimulating Aesthetics (InMode)
- Certified in Hair Restoration (Bauman Medical)
- Certified in Aesthetics and Sexual Wellness (CMA)
- Women's Health & Wellness Physician
- Pediatric Medicine Physician
Membership Application
Begin your longevity blueprint.
Memberships are accepted on a limited basis. Submit an application and our team will be in touch within two business days to schedule your discovery call.
Final Step
Build Your Personalized Longevity Blueprint.
Experience physician-led longevity medicine designed to optimize healthspan, performance, vitality, and long-term wellness.