A Physician-Led Longevity Medicine Program Designed to Help You Live Better, Longer

Most healthcare begins after symptoms appear. Longevity medicine takes a different approach. EnVital's Premier Longevity Program uses advanced diagnostics, evidence-based medicine, hormone optimization, nutrition, and personalized preventive care to help optimize your healthspan—the years you live feeling healthy, active, and independent.

EnVital Premier Longevity Program

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What Is Longevity Medicine?

Most people think about health in terms of chronological age—the number of birthdays they've celebrated. But two people the same age can have dramatically different health, energy levels, and disease risk.

Longevity medicine focuses on biological age—how well your body is actually functioning—and identifies opportunities to improve long-term health before problems develop. Rather than simply treating disease, longevity medicine helps optimize the systems that influence how you age.

Longevity medicine asks, "How well can I live?"

Instead of asking, "How long will I live?"

Our goal is to help you maintain:

Energy
Mental clarity
Muscle strength
Healthy metabolism
Cardiovascular health
Hormonal balance
Independence as you age

The Science Behind Healthy Aging

Healthy aging is influenced by interconnected biological processes, including:

Chronic inflammation
Cellular energy production
Metabolic health
Hormonal balance
Sleep quality
Muscle preservation
Cardiovascular function
Cognitive health

At EnVital, we focus on the factors that can meaningfully improve long-term health—not simply chasing the latest wellness trends.

What Your Evaluation Includes

We review your medical history, medications, lifestyle, family history, and health goals to understand the complete picture of your health.
Rather than ordering every available test, we focus on biomarkers that provide meaningful insight into your metabolism, cardiovascular health, hormone balance, inflammation, and overall wellness.
Hormones influence energy, metabolism, recovery, mood, sleep, muscle mass, and cognitive performance. When appropriate, hormone optimization may be incorporated into your personalized longevity plan.

Your nutrition, movement, sleep, and stress management strategies are tailored to support healthy aging and long-term resilience.
You'll leave with an evidence-based roadmap designed specifically for your health goals—not a generic wellness checklist.

What Makes EnVital Different

We believe in ordering the right tests—not every test. Our objective is simple: Identify what matters most—and build a personalized plan around it.

  
      Traditional Medicine
      EnVital Longevity Medicine
    
        Treats illness after symptoms appear
      
        Identifies opportunities before problems develop
      
        Focuses on individual symptoms
      
        Evaluates the whole person
      
        Uses standard recommendations
      
        Creates a personalized health plan
      
        Reactive approach
      
        Proactive and preventive approach
      
        Limited ongoing monitoring
      
        Tracks progress and adjusts recommendations

Medical & Leadership Team

Andrew Lenhardt, MD

Medical Director | Board-Certified Physician

Dr. Andrew Lenhardt is a board-certified physician with more than 25 years of experience in functional, integrative, and longevity medicine. He serves on the faculty of Tufts University School of Medicine, Yale University, and Endicott College. He is also the author of three books and developed the clinical algorithms behind the RootFinder™ tool.
Michael J. Zachareas, MD

Board-Certified Urologist | Founder, New England Urology
Dr. Michael J. Zachareas ("Dr. Z") is a board-certified urologist with more than 25 years of clinical experience. He specializes in men's health, infertility, kidney stone disease, erectile dysfunction, and minimally invasive urologic care. His patient-centered approach has made him a trusted leader in the field.
Amanda Lewis

Managing Partner
Amanda Lewis brings more than 20 years of leadership experience in healthcare, finance, and business management to EnVital. She is passionate about building exceptional patient experiences and driving innovation in personalized healthcare. Amanda believes proactive, physician-led care empowers people to live healthier, longer, and more fulfilling lives.
Marnie Lawler

Functional Nutritionist & Health Coach

Marnie Lawler specializes in metabolic health, hormone balance, and longevity-focused lifestyle medicine. As a Certified Functional Nutritional Therapy Practitioner and Master Restorative Wellness Practitioner, she creates personalized nutrition and wellness plans to help clients optimize their health. A former collegiate swimmer and certified personal trainer, she is passionate about helping people build resilience and improve their healthspan.