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Medicine Before You Need It.
Understand your health.
Perform at your best.
Keep doing what matters most.
Maine Performance & Longevity Center is a membership-based medical practice for men, focused on proactive, personalized healthcare that helps you better understand risk, support performance, and make informed decisions about your long-term health.
One providerObjective answersA plan built around you
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Healthspan, not hype.Better health for the life you want to live.
Start with what you’re noticing
Does something feel different
or off?
Your symptoms don’t come with a diagnosis attached. We look at the whole picture before recommending what comes next.
Low energy
Tired even when you’re getting enough sleep?
→
Low drive
Motivation or focus not what it used to be?
→
Body changes
Doing the same things—but getting different results?
→
Poor recovery
Taking longer to bounce back?
→
Poor sleep
Sleeping—but not waking refreshed?
→
Sexual health
Changes in libido or performance?
→These concerns are common. Their causes aren’t always obvious. That’s why we measure before we treat →
Don’t Have Symptoms? Even Better.
Know Your Numbers.
Understand Your Risks.
Optimize Your Health.
You don’t have to wait until something is wrong to understand your health. Establish a meaningful baseline, identify modifiable risks and opportunities, and track what changes over time.
Explore proactive care
Cardiovascular risk
Metabolic health
Body composition
Hormonal health
Strength & fitness
Advanced biomarkersThe MPLC difference
We don’t start with treatment.
We start with answers.
A thoughtful, five-step process turns your history, measurements, and goals into a plan you can understand—and progress you can actually follow.
01
02Measure
Establish your baseline with vitals, advanced body composition analysis, strength testing, advanced labs, and diagnostics when appropriate.
03Understand
Review what your results mean in context—not simply whether they fall inside a reference range.
04Plan
Create an individualized strategy for nutrition, training, sleep, recovery, and medical treatment when appropriate.
05Optimize
Measure, adjust, and repeat through quarterly evaluations so your plan can evolve with you.
Advanced body composition
See what the scale can’t show.
Weight is only one number. The InBody 580 provides a more complete picture of your body composition—helping us understand muscle, body fat, visceral fat, and how those measurements change over time.
- Understand muscle and lean-mass distribution
- Measure body-fat percentage and visceral fat
- Track meaningful changes over time
Zac Greenier and family
Meet Your Provider
Why I Started MPLC
Zac Greenier PA-C, MMSc
After graduating from the Yale University School of Medicine Physician Associate Program, I returned to the Bangor area, where I have practiced internal medicine since 2013. I have seen firsthand the value of strong, evidence-based medical care—and recognized that many people want more time, a clearer picture of their risks, and a proactive medical relationship.
I created Maine Performance & Longevity Center to provide that kind of care.
My goal is to build a long-term partnership with each patient. By combining your history and goals with objective measurements, advanced laboratory testing when appropriate, and evidence-based medicine, we can identify risk, address opportunities, and follow your progress over time.
Ultimately, this isn’t about chasing numbers or promising a longer life. It’s about helping you remain healthy, capable, and engaged in the life you want to live—for as long as possible.
Personalized attentionAdvanced testingLongitudinal relationshipScience, not hype
A clear way to begin
Start with answers. Continue with a plan.
No hidden pricing and no treatment recommendation before a comprehensive evaluation.
Your first step
Executive Health Consultation
$450
- 60-minute comprehensive assessment
- Health history, concerns, and goals
- Vitals and baseline measurements
- Advanced body composition analysis
- Grip strength assessment
- Personalized laboratory recommendations
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Ongoing relationship
MPLC Membership
$150/month
- Quarterly in-office provider visits
- Repeat InBody 580 body composition analysis
- Ongoing review and optimization of your personalized care plan
- Secure patient portal access for questions related to your care
- Guidance related to medications, supplements, nutrition, and physical activity
- Follow-up laboratory testing when clinically appropriate*
*Laboratory testing, medications, supplements, and services provided outside MPLC are not included in the membership fee.
Built for how you live
Helping People Live Better. Stronger. Healthier. For Longer.
Have energy left after work.
Stay strong enough to keep doing what you love.
Keep up with the people who matter.
Perform at your best—on and off the course.
Protect your health for the long run.
Stay sharp. Stay focused.
“I want my patients to understand their health, know their risks, and have a clear plan for what they can do about them. Most importantly, I want to build the kind of medical relationship that allows us to work toward those goals together over time.”
Zac Greenier, PA-C, MMSc
Personalized. Proactive. Built around you.
Your health deserves more than a yearly checkup.
Begin with a conversation and a clearer understanding of where you are today.
Schedule your consultation