Age Well. Live with Vigor. Thrive.

Welcome to GenAge Center, a leading physician-directed clinic in Ada, Michigan, specializing in longevity and wellness for men and women. Here at the GenAge Center, we will help you strengthen your vitality, mental clarity, physical performance, and metabolic balance through advanced diagnostics and personalized wellness therapies.

Conveniently located at 6745 Fulton St E, Ada, MI 49301, we proudly serve the Greater Grand Rapids area, including Cascade, Forest Hills, East Grand Rapids, Lowell, Rockford, and Kentwood. GenAge also has patients as far west as Arizona and California, and as far south as Florida and Texas.

Ready to take the first step toward lasting energy, better health, and optimal performance? Call now to schedule your personalized consultation or take a tour.

Our Services

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Restore balance. Reignite vitality.

At GenAge Center in Ada and Grand Rapids, we specialize in Bioidentical (Natural) Hormone Replacement Therapy (BHRT) for both men and women experiencing hormone decline due to aging, menopause/andropause, or stress. By restoring testosterone, estrogen, and other key hormones to optimal levels, we help you look, feel, and perform at your best.

Major Roles of BHRT:

Preferred Treatment Options:

Note: BHRT takes time to work, and the impact varies from person to person. Many people begin to feel better within 4–6 weeks, with full benefits realized over 12–18 months.

Sustainable fat loss—powered by data and medical insight.

Struggling with stubborn weight despite your best efforts? At GenAge Center, we offer a scientifically backed approach to body composition-focused weight loss, not just calorie reduction. Our method includes personalized consultation, metabolic testing, and lifestyle diagnostics for lasting results.

What to Expect:

For some clients, GLP-1 agonists like Tirzepatide or nutraceuticals may be offered under physician supervision.

Know your numbers. Take control of your health.

DEXA scanning is the gold standard for understanding your true body composition—something a scale alone can’t show. Whether you’re looking to build muscle, reduce fat, or monitor bone density, our Hologic Horizon® scanner delivers precise, actionable insights.

What to Expect:

Your Results Include:

Regain your spark—naturally.

Feeling less energetic than usual? Our energy revitalization protocols identify the deeper metabolic and hormonal reasons behind fatigue. We focus on restoring optimal function so you can be your best.

Core Program Features:

Recover. Rebalance. Recenter.

Massage at GenAge Center goes far beyond relaxation—it’s a clinically supported tool for pain relief, recovery, and overall wellness. Ideal for athletes, busy professionals, and anyone seeking holistic healing in Ada or Grand Rapids.

What to Expect:

Health Benefits:

Train smarter. Recover faster. Compete harder.

Our performance programs are built on objective metrics to help you break limits and avoid burnout. Whether you’re a triathlete, CrossFitter, or weekend warrior, we help you maximize endurance, power, and recovery.

Performance Testing:

Ongoing Optimization:

Why Choose GenAge Center?

Meet Dr. Hyung Kim, MD, MBA, FACP

Triple Board-Certified Physician & Visionary Wellness Leader

Dr. Hyung Kim is the founder and Center Director of GenAge Center. With an impressive career spanning clinical care and healthcare leadership, Dr. Kim is triple board-certified by:

Dr. Kim earned his M.D. from Johns Hopkins University and completed both his residency and MBA at the University of Michigan. He has held influential positions, including Senior Associate Dean at Michigan State University and President of Mercy Health Saint Mary’s in Grand Rapids.

A passionate advocate for functional wellness and preventive care, Dr. Kim brings a unique, whole-person approach to optimizing energy, vitality, and long-term health. Personally, he is driven by his own goals to maintain high performance and vitality.

At GenAge Center, Dr. Kim provides personalized care by combining individual needs and medical advances, ensuring every patient receives the attention, insight, and support they need to thrive.

Advanced Testing: Labs, DEXA scan, VO2 testing, and more

Post-Treatment Care & Long-Term Success

Our mission is to help you not only feel better—but also stay better. We provide long-term care plans that include follow-up testing, lifestyle updates, and on-demand access to expert support.
Your success is our success.

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Real Results.
Real Transformations.

At GenAge Center, we are proud to help clients of all ages take control of their health and vitality. Here’s what some of our patients have to say about their experience:

“My wife and I met with Dr. Kim after a friend recommended GenAge Center. Our initial consult lasted over an hour, and we came away convinced. If you are ready to improve your health and wellness, contact GenAge.”
Chris N.
Age 70. On BHRT for 1 year
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“I feel I regained my youthful edge, including better muscle tone, less aches and pains and better general energy and mood. As a trainer, I recommend all male clients over age 45 to get their hormone levels checked and seek professional optimization.”
Tom
Age 66. On BHRT for 5 years
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"My husband and I began working with Dr Kim and his office last December. Dr Kim's attention to detail, patient care, and health knowledge is impressive. We are excited to watch our health improve with his guidance."
Angie M.
Age 50. On BHRT for 1 year
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“As I entered my 19th season in the NFL, I’ve had the best physical condition in my professional career, physical body shape, positive self-esteem, and life outlook. I’ve been fortunate to have a dedicated training schedule, nutrition support, and guidance from professionals in my best interest to reach optimal personal achievements.”
Dean
Age 57. On BHRT for 3 years
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"Highly recommend Dr. Kim and the team at GenAge Center! Their comprehensive approach has my health back on track."
John S.
Age 46. On BHRT for 1 year
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"When my PCP and OBGYN told me I was "normal" and "this is just the time of life you're in," I knew there had to be something more for my health. Dr. Kim and GenAge Center have been a game changer for my well being. I feel like I've got myself back, only better. The care is personable and attentive to you and your needs. I will forever be grateful for Dr. Kim and staff!"
Marcie B.
Age 49. On BHRT for 2 years
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Start Your Personalized Wellness Journey

Whether you’re battling hormone shifts, fatigue, weight gain, performance plateaus, or seeking better longevity and wellness—GenAge Center is here to help.

Schedule your appointment conveniently online.