Dr. James LewerenzD.O., F.A.A.R.M.
Family Medicine
at Longevity Health Institute — Rochester Hills, MI
About
T. Still University, in Kirksville, Missouri. He completed his residency training in Family and General Practice and Emergency Medicine across Garden City Hospital, Beaumont Hospital, and Henry Ford Hospital. He holds board certification in Family Practice and earned fellowship standing in the American Academy of Anti-Aging and Restorative Medicine.
Dr. Lewerenz serves as an active staff physician at Beaumont Hospital, Botsford Hospital, and St. John Hospital. He holds an Assistant Clinical Professor appointment at Michigan State University. He formulated the JV Nutraceuticals supplement line based on patient needs and years of clinical observation. He spent a decade as physician for the Kronk Boxing Team and has treated athletes, musicians, and entertainers worldwide. Outside the clinic, he competes regularly in mountain bike races and enjoys hockey, snowboarding, climbing, and golf. He and his wife are parents to four children and two dogs.
Education & Training
Medical School
Doctor of Osteopathic Medicine, Kirksville College of Osteopathic Medicine (now A.T. Still University), Kirksville, Missouri
Residency
Residency in Family/General Practice and Emergency Medicine at Garden City Hospital, Beaumont Hospital, and Henry Ford Hospital
Fellowship
Fellow of the American Academy of Anti-Aging and Restorative Medicine (F.A.A.R.M.)
Certifications
Conditions Treated
Who is Dr. Lewerenz right for?
Dr. Lewerenz is a strong fit for patients who want a physician with deep roots in both conventional and functional medicine. Athletes and high-performers benefit from his decade of experience with elite-level sports medicine. Patients managing chronic conditions, hormonal imbalances, or metabolic concerns will find his preventive approach well-suited to their needs. His background in emergency medicine also makes him effective for patients who want a physician comfortable managing acute and complex presentations.
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Frequently Asked Questions
Dr. Lewerenz focuses on family medicine, functional medicine, and preventive medicine. He integrates conventional primary care with evidence-based functional approaches to address root causes. His clinical interests include hormone optimization, anti-aging, and performance health.
Yes, Dr. Lewerenz holds board certification in Family Practice. M. fellow.
O. T. Still University. He completed his residency training across Garden City Hospital, Beaumont Hospital, and Henry Ford Hospital, focusing on Family and General Practice and Emergency Medicine.
Yes, Dr. Lewerenz spent a decade as the team physician for the Kronk Boxing Team. He has also treated professional musicians and entertainers. His experience with high-performance patients informs his approach to recovery, optimization, and preventive care.
Dr. Lewerenz formulated the JV Nutraceuticals supplement line based on patient needs and years of clinical observation. He developed the line to complement the functional medicine protocols he uses in practice.
Yes, Dr. Lewerenz holds an Assistant Clinical Professor appointment at Michigan State University. He also serves as an active staff physician at Beaumont, Botsford, and St. John Hospitals.
Dr. Lewerenz holds active staff affiliations at Beaumont Hospital, Botsford Hospital, and St. John Hospital. The practice also maintains affiliations with Corewell Health and Ascension Hospitals.
Doctor profile last updated March 21, 2026