About
Dr. Michael Williams, DO is a double board-certified Family Medicine physician with more than two decades of clinical experience. He leads Ultra Wellness Medical in O'Fallon, Missouri, where he blends concierge primary care with integrative and functional medicine. His training spans hospital-based medicine, outpatient care, and nursing home settings, giving him a broad clinical foundation.
Dr. Williams is passionate about hormone health, metabolic wellness, and longevity. He treats conditions including hormone imbalance, thyroid disorders, metabolic syndrome, brain fog, low testosterone, and sexual dysfunction. He offers hormone replacement therapy, peptide therapy, and prescription weight loss programs using medications like semaglutide and tirzepatide. His functional medicine approach looks beyond symptoms to understand how lifestyle factors connect and contribute to a patient's overall health.
Education & Training
Additional Training
Diverse background including hospital-based, office, and nursing home medical experience
Certifications
Conditions Treated
Who is Dr. Williams right for?
Dr. Williams is a strong fit for adults seeking a primary care physician who also addresses hormonal and metabolic concerns. Patients dealing with fatigue, weight gain, brain fog, or hormone imbalance benefit from his functional medicine approach. He also serves patients interested in medical weight loss, peptide therapy, or anti-aging treatments. Those who want direct access to their physician and same-day appointments will find his concierge model well suited to their needs.
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Frequently Asked Questions
Dr. Williams treats a wide range of conditions including hormone imbalance, menopause, andropause, thyroid disorders, metabolic syndrome, low testosterone, brain fog, sexual dysfunction, and weight gain. He also addresses snoring and anti-aging concerns. His functional medicine approach helps him identify how lifestyle and metabolic factors contribute to each condition.
Yes, Dr. Williams holds double board certification in Family Medicine. He brings over two decades of clinical experience across hospital, outpatient, and nursing home settings to his practice in O'Fallon.
Dr. Williams practices lifestyle and functional medicine. He looks for root causes rather than treating symptoms in isolation. He recognizes that many elements of a patient's lifestyle interconnect and tailors his recommendations accordingly.
Yes, Dr. Williams offers hormone replacement therapy, bioidentical hormone replacement therapy, and testosterone replacement therapy. He works with patients experiencing menopause, andropause, and other hormone-related conditions. Treatment plans are individualized based on each patient's symptoms and goals.
Dr. Williams offers a medical weight loss program that includes prescription medications semaglutide and tirzepatide. He also provides metabolic injections such as Lipo B12 and Lipo-Mino to support fat metabolism and energy. He pairs these therapies with a broader look at each patient's metabolic health.
Yes, Dr. Williams offers peptide therapy including BPC-157, sometimes called the Wolverine Shot for its role in rapid recovery. He uses peptides as part of a broader integrative approach to healing, performance, and longevity.
Dr. Williams has practiced medicine for over two decades. His background includes hospital-based care, office-based medicine, and nursing home medicine. That range of experience informs how he approaches complex, whole-patient care in his concierge practice.
Yes, Dr. Williams treats brain fog as a primary concern. He investigates underlying causes such as hormone imbalance, thyroid dysfunction, and metabolic issues. He also offers IV therapies specifically formulated to support mental clarity and cognitive performance.
Doctor profile last updated June 11, 2026