About
Dr. Kevin Weikart has practiced internal medicine in the O'Fallon, Missouri area for over three decades. He earned his Bachelor of Arts in Biology and Chemistry from Millikin University in Decatur, Illinois, then completed his Doctorate of Medicine at the American University of the Caribbean. He completed his internship at Lutheran Medical Center in Cleveland, Ohio, and his residency at Seton Hall University's St. Elizabeth Hospital in Elizabeth, New Jersey.
Dr. Weikart holds board certification from the American Board of Internal Medicine. He earned Fellowship status in both the American College of Physicians and the American College of International Physicians. He served as a Clinical Professor at Washington University School of Medicine from 2006 to 2012. At St. Joseph's Hospital West, he served as Chief of Staff and Chief of Medicine, among numerous other leadership roles. He has received the American Medical Association Physician Recognition Award and the Patients Choice Award, and belongs to the American Diabetes Association and the Missouri State Medical Association. His approach centers on listening, thorough examination, and building a shared plan with each patient to support whole-health improvement.
Education & Training
Undergraduate
Millikin University, Decatur, IL, Bachelor of Arts, Biology and Chemistry 1979
Medical School
American University of the Caribbean, Plymouth Mont Serrat
Residency
Seton Hall University, St. Elizabeth Hospital, Elizabeth, NJ
Additional Training
Internship: Lutheran Medical Center, Cleveland, OH, 1984-1986; Clinical Professor, Washington University School of Medicine 2006-2012
Certifications
Conditions Treated
Who is Dr. Weikart right for?
Dr. Weikart is a strong fit for adults seeking a long-term relationship with an experienced internist. Patients managing chronic conditions like diabetes benefit from his focused, collaborative approach. His decades of practice in the O'Fallon area suit patients who value continuity and a physician who knows their full history. Adults who want after-hours access and same- or next-day availability will find his practice well-suited to their needs.
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Frequently Asked Questions
Dr. Weikart specializes in internal medicine. He holds board certification from the American Board of Internal Medicine and has practiced in the O'Fallon, Missouri area for over thirty years.
Yes. Dr. Weikart holds board certification from the American Board of Internal Medicine. He also holds Fellowship status in the American College of Physicians and the American College of International Physicians.
Dr. Weikart earned his Doctorate of Medicine from the American University of the Caribbean. He completed his internship at Lutheran Medical Center in Cleveland, Ohio, and his residency at Seton Hall University's St. Elizabeth Hospital in Elizabeth, New Jersey.
Yes. Dr. Weikart treats patients managing diabetes. He holds membership in the American Diabetes Association, reflecting a longstanding clinical interest in diabetes care.
Dr. Weikart has held extensive leadership positions at St. Joseph's Hospital West, including Chief of Staff and Chief of Medicine. He also served as a Clinical Professor at Washington University School of Medicine from 2006 to 2012.
Dr. Weikart focuses on listening, reviewing, and examining each patient thoroughly. He then works with patients to build a mutually agreed-upon plan aimed at comprehensive health improvement. This collaborative approach shapes every visit.
Yes. Dr. Weikart stays reachable by phone after hours and on weekends. Members can contact him directly for urgent concerns outside of regular office hours.
Dr. Weikart holds an affiliation with St. Joseph's West Hospital in the O'Fallon area. He previously served as Chief of Staff and Chief of Medicine there.
Doctor profile last updated June 8, 2026