Dr. John Charles Lesniak, MD

Dr. John Lesniak is a family medicine physician who completed his medical education at the Medical College of Wisconsin, where he also finished his residency training. With 29 years of experience in practice, he has built extensive expertise in providing comprehensive primary care for patients of all ages. Dr. Lesniak speaks English and focuses on delivering personalized healthcare to families throughout his community.

Dr. Lesniak practices at multiple locations including Hartland, Waukesha, and Oconomowoc, Wisconsin, with his primary affiliation at Prohealth Oconomowoc Memorial Hospital. He specializes in managing common chronic conditions such as high blood pressure and type 2 diabetes. His practice also includes treating high cholesterol in children and teenagers, reflecting his commitment to preventive care across all age groups. Patients consistently rate their experience highly, giving him an average rating of 4.8 out of 5 stars.