Dr. Mark Fesler, MD, is a distinguished Hematologist Oncologist serving the Chesterfield, MO community with dedication and expertise. With over 22 years of experience in the field, Dr. Fesler offers specialized care in Hematology and Oncology at St. Luke’s Center for Cancer Care, affiliated with St. Luke’s Hospital. A graduate of Saint Louis University School of Medicine, his comprehensive training included a residency at the University of Colorado Health Science Center, which has equipped him with a robust foundation in both academic and clinical settings. Dr. Fesler’s board certification in Hematology underscores his commitment to maintaining the highest standards of medical care.

Dr. Fesler is renowned for his patient-centered approach, emphasizing compassionate and individualized treatment plans for each patient. His clinical focus includes managing complex conditions such as Non-Hodgkin’s Lymphoma, Macroglobulinemia, and Acute Leukemia, where he applies the latest advancements in medical research to improve patient outcomes. Dr. Fesler has earned a stellar reputation, reflected in his consistent 5.0-star patient ratings, which highlight his ability to deliver effective and empathetic care. His dedication to staying informed about the latest developments in his field ensures that his patients receive the most advanced and comprehensive treatment options available.

Beyond his clinical expertise, Dr. Fesler is deeply committed to the well-being of his community. He is currently accepting new patients and is known for his accessibility and willingness to work with a wide range of insurance providers, including CareFirst Blue Cross Blue Shield, Anthem, UnitedHealthCare, and more. This commitment to accessibility underscores his dedication to broadening the reach of high-quality healthcare and making a positive impact on the lives of his patients and their families.