Sumer Belbez Pek, a renowned physician-scientist and endocrinologist, passed away in Ann Arbor on May 24, 2026. Born on August 17, 1933, in Ankara, Türkiye, he earned his M.D. and Ph.D. from Ludwig Maximilian University of Munich, Germany. In 1960, he moved to Michigan, embarking on a distinguished career in medicine and academic leadership. Pek is survived by his wife of 45 years, Marilyn (Mickey) Katz-Pek, their children, grandchildren, and extended family worldwide.
A long-time faculty member at the University of Michigan Medical School, Pek became a professor emeritus, focusing on diabetes and endocrine disorders. His groundbreaking research on insulin secretion and pancreatic islet biology appeared in leading medical journals. Pek received numerous accolades, including awards from the Scientific and Technological Research Council of Türkiye, recognizing his contributions to biomedical research.
Pek held significant leadership roles, such as chairing the Institutional Review Board for the Use of Human Subjects in Research, ensuring ethical standards in clinical investigations. His intellect and mentorship were highly esteemed by colleagues and students. Deeply connected to the Turkish community, Pek helped establish the Turkish American Cultural Association of Michigan, promoting cultural ties and community engagement.
Outside academia, Pek enjoyed traveling with his family, sharing his love of exploration and cultural curiosity. In his final months, his wife, supported by dedicated caregivers, provided loving care. Remembered for his kindness and dedication to family, Pek also had a passion for classical music, inspiring those around him.
A future celebration of Sumer’s life is planned. For details, please contact the family. In lieu of flowers, memorial contributions can be made to Doctors Without Borders/Médecins Sans Frontières (MSF) in his honor.
— Submitted by Muehlig Funeral Chapel
—
Read More Michigan News
