Dr. Michael Hieber is a Primary Care Physician at Warren Clinic and formerly served as Assistant Clinical Professor in the OSU Internal Medicine Residency Program, where he taught residents in both primary care and HIV medicine. Board certified by the American Board of Internal Medicine and a certified HIV Specialist, Dr. Hiebert earned his Doctor of Osteopathic Medicine from Oklahoma State University College of Osteopathic Medicine and completed internal medicine residency at OSU Medical Center in Tulsa. Prior roles include Hospitalist at Texas Health Resources in Fort Worth. Dr. Hiebert is actively involved in research and quality improvement, with recent projects addressing HIV-related metabolic complications, STI prevention, and respiratory disease management. A frequent presenter, he has lectured on clinical HIV care, preventative medicine, and transgender health in primary care settings.