Dr. John Joseph Messmer, MD

Dr. John Messmer specializes in family medicine and geriatric medicine, bringing nearly five decades of medical expertise to patient care. He earned his medical degree from Pennsylvania State University College of Medicine and completed his residency at the United States Naval Medical Center. With 49 years of experience in medicine, Dr. Messmer is fluent in Chinese, Spanish, English, and French.

Dr. Messmer practices at Penn State Health Milton S Hershey Medical Center and sees patients in Palmyra, Camp Hill, Lebanon, and Hershey, Pennsylvania. He focuses on caring for patients with Alzheimer's disease, dementia, and cognitive impairment. His approach includes physical therapy and strength training to help patients maintain their independence and quality of life. Patients consistently rate Dr. Messmer highly, giving him an average rating of 5.0.