Saint Vincent Hospital Yorktown Endoscopy Center

Mary Lasher, DO Mary Lasher, DO, is a physician with AHN Primary Care Institute, specializing in family medicine. She provides patient-centered primary care for preventive exams, ongoing conditions, illness, or injuries and applies best practice technique and procedures to help insure long-term patient outcomes. Dr. Lasher went to medical school at Lake Erie College of Osteopathic Medicine in Erie, Pennsylvania and did her residency at Saint Vincent Family Medicine in Erie, Pennsylvania. She is certified by the American Board of Family Medicine and is affiliated with the American Academy of Family Physicians and the American Osteopathic Association. She has used her expertise in family medicine to give back to the community with various community service positions. She sees patients of all ages.

Jennifer Potthoff, RD, LDN Jennifer Potthoff, RD, LDN, is a dietitian and nutritionist with AHN Medicine Institute, specializing in pediatric and adult obesity, weight loss, and diabetes. She is skilled at helping people improve their health and lifestyle through proper food and nutrition. She received her degree in Nutritional Science with a minor in Psychology from Penn State University in State College, Pennsylvania. Jennifer’s approach to patient care is focusing on the belief that food is our medicine and that a healthy meal plan, exercise, and adequate sleep should be the first line of defense for disease prevention and management. Jennifer strives to help people see that they can still enjoy food, while also nourishing their body. She sees patients of all ages 5 and up. Jennifer only takes patients from her individual offices that she serves. Patients can make an appointment by first getting a referral from their PCP.