Dr. Greenberg is Chair of the Department of Family Medicine at Lehigh Valley Health Network. In his position, Dr. Greenberg has oversight of more than 200 physicians and advanced practice clinicians in 26 practices and ExpressCARE locations. He also directs the family medicine residency program, a sports medicine fellowship program, a longitudinal medical student clerkship, and a small but highly successful family medicine research program. He’s also working toward more effective collaboration among primary care specialties, and ensuring specialists have the opportunity to provide optimal access of care to all communities served by LVHN.

Dr. Greenberg earned his bachelor’s degree in biology and English from the University of Michigan, his medical degree from the University of Michigan Medical School and a master’s degree in health, management and policy from the University of Michigan School of Public Health. He also has a master’s degree in ecology and evolutionary biology from Indiana University.

Prior to joining LVHN, Dr. Greenberg held a variety of leadership roles at the University of Michigan, including Associate Chair of Family Medicine and Associate Medical Director of Quality for the University of Michigan Health System.

A native of Fayetteville, Arkansas, Luke graduated cum laude from Maryville University with a Bachelor of Science in Biology, followed by a Doctor of Osteopathic Medicine from Arkansas College of Osteopathic Medicine. Luke’s interest in medicine was ignited after participating in faith-based mission trips to the Amazon in South America and Baja in Mexico. He witnessed that God’s love has no boundaries and the importance of valuing each person he cared for. His goal as a physician is to show compassion for each patient and approach their care with a holistic mindset. When Dr. Renner isn’t at the hospital, you can find him running, hanging out with his fiancé and fellow resident, Taylor Wejkszner, and cheering on the Arkansas Razorbacks! He has completed both half and full marathon races during undergrad and hopes to get back into “running shape” as a resident! Dr. Renner’s interest in medicine includes in-patient care, as well as continuing to serve the underserved population internationally.

Carolyn Mae Peterseim, M.D. graduated in 2021 from the Medical University of South Carolina. She holds a B.A. from Duke University in cultural anthropology, where she focused on medical anthropology. Her current clinical interests include family medicine, preventive medicine, and sustainable public health programs. She wants to work with both children and adults in an outpatient setting to improve preventive health behaviors like vaccinations, smoking cessation, and metabolic syndrome control, especially in underserved populations. She served as the grant writer for her medical school’s student led and run outreach clinic: Community Aid, Relief, Education and Support (C.A.R.E.S). She wrote the original grant to start a program that provides all school-required vaccinations, vision screening, nutrition and exercise counseling, free books, and financial and social resources for Spanish speaking parents in Charleston, SC. As an undergraduate, she volunteered with Association des Compétences pour une Vie Meilleure (ASCOVIME) in Yaoundé, Cameroon in patient care outreach and comparative analysis of rural and urban accessibility to care. She has significantly contributed to research projects in health behavior, vision screening, sickle cell disease pain management, telehealth for stroke rehabilitation, acute liver failure management, endoscopic retrograde cholangio-pancreatography effectiveness, and opioid-receptor agonist treatment for glaucoma. She looks forward to serving the Lehigh Valley community as a family medicine physician.