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Our accomplished faculty members and staff are committed to providing an outstanding training experience for our residents.


Kirsten Johnsen Martin, DO, FAAFP

Director of Osteopathic Education

Dr. Johnsen Martin joined our faculty as the Director of Osteopathic Education after nearly 12 years in practice at a Lancaster City-based federally qualified health center, where her roles included family physician, site medical director, and chief medical officer.

Dr. Johnsen Martin is a graduate of Lake Erie College of Osteopathic Medicine and the Lancaster General Hospital Family Medicine Residency Program. Her areas of clinical interest include full-spectrum family practice, with a focus on family-centered obstetrical care, women’s health, and addiction medicine.

After graduating from Franklin & Marshall College and prior to attending medical school, Dr. Johnsen Martin worked as a community health worker and health educator, serving migrant and seasonal farmworkers. She has volunteered on mission trips to Nicaragua, Honduras, Thailand and Tanzania, and she continues to travel frequently to Nicaragua collaborating on projects focused on poverty, social justice, and global health.

Dr. Johnsen Martin served as a community preceptor for residents, medical students, and advanced practice clinician students, and is excited to now be leading the osteopathic curriculum for the residency program. In her free time, she enjoys spending time with her family, camping, hiking, traveling, sampling international foods, cooking, perfecting her artisan bread, and working with her husband to renovate their 1930s home. She resides in Lancaster with her husband and four children.

Kenneth Wensen Lin, MD, MPH

Associate Director

Dr. Lin joined our faculty in June 2022. After graduating from New York University School of Medicine, he completed his residency at Lancaster General Hospital and a fellowship in medical editing and faculty development at Georgetown University. He spent 17 years in Washington, DC, as a medical officer at the Agency for Healthcare Research and Quality (supporting the US Preventive Services Task Force) and as a faculty member at Georgetown’s School of Medicine and family medicine residency program. During this time, he also earned a Master of Public Health degree at Johns Hopkins University and taught Preventive Medicine residents at Hopkins and Uniformed Services University.

Since 2018, Dr. Lin has been Deputy Editor of American Family Physician, the most widely read journal in primary care. He previously chaired the American Academy of Family Physicians’ Subcommittee on Clinical Practice Guidelines and currently serves on the Association for Prevention Teaching and Research (APTR) Board of Directors. His professional areas of interest include health policy and advocacy, preventive medicine, clinical practice guidelines, and medical overuse / low-value care. Dr. Lin writes regular commentaries for Medscape and shares his views on his personal blog, Common Sense Family Doctor.

Dr. Lin and his wife Marguerite, also a graduate of the Lancaster General Hospital Family Medicine Residency Program, were delighted to move back to the area with their four children. When he’s off work, you can find him reading for pleasure, visiting history museums and Civil War battlefields, and rooting for the Dallas Cowboys.