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General Preventive Medicine Residency


Program Director

Clarence LamClarence Lam, M.D., M.P.H. serves on faculty and as the program director of the preventive medicine residency program at the Johns Hopkins Bloomberg School of Public Health.

Dr. Lam is a Phi Beta Kappa graduate of Case Western Reserve University where he completed his Bachelor of Arts in political science and biology. He earned his medical degree from the University of Maryland and his Master of Public Health from Johns Hopkins University. He completed his residency training at Johns Hopkins, where he also served as chief resident, and is board-certified in preventive medicine.

In November 2014, Dr. Lam was elected to serve as a state delegate representing District 12, which includes both Howard and Baltimore Counties, in the Maryland General Assembly, where he currently serves on the House Environment and Transportation Committee. He is one of only four physician-legislators currently in the Maryland General Assembly.

While in medical school, Dr. Lam was elected as the student-body president of the University of Maryland, Baltimore, and he interned on the health affairs staff of the Committee on Oversight and Government Reform of the U.S. House of Representatives where he assisted oversight investigations on drug safety policy. He also served as a biodefense analyst at the Center for Biosecurity of the University of Pittsburgh Medical Center and authored several publications on public health preparedness. From 2009-2014, he served on the legislative staff of Delegate Dan Morhaim, MD in the Maryland General Assembly.

Dr. Lam is involved in many community organizations and serves on several non-profit boards of directors, including Healthy Howard, Unified Community Connections (formerly the United Cerebral Palsy of Central Maryland), and as board chair of the Community Action Council of Howard County, which manages the county’s food bank, Head Start program, and provides for energy and housing assistance to residents in need. He was a past appointee to the Governor’s Commission for Asian Pacific American Affairs and to Howard County’s Spending Affordability Advisory Committee.

Chief Resident

Chief Resident - Elham HatefDr. Mary Carol Jennings is the 2015-2016 Chief Preventive Medicine Resident of the Hopkins program. She also holds an appointment as a post-doctoral fellow in the Department of International Health.

Under the guidance of the GPMR Program Director and Faculty, Dr. Jennings will oversee 12 PGY-2 and PGY-3 residents, will create and implement curriculae designed to teach the preventive medicine competencies to trainees, and will provide didactic and hands-on instruction to residents and visiting students. During her tenure, she will work with the Program Director to enhance the program’s training opportunities in international health and to build the network of the GPMR program within the Hopkins system.

Her post-doctoral research focuses on best practices and feasibility of scaling up a novel indicator of the quality of clinical care for use in labor wards in USAID priority countries. The mentor for her fellowship is Dr. Henry Perry (Baltimore) and the PI for her research is Dr. Jim Litch (Seattle).

Her further research and public health practice interests include:

Dr. Jennings holds a master in public health from the Johns Hopkins Bloomberg School of Public Health, a medical doctorate from the University of South Carolina, and a bachelor’s degree in neuroscience from the College of William & Mary.

In extracurricular affairs, Dr. Jennings currently serves as a Young Physician Assistant Co-Chair for the Global Health track of the American College of Preventive Medicine’s 2015 annual meeting. She recently co-founded the new APHA International Health Student Committee. She serves as a Vice-President on the national board of the National Physicians Alliance.