Internal Medicine Residency

Leadership Overview


Michael Parmacek, MD, Chair Department of Medicine

Michael Parmacek MDDr. Parmacek performed residency training in Internal Medicine at the University of Michigan. He performed clinical and research fellowship training in Cardiology at Northwestern. Following fellowship training he performed a postdoctoral research fellowship at the HHMI at the University of Michigan. Dr. Parmacek was appointed to the faculty of the Department of Medicine (Cardiology) at Michigan (1987-92). He then joined the faculty of the University of Chicago serving as Co-Chair of the Cardiology Fellowship training program (1992-1998). Dr. Parmacek was recruited to Penn, where he served as Chief of the Cardiovascular Medicine Division from 1998 until 2014. During his tenure, the Cardiovascular Division ascended to the top tier of academic cardiology divisions in the United States. Dr. Parmacek was appointed founding Director of the Penn Cardiovascular Institute in 2005. The Parmacek laboratory is recognized for discoveries influencing understanding of the molecular and genetic basis of congenital heart disease, diseases of the aorta, heart failure and regenerative biology. Dr. Parmacek has been elected to the ASCI, AAP, and he has served on the Advisory Council of the NHLBI.

Lisa Bellini, M.D, Program Director

Lisa Bellini, M.D.

Dr. Bellini completed her training in internal medicine at the University of Pennsylvania, where she was a chief resident, then went on to complete her Pulmonary fellowship at Penn as well. She spends a large portion of her time teaching all levels of trainees. Given the concentration of teaching experiences on the inpatient services, Dr. Bellini is responsible for the organization and maintenance of the inpatient medicine services that cover over 220 beds and 15,000 admissions per year. This includes oversight for the Penn Hospitalist Program for general medicine inpatients. In 2008, she was appointed Vice Dean for Faculty and Resident Affairs for the Perlman School of Medicine at the University of Penn. In this role, she has a direct impact on issues of major importance to faculty and residents across the school. Her primary research interests involve the design, implementation and evaluation of new educational initiatives. Current interests involve issues related to house staff quality of life including sleep deprivation, depression, burn out and empathy. Her clinical interests include general pulmonary medicine, particularly advanced lung disease.

Todd Barton, M.D, Associate Program Director

Todd Barton, MD

Todd Bartoon is the Senior Associate Program Director, and an Associate Professor of Clinical Medicine in the Division of Infectious Diseases. Todd was raised in St. Louis, where he attended high school and became a fervent Cardinals fan. He went to medical school at the University of Rochester, where he led an AIDS education task force during the first two years. Between second and third years of medical school, Todd did a year out research project with the Immunodeficiency Program at Penn, where his interest in caring for HIV-infected patients was cemented. Todd then came to Penn for internship, residency, chief residency, infectious diseases fellowship, and faculty life. Todd attends on multiple infectious disease services including bone marrow transplant and HIV services, and has an outpatient practice with a mix of HIV, Lyme, and general infectious disease patients. He has won several teaching awards from medical students, residents, and fellows during his time on faculty at Penn. Todd also enjoys coaching some of his kids’ sports teams and wasting time playing video games when not in the hospital.

Karen Warburton, M.D, Associate Program Director

Karen Warburton, MD

Dr. Warburton is an Assistant Professor of Clinical Medicine in the Renal, Electrolyte and Hypertension Division at the University of Pennsylvania.  She is also an Associate Program Director for the Internal Medicine Residency Program and is the Site Director for Medicine at the Philadelphia VA Medical Center, where she oversees the clinical and educational experience for medical students and residents rotating on Internal Medicine services at the VA.  Her clinical interests include transplant nephrology and complex hypertension.  She has been involved on the national level with the American Society of Nephrology’s campaign to improve nephrology education and increase interest in nephrology careers. 

Jessica Dine, M.D, Associate Program Director

Jessica Dine, MD

Dr. Dine is an Assistant Professor in the Division of Pulmonary, Allergy and Critical Care. She is also an Associate Program Director for the Internal Medicine Residency Program. Dr. Dine’s clinical focus is on consultative pulmonary medicine. Her research interests include understanding and measuring clinical leadership and creating measures of supervision, influence and training in medical education.

Judd Flesch, M.D, Associate Program Director

Judd Flesch, MD

Dr. Flesch is an Assistant Professor of Clinical Medicine in the Division of Pulmonary, Allergy, and Critical Care. He also serves as an Associate Program Director for the Internal Medicine Residency Program and Site Director for the Residency Program at Penn Presbyterian Medical Center (PPMC). Dr. Flesch’s clinical interests include consultative pulmonology and respiratory failure. He attends on the General Medicine Service, the Pulmonary Consultation Service, and the Medical Intensive Care Unit at PPMC. He is also an Associate Director of the Penn Medicine Program for LGBT Health, and has an interest in the climate for LGBT medical trainees and educating trainees in the care of LGBT patients.

Val Amorosa, M.D, Associate Program Director

Val Amorosa, MD

Val Amorosa is an Associate Professor of Clinical Medicine in the infectious diseases division at Penn. She is an Associate Program Director for the Internal Medicine Residency Program and the site director for the program at the Philadelphia Veterans Affairs Medical Center where she works with the Chief Medical Resident to oversee the medicine residents rotating at the VA. She also serves as Chief of the Infectious Diseases Section at the VA. She attends on the inpatient infectious diseases services at HUP and the VA and also attends on the medicine service at the VA. Her outpatient focus is HIV and viral hepatitis.

Jeffrey Jaeger, M.D, Associate Program Director

Jeffrey Jaeger, MD

Dr. Jaeger is Associate Professor of Clinical Medicine in the Division of General Internal Medicine. Dr. Jaeger oversees the continuity clinic experience at the 4 resident-faculty practice sites where Penn residents follow panels of patients. He precepts residents in continuity clinic at the Penn Internal Medicine Associates and serves as a mentor for residents considering careers in outpatient general internal medicine. He is the past-president of the Mid-Atlantic Region of the Society of General Internal Medicine, where he currently serves as the co-chair of the Health Policy Education Subcommittee. He has an interest in the role of physicians in the detection and prevention of domestic violence, and has participated in the development of guidelines surrounding screening for domestic violence. His current interests are in Graduate Medical Education health policy, and education of physicians in the skills of quality improvement. .

David Aizenberg, M.D, Associate Program Director

David Aizenberg, MD

Dr. Aizenberg is an Assistant Professor of Clinical Medicine in the Division of General Internal Medicine. His clinical time is divided between outpatient primary care, inpatient general medicine, and outpatient consultative medicine. He is a preceptor and Assistant Director of Ambulatory Resident Education at the Penn Internal Medicien Associates. Dr. Aizenberg’s interests include educational innovation and he has spear-headed the program’s transition to a 6+2 intern scheduling system and the addition of a theme-based ambulatory curriculum.