Department of Medicine

Learn more about the Department of Medicine's leadership team.

Michael Parmacek, MD, Chair Department of Medicine

Michael S. Parmacek, MD

Dr. 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, MD, Vice Chair of Education and Inpatient Services

Lisa M. Bellini, MD

Dr. Bellini obtained her medical degree from the University of Alabama in 1990. She came to Penn to pursue her Internal Medicine residency training followed by a year as a Chief Medical Resident. She subsequently completed a Pulmonary Fellowship and joined the faculty in 1996. Dr. Bellini currently serves as the Vice Chair of Education and Inpatient Services for the Department of Medicine. She recently stepped down as Program Director of the Internal Medicine Residency after 20 years. She continues to oversee all of the undergraduate and graduate medical education programs in the department. From 2005-2008, she was the Associate Dean for GME for University of Pennsylvania Health System. In that role, she had operational responsibility for all policies and procedures related to the training of over 1000 residents and fellows in 68 UPHS sponsored training programs. In 2008, she assumed the role of Vice Dean for Faculty Affairs for the Perelman School of Medicine. In that role, she has oversight for faculty policies and procedures. In 2016, her role expanded to Vice Dean for Academic Affairs and now includes oversight of Penn’s academic partnerships. On a national level, Dr. Bellini has been an active member of the Alliance of Academic Internal Medicine (AAIM) where she served as inaugural Chair of the Board as well as Treasurer and President of the Association for Program Directors in Internal Medicine. She recently chaired the inaugural AAIM Innovations Committee. She currently chairs the Committee on Faculty Identity for the AAMC and is a member of their national GME task force. Additionally, she has served on several key committees for the Accreditation Council for Graduate Medical Education, using much of her research and administrative experience to influence national policy regarding graduate medical education. She was also a member of the Institute of Medicine's committee on Conflict of Interest, which has had a major impact on professional conduct within the academic community. Dr Bellini has won numerous awards including the Penn Pearls Teaching Award, the Maurice Attie and Donna McCurdy Teaching Awards, the Robert Dunning Dripps Award for Excellence in Graduate Medical Education, and the University-wide Lindback award for excellence in teaching. She has also received the lifetime achievement award from AAIM. Her research focuses on medical education, including the health and well-being of residents and faculty as well as the effects of fatigue and sleep deprivation on patient outcomes and the learning environment.

Todd Barton, MD, Program Director

Todd Barton, MD

Todd Barton is the Program Director of the internal medicine residency program and an Associate Professor of Clinical Medicine in the Division of Infectious Diseases.Todd was raised in St. Louis and remains a committed Cardinals fan, even while slowly shifting other loyalties to Philadelphia sports teams. He went to college at Swarthmore College where he met his wife, dabbled in sportscasting, and majored in Chemistry and English Literature.Todd attended the University of Rochester School of Medicine & Dentistry, where he led an AIDS Education Task Force in his pre-clinical time. 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.After medical school graduation, he came to Penn for residency and infectious diseases fellowship. Todd served for a year as Chief Medical Resident, furthering a life-long interest in teaching, and was appointed as Associate Program Director for the internal medicine residency program in 2003. Under the mentorship of Lisa Bellini, he became Senior Associate Program Director in 2009, and was appointed Program Director in 2016.Todd maintains a broad inpatient clinical practice in general infectious diseases, HIV, oncologic infectious diseases, and general internal medicine.His wife, Maryl Kreider, is the director of the pulmonary and critical care fellowship program at Penn, and they have two teenaged children and a teenaged dog. Todd’s hobbies include acting in community theater and over consumption of cheeseburgers and milkshakes. 

Serena Cardillo, MD, Associate Program Director

Serena Cardillo,  MD

Dr. Cardillo is an Associate Professor of Clinical medicine in the Division of Endocrinology, Diabetes & Metabolism. She is also an Associate Program Director and Core Faculty Member in Endocrinology for the Internal Medicine Residency Program. Dr. Cardillo’s clinical practice is based at the Penn Rodebaugh Diabetes Center where she serves as the Director of Graduate Diabetes Education. Dr. Cardillo also leads the Interactive Learning Module for internal medicine residents and oversees elective experiences for the program. Her interests in medical education are in the use of simulation to assess and teach communication skills. At the postgraduate level she has led several innovative national education programs in the area of diabetes management for primary care providers. In her spare time, Dr. Cardillo enjoys cooking, traveling with her husband and 2 daughters and reading historical fiction.

Judd Flesch, MD, Associate Program Director

Judd David 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. 

Eric Palecek, MD, Associate Program Director 

Eric J. Palecek,  MD

Dr. Palecek is an Assistant Professor of Clinical Medicine in the Division of General Internal Medicine and serves as an Associate Program Director for the Internal Medicine Residency Program. He oversees the continuity clinic experiences for residents and the outpatient general medicine curriculum. Clinically, he is based at the Edward S. Cooper Internal Medicine Practice, a blended resident-attending practice, where he sees his own patients and supervises residents. He also attends on the general medicine inpatient teaching service at Penn Presbyterian Medical Center. His academic interests lie in innovative ways to deliver outpatient curriculum to trainees. In his free time, he enjoys playing with his two kids and trying to catch a Packers game whenever they play in the northeast. 

Marisa Rogers, MD, Associate Program Director

Marisa A. Rogers, MD, MPH, FACP

Dr. Rogers is an Associate Professor of Clinical Medicine in the Division of General Internal Medicine. She also serves as an Associate Program Director for the Internal Medicine Residency Program. Dr. Rogers provides clinical care and supervises residents in clinic at the Edward S. Cooper Internal Medicine Practice. She is passionate about physician diversity and leads several initiatives to promote diversity and inclusion in the residency program. Her interests include care models for medically complex patients and improving the health of the West Philadelphia community. She is married to an excellent cook and spends her free time trying to keep up with her 8 and 3 year old kids.

Jason Wagner, MD, Associate Program Director

Jason Wagner Headshot

Dr. Wagner is an Assistant Professor of Clinical Medicine in the Division of Pulmonary, Allergy, and Critical Care. He serves as the Associate Program Director for the Internal Medicine Residency Program, Site Director for the Residency Program at the Philadelphia Veterans Affairs Medical Center, and Core Faculty for the Quality, Safety, and Value Curriculum for Internal Medicine Residency Program. He also is an Associate Program Director for the Pulmonary and Critical Care Fellowship Program where he is the Site Director for the Philadelphia Veterans Affairs Medical Center. Clinically, he attends on the general wards, intensive care unit, and maintains an outpatient pulmonary practice. His main academic interest is the intersection between medical education and high-value care.  

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