Karen Krok, MD

    Calculated based on number of publications stored in Pure and citations from Scopus
    1998 …2024

    Research activity per year

    Personal profile

    Research interests

    Dr. Karen Krok joined Penn State College of Medicine in 2013. Her research interests include post-liver-transplant outcomes, focusing on patients transplanted for hepatitis C; the cardiovascular complications of patients after a liver transplant; pulmonary complications of liver disease; and outcomes of heart-liver transplants in the congenital heart disease population.

    Dr. Krok is the site PI for a multicenter trial, Pulmonary Vascular Complications of Liver Disease 3 Study Group, which assesses the pulmonary complications and hormonal changes in patients with pulmonary hypertension and hepatopulmonary syndrome. She has successfully recruited for and been the site PI for several multi-site and pharmaceutical clinical trials. 

    As the congenital heart disease population is aging, there is more evidence of liver disease associated with the Fontan circulation. Dr. Krok has served on an international multi-specialty group that developed recommendations about how to follow these patients clinically.

    Clinical interests

    Dr. Karen Krok is a board-certified transplant hepatologist, focused on the diagnosis of and care for patients with cirrhosis and liver cancer. She is the medical director for both the liver transplant program and the live donor liver transplant program at Penn State Health Milton S. Hershey Medical Center.

    As a gastroenterologist, Dr. Krok also sees patients who need screening for colon cancer.

    Teaching and educational interests

    Dr. Karen Krok was director for the Gastroenterology and Hepatology Fellowship at Penn State Health Milton S. Hershey Medical Center from 2016 to 2019. After assuming her vice chair role in the Department of Medicine, she assumed the role of assistant director of the fellowship.

    She hs a strong passion for medical education. She previously served on the education council for the Internal Medicine Residency at Hershey Medical Center from 2018 to 2019 and was a JEMS mentor for residents from 2014 to 2018. She is also a member of the Internal Medicine Residency clinical competency committee.

    Dr. Krok has spoken at numerous local, national and international meetings.

    Professional information

    Fellow, American Association for the Study of Liver Diseases, 2018 (member, 2006 to present; member, Surgery and Liver Transplantation Committee, 2007 to 2009; member, Public Policy Committee, 2010 to 2013; member, Conflict of Interest Committee, 2015 to 2018)

    Member, Pennsylvania Society of Medicine, 2015 to present (treasurer, 2018; secretary, 2019)

    Member, American Society of Transplantation, 2010 to present

    Board-certified in transplant hepatology, American Board of Internal Medicine, 2008 to present

    Board-certified in gastroenterology and hepatology, American Board of Internal Medicine, 2007 to present

    Member, American College of Gastroenterology, 2005 to present

    Board-certified in internal medicine, American Board of Internal Medicine, 2004 to present

    Member, American Gastroenterological Association, 2004 to present

    Expertise related to UN Sustainable Development Goals

    In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):

    • SDG 3 - Good Health and Well-being

    Education/Academic qualification

    Transplant Hepatology, Fellowship, Johns Hopkins University


    Gastroenterology and Hepatology, Fellowship, Johns Hopkins University


    Internship and Residency, University of Pennsylvania


    MD, University of Pennsylvania

    … → 2001

    Biology and Spanish, BA, Franklin and Marshall College

    … → 1997

    External positions

    At-Large Steering Committee Member, Clinical Practice Special Interest Group, American Association for the Study of Liver Diseases (AASLD)


    Member, Development Committee, American Association for the Study of Liver Diseases (AASLD)

    2019 → …

    Member, Review Board for Hepatocellular Carcinoma, United Network for Organ Sharing

    2019 → …

    Representative to Specialty Leadership Cabinet, Pennsylvania Society of Medicine

    2016 → …

    Board Member, American Liver Foundation

    2012 → …

    Member, Liver and Intestinal Community of Practice, American Society of Transplantation

    2010 → …

    Board Member, Pennsylvania Society for Gastroenterology


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