Vassyl A. Lonchyna, MD

Assistant Professor of Surgery

Vassyl A. Lonchyna, MD, is an expert in cardiothoracic surgery, specializing in post-operative care. Under his leadership, a multidisciplinary team works to improve patient comfort while reducing the risk of complications and the length of hospital stay.

Dr. Lonchyna also serves as the quality officer for the Section of Cardiac and Thoracic Surgery. In collaboration with other University of Chicago physicians, he develops protocols to ensure that the University of Chicago Medicine consistently provides the best patient care.

A leading researcher, Dr. Lonchyna has contributed to key advancements in cardiac care. In one study, he found that nutritional supplements can improve the healing process for patients on surgical critical care units. He also developed a rabbit model of heart failure to further research on calcium flux in muscle cells involved in heart failure.

In addition, Dr. Lonchyna is a prolific author and speaker. He has published more than 20 scientific articles in peer-reviewed journals, as well as several book chapters on ventricular assist devices and cardiac bypass surgery. He is frequently invited to deliver presentations on cardiothoracic surgery and transplantation at national and international conferences.

Practice Location

The University of Chicago Medicine
5841 S. Maryland Avenue
Chicago, IL 60637

Year Started Practice


Board Certifications

Thoracic Surgery
Surgical Critical Care

Medical School

Wayne State University School of Medicine


Duke University Medical Center, Durham, NC (general surgery)
Loyola University Medical Center, Maywood, IL (general surgery and cardiothoracic surgery)
Children's Memorial Hospital, Chicago (cardiothoracic surgery)


John H. Stroger Jr., Hospital of Cook County, Chicago (surgical critical care)


American College of Cardiology
American College of Chest Physicians
American College of Surgeons
American Society for Artificial Internal Organs
Chicago Surgical Society
European Association for Cardio-Thoracic Surgery
Illinois Thoracic Surgical Society
International Society for Heart and Lung Transplantation
Society of Critical Care Medicine
Society of Thoracic Surgeons
Ukrainian Medical Association of North America

Language Spoken



Office Phone

(773) 702-2500

Office Fax

(773) 702-4187

Office Postal Address

Vassyl A. Lonchyna, MD
The University of Chicago Medicine
5841 S. Maryland Avenue, MC 5040
Chicago, IL 60637

Physician Photo

Clinical Interests

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Selected Publications

View a partial list of Dr. Lonchyna's publications through the National Library of Medicine's PubMed online database.