About Tim Churchill, MD

Timothy Churchill, MD, is a cardiologist at Massachusetts General Hospital and an Instructor at Harvard Medical School.

Dr. Churchill specializes in evaluating and treating heart disease in athletes and physically active individuals. His clinical practice is focused on sports cardiology and cardiac ultrasound. He is a member of the Cardiovascular Performance Program, a program within the Massachusetts General Hospital Heart Center that provides clinical care and exercise testing for active individuals. He believes strongly in a patient-centered approach to care and sharing the process of medical decision-making with the patient. 

Dr. Churchill's research interests center on the impact of exercise on the heart, and he has authored recent publications in JAMA Cardiology, the Journal of the American College of Cardiology, and Circulation: Cardiovascular Imaging. 

Dr. Churchill received his medical degree from the University of Pennsylvania. He completed his residency in internal medicine at the Brigham and Women's Hospital and cardiology training including advanced fellowships in sports cardiology and echocardiography (heart ultrasound) at Massachusetts General Hospital. 

When Dr. Churchill is not at Mass General, he enjoys spending time outside with his family. He is also a dedicated runner. 


Departments, Centers, & Programs:

Clinical Interests:




Mass General Heart Center
55 Fruit St.
Boston, MA 02114
Phone: 866-644-8910

Medical Education

  • MD, University of Pennsylvania
  • Residency, Brigham and Women's Hospital
  • Fellowship, Massachusetts General Hospital

American Board Certifications

  • Cardiology, National Board of Echocardiography
  • Cardiovascular Disease, American Board of Internal Medicine
  • Internal Medicine, American Board of Internal Medicine

Accepted Insurance Plans

Note: This provider may accept more insurance plans than shown; please call the practice to find out if your plan is accepted.


Dr. Churchill conducts research as a member of the Cardiovascular Performance Program research group and is focused on studying cardiovascular adaptations to exercise as they apply to health, disease, and human performance. He also maintains an active program studying clinical outcomes and physiology of valvular heart disease. 


  • Guseh JS and Churchill TW, et al. An Expanded Repertoire of Intensity-Dependent Exercise-Responsive Plasma Proteins Tied to Loci of Human Disease Risk. Scientific Reports. 2020.

    Churchill TW, et al. Echocardiographic Features of COVID-19 Illness and Association with Cardiac Biomarkers. Journal of the American Society of Echocardiography. 2020

    Churchill TW, et al. Training-Associated Changes in Ventricular Volumes and Function in Elite Female Runners. Circulation: Cardiovascular Imaging. 2020

    Churchill TW, et al. Association of Ascending Aortic Dilatation and Long-Term Endurance Exercise Among Older Masters-Level Athletes. JAMA Cardiology. 2020

    Churchill TW, et al. Exercise-induced cardiac remodeling during adolescence. European Journal of Preventive Cardiology. 2019

    Churchill TW, et al. Diagnostic Yield of Customized Exercise Provocation Following Routine Testing. American Journal of Cardiology. 2019

    Churchill TW, et al. Weight Gain and Health Affliction Among Former National Football League Players. American Journal of Medicine. 2018.


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