Dr. Baggish is the Director of the Cardiovascular Performance Program at the Massachusetts General Hospital Heart Center. He serves as team cardiologist / physician for numerous athletic organizations including US Soccer, US Rowing, Harvard University Athletics,  New England Patriots, Boston Bruins, New England Revolution, and is medical director for the BAA Boston Marathon.




Centers & Specialties

Heart Center

Clinical Interests
  • Sports Cardiology
  • Athlete's heart
  • Anabolic steroids and heart disease
  • Hypertrophic cardiomyopathy
  • High altitude travel and heart disease
Medical Education
  • MD, University of Connecticut School of Medicine
  • Residency, Massachusetts General Hospital
  • Fellowship, Massachusetts General Hospital
Board Certifications
  • Cardiovascular Disease
  • Boston: Massachusetts General Hospital
Patient Gateway
Yes, learn more
Insurances Accepted
  • Aetna Health Inc.
  • Beech Street
  • Blue Cross Blue Shield - Blue Care 65
  • Blue Cross Blue Shield - Indemnity
  • Blue Cross Blue Shield - Managed Care
  • Blue Cross Blue Shield - Partners Plus
  • Cigna (PAL #'s)
  • Fallon Community HealthCare
  • Great-West Healthcare (formally One Health Plan)
  • Harvard Pilgrim Health Plan - ACD
  • Harvard Pilgrim Health Plan - PBO
  • Health Care Value Management (HCVM)
  • Humana/Choice Care PPO
  • MassHealth
  • Medicare
  • Medicare - ACD
  • Neighborhood Health Plan - ACD
  • Neighborhood Health Plan - PBO
  • OSW - Maine
  • OSW - New Hampshire
  • OSW - Rhode Island
  • OSW - Vermont
  • Private Health Care Systems (PHCS)
  • Railroad Medicare
  • Senior Whole Health
  • TriCare
  • Tufts Health Plan
  • Unicare
  • United Healthcare (non-HMO) - ACD
  • United Healthcare (non-HMO) - PBO

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

Patient Age Group


Dr. Baggish received his medical degree from the University of Connecticut School of Medicine and then completed internal medicine training and cardiovascular fellowship at the Massachusetts General Hospital. His on-going research focuses on heart function and heart disease in athletic individuals. He is the Director of the Cardiovascular Performance Program, a Massachusetts General Hospital Heart Center program that provides clinical care and exercise testing for active individuals. Dr. Baggish is medical director for the Boston Marathon and serves as team cardiologist for the New England Patriots, the Boston Bruins, the New England Revolution, US Men's and Women's Soccer, and US Rowing.

Research & Publications

Research Summary

Dr. Baggish overseas research and the Cardiovascular Performance Program. The CPP research team focuses on studying cardiovascular adaptations to exercise as they apply to health, disease, and human performance.


View my most recent publications at PubMed

SELECTED PUBLICATIONS (see PubMed link for complete listing)

Baggish AL, et al. Training-Specific Changes in Cardiac Structure and Function: A Prospective and Longitudinal Assessment of Competitive Athletes. J Appl Physiol. 2008

Baggish AL, et al. The Impact of Endurance Exercise Training on Left Ventricular Systolic Mechanics. Am J Physiol Heart Circ Physiol. 2008

Baggish AL et al.,  Cardiovascular Screening in College Athletes With and Without ElectrocardiographyA Cross-sectional Study. Annals of Internal Med. 2010

Kim JH, et al., Baggish AL. Cardiac Arrests during Long-Distance Running Races. N Engl J Med. 2012.

 Weiner RB, et al. Baggish AL. Blood Pressure and Left Ventricular Hypertrophy During American Style Football Participation. Circulation. 2013

 Zilinski J, et al., Baggish AL. Myocardial adaptations to recreational marathon training among middle-aged men. Circulation: Cardiovascular Imaging. 2015

 Baggish AL, Weiner RB, Kanayama G, Hudson JI, Lu MT, Hoffmann U, Pope HG Jr. Cardiovascular Toxicity of Illicit Anabolic-Androgenic Steroid Use. Circulation. 2017

News & Events

  • #ACC18: A Twitter Roundup

    Health care professionals at this year’s American College of Cardiology Scientific Session and Expo discussed late-breaking research, innovative treatment approaches and brand new guidelines. The conversations carried over from the podium and conference halls onto Twitter.

  • Research Roundup February 2018

    Research at the MGH is interwoven throughout more than 30 departments, centers and units and is conducted with the support and guidance of the MGH Research Institute. The Research Roundup is a monthly series highlighting studies, news and events.

  • New Mass General research shows chronic anabolic steroid use may damage heart, arteries

    “Every practicing cardiologist should be thinking about steroid use as potential patient risk factor for heart disease,” says Aaron Baggish, MD, associate director of the Massachusetts General Hospital (MGH) Cardiovascular Performance Program. Baggish is the co-lead author of new research indicating chronic anabolic-androgenic steroid use may be damaging to the heart and the coronary arteries.

  • Widening the field

    Aaron Baggish, MD, associate director of the Cardiovascular Performance Program at the Massachusetts General Hospital Corrigan Minehan Heart Center studied the effects of strength training of the hearts of NFL players.

  • Fountain of Youth in Running

    Aaron Baggish, MD, director of the Massachusetts General Hospital Cardiovascular Performance Program in the Institute for Heart, Vascular and Stroke Care, discusses the benefits of exercise at any age.

  • Heart smarts

    In recognition of American Heart Month, MGH physicians share their tips for the best ways to "love your heart."

  • Playing college football linked with high blood pressure risk

    College football players, especially linemen, may develop high blood pressure over the course of their first season, according to a small study in the American Heart Association’s journal Circulation.

  • CPR training empowers marathoners

    Marathon runners, family members and spectators will have the opportunity to attend the first-ever CPR educational sessions on April 14 and 15 as part of the Boston Athletic Association’s (BAA) Health and Fitness Expo and led by Aaron Baggish, MD, associate director of the Cardiovascular Performance Program in the MGH Heart Center and an on-site cardiologist for the marathon.

  • Participating in marathons, half-marathons not found to increase risk of cardiac arrest

    A new study finds that participating in these races actually is associated with a relatively low risk of cardiac arrest, compared to other forms of athletics. The study also identifies bystander-initiated cardiopulmonary resuscitation as a key factor in patient survival.

  • Heart Abnormalities the Leading Cause of Sudden Deaths in Athletes

    Approximately 200-300 adolescents and young adults die every year from partaking in sporting activities in the United States. While heat exposure, dehydration and overexertion are common causes, far and away the most common reason is that the person had some previously undiagnosed heart condition.

  • Long-term anabolic steroid use may weaken heart more than previously thought

    Long-term anabolic steroid use may weaken the heart more than previously thought and may increase the risk of heart failure, according to a study led by MGH investigator Aaron Baggish, MD.

  • Adding ECG to health exams may prevent sudden cardiac death in young athletes

    A new study by researchers at the MGH Heart Center found the addition of electrocardiogram testing to the standard medical history and physical examination for young athletes may better identify key cardiovascular abnormalities responsible for sports-related sudden death.



Cardiac Unit Associates
55 Fruit Street
Boston, MA 02114-2696
Phone: 617-643-7117
Fax: 617-643-7222