Photo of James (Jim) Louis Januzzi, MD

James (Jim) Louis Januzzi, MD

  • Roman W. DeSanctis Endowed Distinguished Clinical Scholar in Medicine
  • Director, Dennis and Marilyn Barry Fellowship in Cardiology Research


Accepting New Patients





Centers & Specialties

Heart Center

Vascular Center

Clinical Interests
  • Heart failure
  • Acute coronary syndromes
  • Echocardiography
  • Aortic disease
  • Acute aortic dissection
  • Coronary artery disease
  • Valvular heart disease
Medical Education
  • MD, New York Medical College
  • Residency, Brigham and Women's Hospital
  • Fellowship, Massachusetts General Hospital
Board Certifications
  • Cardiovascular Disease
Foreign Languages
  • Italian
  • Boston: Massachusetts General Hospital
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 - Connecticut
  • OSW - Maine
  • OSW - New Hampshire
  • OSW - New York
  • OSW - Rhode Island
  • OSW - Vermont
  • Private Health Care Systems (PHCS)
  • Railroad Medicare
  • Railroad Medicare - ACD
  • 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. Januzzi has been a member of the Massachusetts General Hospital Cardiology Division since 2000 where he is the Roman W. DeSanctis Endowed Distinguished Clinical Scholar in Medicine.  He is also the Hutter Family Professor of Medicine at Harvard Medical School and is on faculty at the Harvard Clinical Research Institute.

Dr. Januzzi graduated first in his class from New York Medical College in 1994, and subsequently did a residency in Internal Medicine at the Brigham and Women's Hospital, followed by a cardiology and echocardiography fellowship at Massachusetts General Hospital.  Since joining the staff at MGH, Dr. Januzzi is an active clinician, with a focus on acute myocardial infarction, chronic coronary artery disease, acute heart failure, chronic heart failure, and aortic disease.  He is an active teacher, and has a busy research program, with a specific focus on cardiac biomarker testing.  He has published more than 400 manuscripts, and has edited 3 textbooks, and speaks widely on the topic of biomarker testing in heart disease.  He has served as the Cardiology Consultant to the Boston Red Sox since 2005.

Research & Publications

Research Summary

View my most recent research


View my most recent publications at PubMed

Dr. Januzzi has published more than 300 peer reviewed publications, more than 100 review articles and book chapters and has edited three text books.

News & Events

  • Study supports biomarker assay for emergency department diagnosis of acute heart failure

    A multi-institutional study led by a Massachusetts General Hospital physician supports the value of a biomarker to accurately diagnose or rule out acute heart failure in patients seen for shortness of breath at hospital emergency departments.

  • Januzzi first incumbent of Hutter Family Professorship

    James Januzzi, MD, director of the MGH Cardiac Intensive Care Unit, was honored Sept. 8 in a ceremony at Harvard Medical School (HMS) as the first incumbent of the Hutter Family Professorship in Medicine in the Field of Cardiology.

  • Safe passage

    It was a perfect slide into second base. Keith Harris was safe – but a small abrasion on his left leg would prove otherwise.

  • Scholar program established

    At age 81, Roman W. DeSanctis, MD, is one of the hospital’s most veteran and most beloved physicians. To honor the legendary MGH cardiologist, the Roman W. DeSanctis, MD, Endowed Distinguished Scholar in Medicine has been established through the generosity of donor Joan Fu and several others.

  • Biomarker-guided heart failure treatment significantly reduces complications

    Adding regular testing for blood levels of a biomarker of cardiac distress to standard care for the most common form of heart failure may significantly reduce the incidence of cardiovascular complications, a new MGH study finds.

  • Cardiac biomarker levels strongly predict outcome of bypass surgery

    Levels of a biomarker used in the diagnosis of heart attacks are almost universally elevated in patients who have undergone coronary-artery bypass grafting (CABG) and, when markedly elevated, powerfully predict the risk of complications.


Cardiac Unit Associates
55 Fruit Street
Boston, MA 02114-2696
Phone 1: 617-724-6750
Phone 2: 617-726-3443
Fax: 617-643-1620

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