About Joshua Metlay, MD, PhD

Dr. Joshua P. Metlay, MD, PhD, is Chief, Division of General Internal Medicine 

Dr. Metlay received his bachelor's degree from Yale University, his PhD in Immunology from Rockefeller University, and his MD from Cornell University Medical College.  He completed residency and chief residency in internal medicine at the University of Pittsburgh and a fellowship in general internal medicine and epidemiology at the Massachusetts General Hospital.  He also received a Master of Science in Health Policy and Management from the Harvard School of Public Health. 

Dr. Metlay's research spans two major areas, the epidemiology of drug resistance among common bacterial respiratory pathogens, particularly S. pneumoniae and the development and evaluation of interventions to improve the quality of treatment decisions for respiratory tract infections.  This research has led to numerous federal grants from NIAID, CDC, and AHRQ and roles on national advisory committees in the area of infectious diseases epidemiology.

Dr. Metlay is dedicated to education and mentorship.  He has been recognized with a number of honors including the Lindback Foundation Award for Distinguished Teaching in 2008 (Pen's highest teaching honor), the Mid-Career Research and Mentorship Award from the Society of General Internal Medicine in 2010, and the Arthur Asbury Outstanding Faculty Mentorship Award from the Perelman School of Medicine at the University of Pennsylvania in 2011. 

Departments, Centers, & Programs:

Clinical Interests:



Mass General Internal Medicine Associates
55 Fruit St.
Wang Ambulatory Care Center
6th Floor
Boston, MA 02114
Phone: 617-724-4600

Mass General Internal Medicine
50 Staniford St.
9th Floor
Boston, MA 02114
Phone: 617-726-2000

Medical Education

  • PhD, Rockefeller University
  • MD, Weill Cornell Medical College
  • Residency, University of Pittsburgh Medical Center
  • Fellowship, Massachusetts General Hospital

American Board Certifications

  • Internal Medicine, American Board of Internal Medicine

Accepted Insurance Plans

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Dr. Metlay's research program is in the fields of clinical epidemiology and health services research, specifically focused on generating and implementing evidence to optimize the management of patients with community-acquired pneumonia. He has led numerous multi-institutional clinical studies, including cluster randomized trials, and has specific expertise in developing methods for primary and secondary data collection, outcome measurement and analysis. His current work is  focused on development, implementation and evaluation of interventions to improve the quality of healthcare and reduce medical errors.


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