Photo of Ari (Ari) Rishon Cohen, MD

Ari (Ari) Rishon Cohen, MD

  • Chief, Division of Pediatric Emergency Medicine


Accepting New Patients


Dr. Ari R. Cohen M.D., is an attending physician at the Emergency Medicine Department of Massachusetts General Hospital.


Emergency Medicine


Centers & Specialties

MassGeneral Hospital for Children

Clinical Interests
  • Pediatric Respiratory illness
  • Pediatric Head Trauma
Medical Education
  • MD, University of Chicago Pritzker School of Medicine
  • Residency, Mount Sinai Hospital Medical Center
  • Fellowship, Children's Hospital Boston
Board Certifications
  • Pediatrics
  • Pediatric Emergency Medicine
  • 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
  • Centene/Celticare
  • 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
  • Medicaid
  • Medicare
  • Medicare - ACD
  • Neighborhood Health Plan - ACD
  • Neighborhood Health Plan - PBO
  • OSW - Connecticut
  • OSW - Maine
  • OSW - New Hampshire
  • OSW - Rhode Island
  • Private Health Care Systems (PHCS)
  • Senior Whole Health
  • TriCare
  • Tufts Health Plan
  • Unicare
  • United Healthcare (non-HMO) - ACD
  • United Healthcare (non-HMO) - PBO
Patient Age Group

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Dr. Ari Cohen M.D., is an attending physician in the division of Pediatric Emergency Medicine at Massachusetts General Hospital. He graduated from University of Chicago, Pritzker School of Medicine. He then completed his pediatric residency at Mount Sinai Hospital in New York. Dr. Cohen completed a fellowship in pediatric emergency at Boston Children's Hospital. Dr. Cohen is currently an instructor of pediatric medicine at Harvard Medical School.

Dr. Cohen currently focuses on emergency department operations and efficiency, specifically on the administrative and clinical management of the pediatric ED. Dr. Cohen assists in the development of clinical programs, procures new equipment, and acts as the liaison to the Department of Pediatrics. He has led the division effectively for 4 years. Under his lead, the EM pediatric division has matured and excelled. Dr. Cohen has overseen the pediatric ED's efforts to expand its educational role and outreach into the community and surrounding hospitals. He is involved with the construction of the new pediatric treatment area within the MGH ED.

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Research & Publications

Research Summary

Dr. Cohen has active research interests in both respiratory illness and head trauma and continues to investigate these subjects.

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News & Events


  • HAZMAT Team Training Slideshow

    View a slideshow with scenes from an early morning exercise that the MGH HAZMAT team members participated in.

  • Celebrating 200 Years: 1811 - 2011

    Since 1811, people have counted on Mass General for answers, innovations and medical leadership. As our third century dawns, we remain ready to serve.

  • Frank Robinson's Story

    Watch 46-year-old Frank Robinson tell the story of his life-saving experience at Mass General after a massive coronary.


Pediatric Emergency Services
55 Fruit Street
Boston MA, 02114-2696
Phone: 617-726-7622
Fax: 617-724-0917

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