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About Jonathan Kay

Jonathan Kay, MD, is Professor of Medicine at the University of Massachusetts Medical School and a Physician at UMass Memorial Medical Center in Worcester, where he directs Clinical Research in the Division of Rheumatology. In fall 2016 Dr. Kay will be invested as the inaugural recipient of the Timothy S. and Elaine L. Peterson Chair in Rheumatology. 

Dr. Kay's clinical interests span the spectrum of rheumatic diseases, with special interest in rheumatoid arthritis, spondyloarthropathies, and other forms of inflammatory arthritis. He was a member of the group that developed the 2010 ACR/EULAR Diagnostic and Classification Criteria for Rheumatoid Arthritis. He chairs the Rheumatology Working Group and is a member of the Internal Medicine and Musculoskeletal Topic Advisory Groups for the World Health Organization in its Revision of the International Classification of Diseases (ICD)-11.

Over the past two decades, his clinical research has focused on nephrogenic systemic fibrosis (formerly known as nephrogenic fibrosing dermopathy), beta 2-microglobulin amyloidosis, and other rheumatologic problems of patients with chronic kidney disease. He has been a principal investigator on over 50 clinical trials of novel therapies for rheumatoid arthritis, ankylosing spondylitis, gout, and osteoarthritis. Over the past several years, he has been involved in the development of biosimilars to treat rheumatic diseases. Dr. Kay lectures internationally and is the author of more than 120 publications and book chapters.


Present Director of Clinical Research, Division of Rheumatology, University of Massachusetts Medical School
Present Professor, University of Massachusetts Medical School Department of Medicine
Present Timothy S. and Elaine L. Peterson Chair in Rheumatology, University of Massachusetts Medical School

Research Interests

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Honors and Awards

  • Charles Burnett Special Recognition Award (for Teaching and Dedication to Resident Education), Department of Medicine, Massachusetts General Hospital (2009)
  • Fellow, American College of Physicians (1992)
  • Fellow, American College of Rheumatology (1990)

Contact Information

Rheumatology Center
UMass Memorial Medical Center, Memorial Campus
119 Belmont Street
Worcester, MA 01605
508-334 -6273


Recent Works (18)

Amyloidosis (1)

Antirheumatic Agents (8)