John Forrest, Jr, MD

Professor of Medicine; Director, Office of Student Research

Departments & Organizations

Internal Medicine: Nephrology

Downs International Health Student Travel Fellowship

Medical Education Staff

Yale Center for Clinical Investigation (YCCI): Educational Program

Office of Cooperative Research


Dr. John N. Forrest, Jr., MD, a graduate of the University of Pennsylvania School of Medicine, came to Yale as one of Dr. Paul Beeson's last interns in Internal medicine in 1964. He is a Professor of Medicine (Nephrology) and the Director of the Office of Student Research at Yale Medical School. He is a graduate of Ursinus College (1960) which awarded him an Honorary Doctor of Science degree (Sc.D Hon) in 2001. Dr. Forrest has a broad interest in aspects of basic and clinical nephrology. His laboratory's major efforts have been the study of mechanisms of lithium induced nephrogenic diabetes insipidus, the study of water metabolism and acid-base regulation by the kidney, and the study of hormonal signal transduction and potassium and chloride channels in the salt gland of the dogfish shark, an ancient model of the thick ascending limb of the kidney. He is a member of the ASN, ASCI, AAP, AHA and ACCA and is a past president of the Interurban Clinical Club. From 1998 until 2009 he was the Director of the Mount Desert Island Biological Laboratory (MDIBL) in Bar Harbor Maine where he has been an active investigator for 46 years. As Director of the office of Student Research, he began the combined MD-MHS (Masters of Health Sciences), the IPE (Intensive Pedagogical Experience) at MDIBL and the START@Yale program for first year medical students.

Education & Training

MD University of Pennsylvania (1964)
Fellow Yale-New Haven Hospital
Chief Resident Yale-New Haven Hospital
Fellow Yale School of Medicine and VA Hospital
Resident Yale-New Haven Hospital

Honors & Recognition

  • Elected to American Clinical and Climatological Society (2016)

  • Honorary Doctor of Science degreeUrsinus College (2001)

  • elected to American Society for Clinical InvestigationAmerican Society for Clinical Investigation

  • Elected to Association of American PhysiciansAssociation of American Physicians

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Contact Info

John Forrest, Jr, MD
Office Location
E.S. Harkness Memorial Hall
367 Cedar Street, Ste Suite 308

New Haven, CT 06510
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Mailing Address
Internal Medicine367 Cedar St
PO Box 208046

New Haven, CT 06520-8046