Raymond Johnson, MD, PhD

Associate Professor of Medicine (Infectious Diseases) and of Microbial Pathogenesis

Departments & Organizations

Internal Medicine: Infectious Diseases

Microbial Pathogenesis

Yale Medicine


I received my M.D. and Ph.D. from the University of Chicago in the Medical Scientist Training Program (MSTP). My Ph.D. was from the Department of Molecular Genetics and Cell Biology on the pathogenesis of Herpes simplex virus; followed by medical residency and Infectious Diseases training was at Washington University in St. Louis where I was a Howard Hughes Research Fellow. I joined the Indiana University faculty in 2001 to work on Chlamydia pathogenesis, which remains my research focus to the present day.

Education & Training

MD University of Chicago Pritzker School of Medicine (1992)
PhD University of Chicago (1989)
Infectious Diseases fellowship Washington University
Internal Medicine residency Washington University


  • Research New Haven, United States (2015)

    Chlamydia pathogenesis

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Contact Info

Raymond Johnson, MD, PhD
Patient Care Location
Orchard Medical Center
330 Orchard Street, Ste 116

New Haven, CT 06511
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Mailing Addresses
PO Box 208022
Section of Infectious Diseases

New Haven, CT 06520-8022
Section of Infectious Disease
1 Gilbert St

New Haven, CT 06519

Curriculum Vitae

Two CD8 T cells attacking an infected epithelial cell

EM photo of a Chlamydia-specific CD8 T cell clone attacking an infected epithelial cell. The Chlamydia inclusion is visible in the epithelial cell opposite the nucleus. Arrow identifies a T cell granule.