Tom L. Phillips Member (elected 1999)
December 6, 1931 - July 14, 2018

Robert O. Pohl Member (elected 1999)
Cornell University
Primary: 33, Applied Physical Sciences

David E. Pritchard Member (elected 1999)
Massachusetts Institute of Technology
Primary: 13, Physics

Ronald F. Probstein Member (elected 1999)
March 11, 1928 - September 19, 2021

Jeffrey W. Roberts Member (elected 1999)
Cornell University
Primary: 26, Genetics
Secondary: 21, Biochemistry

Vladimir Rokhlin Member (elected 1999)
Yale University
Primary: 32, Applied Mathematical Sciences

Erkki Ruoslahti Member (elected 1999)
Sanford Burnham Prebys Medical Discovery Institute
Primary: 41, Medical Genetics, Hematology, and Oncology
Secondary: 22, Cellular and Developmental Biology

Francisco Mauro Salzano International Member (elected 1999)
July 27, 1928 - September 27, 2018

Richard J. Saykally Member (elected 1999)
University of California, Berkeley
Primary: 14, Chemistry

Barbara A. Schaal Member (elected 1999)
Washington University in St. Louis
Primary: 27, Evolutionary Biology
Secondary: 25, Plant Biology

Matthew P. Scott Member (elected 1999)
Stanford University
Primary: 26, Genetics
Secondary: 22, Cellular and Developmental Biology

Kerry Sieh Member (elected 1999)
Nanyang Technological University
Primary: 15, Geology
Secondary: 16, Geophysics

Louis Siminovitch International Member (elected 1999)
May 1, 1920 - April 6, 2021

Iakov G. Sinai Emeritus (elected 1999)
Princeton University
Primary: 11, Mathematics

Brian Skyrms Member (elected 1999)
University of California, Irvine
Primary: 53, Social and Political Sciences
Secondary: 27, Evolutionary Biology

Norman H. Sleep Member (elected 1999)
Stanford University
Primary: 15, Geology
Secondary: 27, Evolutionary Biology

Elizabeth S. Spelke Member (elected 1999)
Harvard University
Primary: 52, Psychological and Cognitive Sciences

Horst L. Stormer International Member (elected 1999)
Columbia University
Primary: 33, Applied Physical Sciences

Kenneth W. Wachter Member (elected 1999)
University of California, Berkeley
Primary: 53, Social and Political Sciences
Secondary: 32, Applied Mathematical Sciences

David Walker Member (elected 1999)
Columbia University
Primary: 15, Geology

Martin G. Weigert Emeritus (elected 1999)
The University of Chicago
Primary: 43, Immunology and Inflammation

William (Jack) Welch Member (elected 1999)
January 17, 1934 - March 10, 2024

James A. Wells Member (elected 1999)
University of California, San Francisco
Primary: 21, Biochemistry
Secondary: 29, Biophysics and Computational Biology

James E. Womack Member (elected 1999)
March 30, 1941 - August 13, 2023

Yasuyuki Yamada International Member (elected 1999)
Nara Institute of Science and Technology
Primary: 62, Plant, Soil, and Microbial Sciences