![Paul Kotin, M.D.](https://webarchive.library.unt.edu/web/20201218072352im_/https://www.niehs.nih.gov/about/anniversary/pastdirectors/paul_kotin_md.jpg)
Paul Kotin, M.D.
NIEHS Director 1968–1971
![David P. Rall, M.D., Ph.D.](https://webarchive.library.unt.edu/web/20201218072352im_/https://www.niehs.nih.gov/about/anniversary/pastdirectors/david_p_rall_md_phd.jpg)
David P. Rall, M.D., Ph.D.
NIEHS Director 1971–1990
NTP Director 1978–1990
![Kenneth Olden, Ph.D.](https://webarchive.library.unt.edu/web/20201218072352im_/https://www.niehs.nih.gov/about/anniversary/pastdirectors/kenneth_olden_phd.jpg)
Kenneth Olden, Ph.D.
NIEHS and NTP Director
1991–2005
![David A. Schwartz, M.D., M.P.H.](https://webarchive.library.unt.edu/web/20201218072352im_/https://www.niehs.nih.gov/about/anniversary/pastdirectors/david_a_schwartz_md_mph.jpg)
David A. Schwartz, M.D., M.P.H.
NIEHS and NTP Director
2005–2007
![Linda S. Birnbaum, Ph.D., D.A.B.T., A.T.S.](https://webarchive.library.unt.edu/web/20201218072352im_/https://www.niehs.nih.gov/about/anniversary/pastdirectors/linda_s_birnbaum_phd_dabt_ats.jpg)
Linda S. Birnbaum, Ph.D., D.A.B.T., A.T.S
NIEHS and NTP Director
2009–2019
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