Divisiong of Nephrology and Hypertension




Tonja Cross Dirkx, MD

Tonja Cross Dirkx, MD
Associate Professor of Medicine

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Tonja Cross Dirkx, MD

Dr. Dirkx returns to the Division of Nephrology & Hypertension as an Assistant Professor of Medicine. Dr. Dirkx joined OHSU in 1998 as an Internal Medicine Resident and then continued with a Nephrology Fellowship which she completed in April 2004. Dr. Dirkx continued a close relationship with the Nephrology divisions at OHSU and the VAMC during 2004-2005 and the Divisions are pleased to welcome her as a member of the Faculty.


B.S. – Humboldt State University, 1991
M.D. – University of California, Davis, 1998


Internal Medicine – Oregon Health and Sciences University, 1998-2001


Division of Nephrology – OHSU, 2001-2004

Research Interest:

Address the role of the kidney in fetal origins of adult disease using a microswine model of intrauterine growth retardation, which is associated with reduced nephron number and adult hypertension. Interested in the role of the IGF-1 system in conjunction with the intrarenal renin/AngII system in the impaired renal development in utero and in the development of adult hypertension.

Clinical Interest: