Faculty
![OHSU image](/sites/default/files/2019-06/banner-0295%20faculty_0.jpg)
Division of Nephrology & Hypertension Faculty
General Nephrology & Hypertension Faculty
![Ahn, wooin faculty photo](/sites/default/files/2023-07/Ahn%2C%20Wooin%20Faculty%20photo.jpg)
Wooin Ahn, M.D., Ph.D.
Associate Professor of Medicine, School of Medicine
M.D.: Yonsei University
Ph.D.: Yonsei University
Residency: St. Luke’s Hospital
Fellowship: Brigham and Women's Hospital/Massachusetts General Hospital (Clinical), Columbia University (Glomerular)
Academic Interests: Glomerular disease
![Sharon Anderson](/sites/default/files/2019-06/Anderson%2C%20Sharon_0.jpg)
Sharon Anderson, M.D.
Dean and Professor Emeritus, OHSU School of Medicine
Undergraduate: University of Maryland
M.D.: Louisiana State University Medical Center
Residency: Oregon Health & Science University
Fellowship: Beth Israel Hospital (Clinical), Brigham and Women's Hospital (Research)
Academic Interests: The renin angiotensin aldosterone system in CKD
![Rupali Avasare, M.D.](/sites/default/files/2021-10/Avasare%2C%20Rupali%20%282016%29.jpg)
Rupali Avasare, M.D.
Director, Glomerular Disease Program
Associate Professor, School of Medicine
Undergraduate: Massachusetts Institute of Technology
M.D.: New York University School of Medicine
Residency: Columbia University
Fellowship: Columbia University (Clinical and Glomerulonephritis)
Academic Interests: Glomerulonephritis clinical outcomes
![Pavan Chopra, M.D.](/sites/default/files/2021-10/Chopra%2C%20Pavan%20%282013%29_0.jpg)
Pavan Chopra, M.D., M.S.
Director, Quality and Safety for the OHSU Department of Medicine Ambulatory Practice
Director, OHSU Dialysis Outpatient Services
Associate Professor of Medicine, School of Medicine
Undergraduate: University of Illinois Urbana-Champaign
M.D.: Rush University
Residency: Rush University
Fellowship: University of Michigan
Academic interests: Dialysis outcomes and quality improvement
![David Cohen, M.D.](/sites/default/files/2021-12/Cohen%2C%20David_21%20%28250w%29.jpg)
David Cohen, M.D.
Associate Chief of Staff for Research and Development at VA Portland Health Care System
Professor of Medicine, School of Medicine
Undergraduate: Pennsylvania State University
M.D.: Jefferson Medical College of Thomas Jefferson University
Residency: Boston University Medical Center
Fellowship: Brigham and Women’s Hospital (Clinical), HHMI, Division of Genetics, Harvard University (Research)
Academic interests: Genetic factors in systemic water balance, clinical disorders of water and electrolyte balance, and pathophysiology of diabetic nephropathy
![Tonja Dirkx, M.D.](/sites/default/files/2021-10/Dirkx%2CTonja%20%282008%29.jpg)
Tonja Dirkx, M.D.
Section Chief, VA Portland Health Care System, Nephrology Section
Medical Director, VA Portland Dialysis Unit
Associate Professor of Medicine, School of Medicine
Undergraduate: Humboldt State University
M.D.: University of California at Davis
Residency: Oregon Health & Science University
Fellowship: Oregon Health & Science University
Academic Interests: Dialysis and bone-mineral disease management
![David Ellison, M.D.](/sites/default/files/2021-10/Ellison%2C%20David%20250w.jpg)
David Ellison, M.D.
Director, Oregon Clinical and Translational Research Institute
Associate Vice President for Clinical & Translational Research
Professor of Medicine, School of Medicine
Undergraduate: Stanford University
M.D.: Rush Medical College
Residency: Oregon Health & Science University
Fellowship: Yale University (Clinical), Oregon Health & Science University (Research)
Academic interests: Interactions between diet, genes, and aldosterone in causing and treating high blood pressure, and causes and treatment of diuretic resistance and kidney tubule remodeling
![Shannon Fay, P.A.-C.](/sites/default/files/2021-10/Fay%2C%20Shannon%20%282013%29.jpg)
Shannon Fay, P.A.-C.
Instructor of Medicine, School of Medicine
Undergraduate: Washington State University
P.A.-C.: Oregon Health & Science University
Academic interests: Nephrology and hypertension
![Peter Fong, MD photo](/sites/default/files/2024-01/Peter%20Fong%20250x282.jpg)
Peter S. Fong, M.D., Pharm.D.
Assistant Professor of Medicine, School of Medicine
Undergraduate: Creighton University College of Arts and Sciences
Pharm.D.: Creighton University
M.D.: Oregon Health & Science University
Residency: Oregon Health & Science University
Fellowship: Oregon Health & Science University
Academic Interests: Critical care nephrology and pharmacology
![Katie Gustafson, nephrology physician](/sites/default/files/2020-03/Gustafson_Katie250x350cropped.jpg)
Katie Gustafson, M.D.
Renal Clinic Director, Portland VA Medical Center
Assistant Professor of Medicine, School of Medicine
Undergraduate: Harvard University
M.D.: Virginia Commonwealth University
Residency: Oregon Health & Science University
Fellowship: Oregon Health & Science University
Academic interests: Chronic kidney disease and geriatric nephrology
![Briana Kjornes, P.A.-C.](/sites/default/files/2022-08/Kjornes%2C%20Briana_22%20250w.jpg)
Briana Kjornes, P.A.-C.
Instructor of Medicine, School of Medicine
Undergraduate: Sonoma State University
M.P.A.S.: Oregon Health & Science University
Academic interests: Geriatric Nephrology and ESRD
![Zhongfeng Liu, P.A.-C.](/sites/default/files/2021-10/Liu%2C%20Zhongfeng%20%282016%29.jpg)
Zhongfeng Liu, P.A.-C.
Instructor of Medicine, School of Medicine
Undergraduate: Shandong University School of Chinese Traditional Medicine (China)
M.Med.: Shanghai University School of Chinese Traditional Medicine (China)
M.S.: Rocky Mountain College PA Program
Academic interests: Dialysis care, chronic kidney disease and hypertension
![Ali Olyaei, Pharm.D.](/sites/default/files/2021-10/Olyaei%2C%20Ali%20250w.jpg)
Ali Olyaei, Pharm.D.
Professor of Medicine, Division of Nephrology & Hypertension
Undergraduate: Oregon State University
Pharm.D.: University of Kansas
Residency: University of Kansas
Internship: Salem Hospital
Academic interests: Drug dosing in kidney disease and complications of long-term use of immunosuppressive drugs
![Oliver Padgett, MD photo](/sites/default/files/2024-01/Padgett%2C%20Oliver%20250x298_1.jpg)
Oliver Padgett, M.D.
Associate Fellowship Program Director, Division of Nephrology & Hypertension
Assistant Professor of Medicine, School of Medicine
Undergraduate: Occidental College
M.D.: University of Arizona
Residency: Oregon Health & Science University
Fellowship: Oregon Health & Science University
Academic Interests: General nephrology, nephrology education, and community outreach
![Robert Rope](/sites/default/files/2019-06/Rope%2C%20Rob%20%281%29.jpg)
Rob Rope, M.D.
Medical Director, Ambulatory Clinic
Assistant Professor of Medicine, School of Medicine
Undergraduate: Whitman College
M.D.: Oregon Health & Science University
Residency: Oregon Health & Science University
Fellowship: Stanford University
Academic interests: Hypertension, medical education, and politics in medicine.
![Jose Rueda, M.D.](/sites/default/files/2021-12/Rueda%2C%20Jose%2021%20%28250w%29.jpg)
Jose Rueda, M.D.
Associate Professor of Medicine, School of Medicine
M.D.: Pontificia Universidad Javeriana, Bogota, Colombia
Residency: Washington University in St. Louis
Fellowship: Washington University in St. Louis
Academic interests: Secondary causes of hypertension and glomerular diseases
![Eric Ryan Faculty Photo](/sites/default/files/2023-08/Ryan%2C%20Eric%20250x275.jpg)
Eric Ryan, M.D.
Assistant Professor of Medicine, School of Medicine
Undergraduate: University of Colorado
M.D.: University of Colorado
Residency: Providence Portland Medical Center
Fellowship: Oregon Health and Science University
Academic interests: Critical care, medical education, pregnancy and renal disease, quality improvement.
![Avantika Saleen, MPAS, PA-C](/sites/default/files/2022-07/Saleen%20250w.jpg)
Avantika Saleen, P.A.-C.
Instructor of Medicine, School of Medicine
Undergraduate: University of Texas at Austin
M.P.A.S.: Hardin-Simmons University
Academic Interests: Dialysis care and hypertension
![Jessica Weiss, M.D., M.C.R.](/sites/default/files/2022-07/Weiss%2022-250w.jpg)
Jessica Weiss, M.D., M.C.R.
Fellowship Program Director, Division of Nephrology & Hypertension
Medical Director, HMC Inpatient Nephrology Service
Associate Professor of Medicine, School of Medicine
Undergraduate: Syracuse University
M.D.: Southern Illinois University School of Medicine
Residency: Oregon Health & Science University
Fellowship: Oregon Health & Science University
M.C.R.: Oregon Health & Science University
Academic interests: Kidney disease and hypertension in older adults
![Raghav Wusirika, M.D.](/sites/default/files/2021-12/Wusarika%2C%20Raghav_21%20%28250w%29.jpg)
Raghav Wusirika, M.D., M.B.A.
Interim Chief, Division of Nephrology & Hypertension
Medical Director, OHSU Inpatient Dialysis Unit
Associate Professor of Medicine, School of Medicine
Undergraduate: Case Western University
M.D.: Ohio State University
Residency: University of North Carolina at Chapel Hill
Fellowship: University of Michigan
Academic interests: Vascular access management and estimating GFR in kidney transplant donors
Transplant Faculty
![Angelo de Mattos, transplant nephrologist and director of transplant medicine](/sites/default/files/2020-03/De%20Mattos%2C%20Angelo_20_crop.250x285.jpg)
Angelo de Mattos, M.D., M.P.H.
Clinical Director, Kidney Transplantation Medicine at OHSU
Professor of Medicine, School of Medicine
M.D.: Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
Residency: Nephrology - Hospital dos Servidores do Rio de Janeiro
Internal Medicine - University of Miami – Jackson Memorial Medical Center
Fellowship: Oregon Health & Science University
M.P.H.: Oregon State University/Portland State University
Academic interests: Transplant allocation
![Douglas Norman, M.D.](/sites/default/files/2021-10/Norman%2C%20Douglas%20%282018%29.jpg)
Douglas Norman, M.D.
Director, Immunogenetics Laboratory
Professor of Medicine, School of Medicine
Undergraduate: Stanford University
M.D.: University of Washington
Residency: University of California at San Francisco, Beth Israel Hospital
Fellowship: Brigham and Women’s Hospital (general nephrology and transplant immunology)
Academic interests: Role of donor specific antibodies in transplant outcomes, flow cytometric cross-matching to predict rejection, and tailoring immunosuppression to patients needs
![Shehzad Rehman, M.D.](/sites/default/files/2021-10/Rehman%2C%20Shehzad%20250w.jpg)
Shehzad Rehman, M.D.
Director, Pancreas Transplantation Medicine at OHSU
Transplant Nephrology Fellowship Program Director
Associate Professor of Medicine, School of Medicine
M.D.: King Edward Medical College, Lahore Pakistan
Residency: University of Oklahoma
Fellowship: Wayne State (Clinical), University of Florida (Transplant)
Academic interests: BK virus nephropathy and high immunological risk transplantation
![Faculty Photo](/sites/default/files/2023-07/Pandav%2C%20Jay%20VI.jpg)
Jay Pandav, M.D.
Assistant Professor of Medicine, School of Medicine
M.D.: Topiwala National Medical College
Fellowship: Harvard Medical School at Massachusetts General Hospital/Brigham and Women’s Hospital; Nephrology, Icahn School of Medicine at Mount Sinai Hospital; Nephrology
Academic Interests: : BK virus nephropathy, dyslipidemia in kidney transplant, living donor kidney transplantation
![Carley A. Shaut, Ph.D.](/sites/default/files/2021-10/Shaut%2C%20Carley%20%282018%29.jpg)
Carley A. Shaut, Ph.D.
Technical Director, OHSU Laboratory of Immunogenetics & Transplantation
ASHI Co-Director, OHSU Laboratory of Immunogenetics & Transplantation
Assistant Professor of Medicine, School of Medicine
Undergraduate: George Fox University
Ph.D.: Oregon Health & Science University
Academic interests: Genetics, histocompatibility, and immunogenetics
![Megan Stack, FNP Photo](/sites/default/files/2024-02/Megan%20Stack%20blank%20photo%20250x275.png)
Megan Stack, F.N.P.
Instructor of Medicine, School of Medicine
Undergraduate: Fordham University
B.S.N.: Pace University
M.S.N.: Pace University
Academic interests: Transplantation
![Faculty Photo, Zoha Ahmad](/sites/default/files/2023-05/Ahmed%2C%20Zoha_23-3.jpg)
Zoha Ahmad, P.A.-C.
Instructor of Medicine, School of Medicine
Undergraduate: Oregon State University
M.P.A.S.: Philadelphia College of Osteopathic Medicine
Academic interests: Transplantation and access to healthcare.
Languages spoken: English and Urdu
Research Faculty
![Ryan Cornelius, Ph.D.](/sites/default/files/2021-10/Cornelius%2C%20Ryan%20%282020%29.jpg)
Ryan Cornelius, Ph.D.
Assistant Professor of Medicine, School of Medicine
Undergraduate: Minnesota State University
Ph.D.: University of Nebraska Medical Center
Fellowship: OHSU Division of Nephrology and Hypertension
Academic interests: COP9 signalosome regulation of cullin-RING ligases in kidney, hypertension, and kidney disease
![Peter Mayinger, Ph.D.](/sites/default/files/2021-10/Mayinger%2C%20Peter%20%282003%29.jpg)
Peter Mayinger, Ph.D.
Associate Professor of Medicine, School of Medicine
Undergraduate: Technical University (Munich, Germany)
Ph.D.: Ludwig Maximilans University (Munich, Germany)
Ph.D.: Heidelberg University (Heidelberg, Germany)
Fellowship: University of California, Los Angeles (Biological Chemistry)
Academic Interests: Membranes and sorting, cell signaling, cell proliferation and differentiation, lipid signaling disorders, and cell proliferative diseases
![James McCormick, Ph.D.](/sites/default/files/2021-11/McCormick%2C%20Jim%20%282021%29%20250w.jpg)
James McCormick, Ph.D.
Associate Professor of Medicine, School of Medicine
Undergraduate: University of Edinburgh (UK)
Ph.D.: University of Edinburgh (UK)
Fellowship: University of California, San Francisco (Nephrology)
Academic Interests: Mouse models to examine mechanisms of blood pressure regulation
![Jonathan Nelson, Ph.D.](/sites/default/files/2021-11/Nelson%2C%20Jonathan_21_250w.jpg)
Jonathan Nelson, Ph.D.
Instructor, School of Medicine
Undergraduate: University of Washington
Ph.D.: Oregon Health & Science University
Postdoctoral Fellowship: Oregon Health & Science University
Academic Interests: Pericytes, Microvasculature, Renin-Angiotensin-System, Optical Clearing, Single-Cell RNA Sequencing
![Chao-Ling Yang, M.D.](/sites/default/files/2021-10/Yang-Chao-ting%20250w.jpg)
Chao-Ling Yang, M.D.
Associate Professor of Medicine, School of Medicine
M.D.: Nafan Medical University
Fellowship: Yale University School of Medicine (Nephrology)
Academic Interests: Mechanisms by which WNK kinases modulate renal transporters and how mutations of WNK kinases cause human hypertension