Faculty

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General Nephrology & Hypertension Faculty

Ahn, wooin faculty photo

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

Nayan Arora, MD photo

Nayan Arora, M.D., F.A.S.N
Associate Professor of Medicine, School of Medicine
Undergraduate: University of Washington
M.D.: University of Washington School of Medicine 
Residency: University of Washington Affiliated Hospitals
Fellowship: University of Washington Affiliated Hospitals
Academic Interests: Cardiorenal syndrome and diabetic kidney disease

 Rupali Avasare, M.D.

Rupali Avasare, M.D.
Director, Glomerular Disease Program
Associate Professor of Medicine, 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.

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.

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.

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.

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.

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

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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

Cynthia Gaboury MD photo

Cynthia Gaboury, M.D. 
Assistant Professor of Medicine, School of Medicine
Undergraduate: University of Portland
M.D.: Oregon Health & Science University  
Residency: Providence Medical Center
Fellowship: Oregon Health & Science University, Brigham and Women's Hospital
 

Katie Gustafson, nephrology physician

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

Nathan Hocker, MD photo

Nathan Hocker, M.D. 
Assistant Professor, School of Medicine
Undergraduate: Illinois Wesleyan University 
M.D.: Southern Illinois University School of Medicine 
Residency: University of Iowa
Fellowship: Oregon Health & Science University
Academic interests: General nephrology, critical care, and medical education

Briana Kjornes, P.A.-C.

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.

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

Nupur Mistry, MD photo

Nupur Mistry, M.D. 
Assistant Professor, School of Medicine
Undergraduate: University of Washington 
M.D.: Saint Louis University School of Medicine 
Residency: University of Chicago Department of Medicine
Fellowship: University of Chicago Section of Endocrinology, University of Chicago Section of Nephrology
Academic interests: Hypertension, chronic kidney disease

Ali Olyaei, Pharm.D.

Ali Olyaei, Pharm.D.
Professor of Medicine, School of Medicine 
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

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

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.

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

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

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.

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.

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

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

Faculty Photo, Zoha Ahmad

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
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Languages spoken: English and Urdu

Teardaad Makarachi Photo

Teardaad Makarachi, P.A.-C.
Instructor of Medicine, School of Medicine
Undergraduate: Arizona State University 
M.S.P.A.S.: Le Moyne College  
Academic interests: Transplantation, Hypertension

Douglas Norman, M.D.

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

Faculty Photo

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

Shehzad Rehman, M.D.

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

Carley A. Shaut, Ph.D.

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

Justin Smith, MD

Justin Smith, M.D. 
Assistant Professor of Medicine, School of Medicine
Undergraduate: University of Southern Mississippi
M.D.: University of Mississippi Medical Center
Residency: University of Mississippi Medical Center (Internal Medicine)
Fellowship: Oregon Health and Science University (Nephrology, Transplant)
Academic interests: Transplantation, Aging transplant population

Megan Stack, FNP Photo

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

Research Faculty

Ryan Cornelius, Ph.D.

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

Jessica Hebert Photo

Jessica F. Hebert, Ph.D.
Instructor of Medicine, School of Medicine
Undergraduate: Minnesota State University-Moorhead
Ph.D.: Portland State University 
Postdoctoral Fellowship: (1) OHSU Ob/Gyn, (2) OHSU Anesthesiology & Perioperative Medicine
Academic interests: Long-term effects of acute kidney injury on pregnancy, fetal development, and future maternal and offspring health

Peter Mayinger, Ph.D.

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.

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.

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.

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

Emeritus Faculty

Sharon Anderson

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)
 

Bagby, Susan MD

Susan Bagby, M.D.
Professor Emeritus, OHSU School of Medicine
Undergraduate: University of Texas
M.D.: Baylor College of Medicine
Residency: University of California San Diego School of Medicine
Fellowship: University of California San Diego School of Medicine, Oregon Health & Science University
 

Parker, Richard MD

Richard Parker, M.D., F.A.C.P
Professor Emeritus, OHSU School of Medicine
Undergraduate: Indiana University 
M.D.: Indiana University School of Medicine
Residency: Oregon Health & Science University
Fellowship: Oregon Health & Science University