Patrick D. Walker, MD renal pathologist at arkana laboratories

Patrick D. Walker, MD Founder,
Nephropathologist

About

Dr. Patrick D. Walker is the founder of Arkana Laboratories and has more than 40 years of experience in the interpretation of native kidney and renal allograft biopsies. Before founding Arkana Laboratories, Dr. Walker was Chief of the Department of Pathology and Laboratory Medicine at the John L. McClellan Veterans Administration Hospital, Vice-Chairman of the Department of Pathology and Laboratory Medicine at the University of Arkansas for Medical Sciences (1991-2002), and on faculty in the Department of Pathology at Tulane University (1978-1991). Dr. Walker has a passion for advancing the understanding of disease and has authored more than 100 peer-reviewed research articles. He has been the principal investigator or co-principle investigator on more than 20 research grants, published multiple book chapters, lectured and participated in grand rounds and conferences in the United States and internationally, and has received numerous teaching, research, and service awards. Despite his extensive academic endeavors, he has remained actively committed to clinical work, interpreting biopsies and communicating patient results to our nephrologists daily.  Dr. Walker’s best times outside of work are spent with his wife being “Papa” and “Gigi” to their grandchildren.

Dr. Walker is a member of the American Society of Nephrology, the College of American Pathologists, the International Society of Nephrology, the National Kidney Foundation, the Renal Physicians Association, the Renal Pathology Society, and the United States and Canadian Academy of Pathology.

Education & Stats

Our fellowship-trained pathologists have decades of experience interpreting biopsies.

Download CV
Founded Arkana Laboratories 2001
Doctor of Medicine Indiana University School of Medicine
Pathology Residency Indiana University Medical Center
American Cancer Society Surgical Pathology Fellow University of Minnesota Hospitals
Board Certification American Board of Pathology

Publications by Patrick D. Walker, M.D.

Shiga toxin targets the podocyte causing hemolytic uremic syndrome through… Shiga toxin targets the podocyte causing hemolytic…

By Bowen EE, Hurcombe JA, Barrington F, Keir LS, Farmer LK, Wherlock MD, Ortiz-Sandoval CG, Bruno V, Bohorquez-Hernandez A, Diatlov D, Rostam-Shirazi N, Wells S, Stewart M,…

October 2023

  • The podocyte is likely the reason Shiga toxin targets the…

    • The podocyte is likely the reason Shiga toxin targets the glomerulus in STEC-HU
    • Podocyte-to-glomerular endothelial cell…

Read on cell.com

Clinicopathological Characteristics of Adult IgA Nephropathy in the United States Clinicopathological Characteristics of Adult IgA…

By Caster DJ, Abner CW, Walker PD, Wang K, Heo J, Rava AR, Bunke M

June 2023

IgA nephropathy (IgAN) is a progressive autoimmune kidney disease and a leading cause of glomerular disease that can…

IgA nephropathy (IgAN) is a progressive autoimmune kidney disease and a leading cause of glomerular disease that can result in kidney failure (KF). The median age at diagnosis is 35 to 37 years and approximately 50% of patients will progress to KF…

Read on kirereports.org

Traditional Indigenous Medicines Are An Etiologic Consideration For… Traditional Indigenous Medicines Are An Etiologic…

By Kurien AA, Jansi Prema KS, Walker PD, Caza TN

September 2022

Traditional indigenous medicines (TIM) are founded on ancient historical practice. These medications are obtained over…

Traditional indigenous medicines (TIM) are founded on ancient historical practice. These medications are obtained over the counter, vary in composition, and contain heavy metals. Their use may not be documented within medical records, and therefore,…

Read on PubMed

Increasing Incidence Of Inadequate Kidney Biopsy Samples Over Time: A 16-Year… Increasing Incidence Of Inadequate Kidney Biopsy…

By Nissen CJ, Moreno V, Davis VG, Walker PD

December 2021

Recently, there has been a perceived change in the number of inadequate samples. The aim of this study was to determine…

Recently, there has been a perceived change in the number of inadequate samples. The aim of this study was to determine the native renal biopsy miss rate from 2005 to 2020 at Arkana Laboratories, a nationwide kidney biopsy service.

Increasing Incidence of Inadequate Kidney Biopsy Samples Over Time figure 1
Read on KI Reports

Arcane Apoptosis In Appendicitis: Clue To Covid-19 In Children Or Coincidence? Arcane Apoptosis In Appendicitis: Clue To Covid-19…

By Pai SA, Bhaduri B, Chandrasekar S, Alladi PA, Caza T, Mahadevan A, Saiprasad TR, Walker PD

November 2021

We had observed increased apoptosis in two appendixes in children who developed acute appendicitis after COVID-19…

We had observed increased apoptosis in two appendixes in children who developed acute appendicitis after COVID-19 infection. We wondered if this was a chance finding or was causal.

Read on BMJ

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Rachelle Gietzen, MD

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