Patrick D. Walker, MD
Founder
Our most important milestones were the people that came. My hope is that everybody who comes to work here has a heart of concern for others.
Josephine Ambruzs, MD, MPH
Nephropathologist
Alejandro Best, MD
Nephropathologist, Fellowship Director
Vanesa Bijol, MD
Nephropathologist
Christie Boils, MD
Nephropathologist
T. David Bourne, MD
Neuropathologist, Nephropathologist
Clarissa Cassol, MD
Nephropathologist
Tiffany Caza, MD, PhD
Nephropathologist, Scientist
River Charles, MD
Nephropathologist
Shana Coley, MD, PhD
Nephropathologist
L. Nicholas Cossey, MD
Physician Director, Nephropathologist
Rachelle Gietzen, MD
Nephropathologist
Samar Hassen, PhD
Research Scientist
Randy Haun, PhD
Senior Scientist
Danni Holanda, MD
Nephropathologist
Daniel Kenan, MD, PhD
Nephropathologist, Director of Innovation
Chris Larsen, MD
Executive Director, Nephropathologist
Rebecca May, MD, PhD
Nephropathologist
Paul Miller, MD
Nephropathologist, Associate Fellowship Program Director
Odia Molen, MD
Nephropathologist
Joel Murphy, MD
Nephropathologist, Visiting Scholars Program Director
Mohammad Obeidat, MD
Nephropathologist
Jason Paris, PhD
Director of Contract Research
Miran Rhee-Anagnost, MD
Nephropathologist
Shree Sharma, MD
Laboratory Director, Nephropathologist
Jaime Singh, MD
Nephropathologist
Joshua Sonnen, MD
Neuropathologist
Cherry Starling, MD
Nephropathologist
Aaron Storey, PhD
Director of Mass Spectrometry Laboratory
Patrick D. Walker, MD
Founder, Nephropathologist
Jon Wilson, MD
Neuropathologist, Molecular Pathologist
Stephen Bonsib, MD, MS
Emeritus Nephropathologist
Fred Silva, MD
Emeritus Nephropathologist
Chris Larsen, MD
Executive Director, Nephropathologist
L. Nicholas Cossey, MD
Physician Director, Nephropathologist
Shree Sharma, MD
Laboratory Director, Nephropathologist
C. Aaron Nichols, MHSA, FACMPE
Chief Operating Officer
Denise Stone
Chief Marketing Officer
Julie Wood, SPHR, SHRM-SCP
Chief People Officer
From pathologists and scientists to administrative positions, Arkana has a variety of career opportunities available.
Our goal is to empower you with flexibility between career tracks, because we know people grow, and we want to grow with you. Wherever you want to go, we want to help you set the course.