physicians laughing in case conference at Arkana Laboratories
lab technician cutting a renal biopsy at IF station
renal pathologist grabbing slides from case folder
renal pathologist looking through case chart
arkana laboratories board members meeting in conference room
physicians at arkana laboratories sitting in common room talking
lab team member looking at papers while sitting at desk
lab technician processing biopsy
Patrick Walker, founder of arkana laboratories

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.

The Arkana Team


Our Doctors

Josephine Ambruzs, MD, MPH renal pathologist at arkana laboratories

Josephine Ambruzs, MD, MPH

Nephropathologist

Jane Bell, MD renal pathologist at arkana laboratories

Jane Bell, MD

Nephropathologist

Alejandro Best, MD renal pathologist at arkana laboratories

Alejandro Best, MD

Nephropathologist

Christie Boils, MD renal pathologist at arkana laboratories

Christie Boils, MD

Nephropathologist

T. David Bourne, MD renal pathologist and neuropathologist at arkana laboratories

T. David Bourne, MD

Neuropathologist, Nephropathologist

Clarissa Cassol, MD renal pathologist at arkana laboratories

Clarissa Cassol, MD

Nephropathologist

Tiffany Caza, MD, PhD renal pathologist at arkana laboratories

Tiffany Caza, MD, PhD

Nephropathologist, Scientist

Shana Coley, MD, PhD renal pathologist at arkana labs

Shana Coley, MD, PhD

Nephropathologist, Director - Transplant Translational Research, Director - Multiplex Imaging Center

L. Nicholas Cossey, MD renal pathologist at arkana laboratories

L. Nicholas Cossey, MD

Physician Director, Nephropathologist

Zeljko Dvanajscak, MD, MS renal pathologist at arkana laboratories

Zeljko Dvanajscak, MD, MS

Nephropathologist

Samar Hassen, PhD researcher at arkana laboratories

Samar Hassen, PhD

Research Scientist

Randy Haun, PhD researcher at arkana laboratories

Randy Haun, PhD

Senior Scientist

Danni Holanda, MD renal pathologist at arkana laboratories

Danni Holanda, MD

Nephropathologist

Dr. Daniel Kenan renal pathologist at Arkana laboratories

Daniel Kenan, MD, PhD

Research Scientist

Michael Kuperman, MD renal pathologist at arkana laboratories

Michael Kuperman, MD

Nephropathologist

Chris Larsen, MD renal pathologist at arkana laboratories

Chris Larsen, MD

Executive Director, Nephropathologist

Rebecca May, MD, PhD renal pathologist at arkana laboratories

Rebecca May, MD, PhD

Nephropathologist

Joel Murphy, MD renal pathologist at arkana laboratories

Joel Murphy, MD

Nephropathologist

Shree G. Sharma, MD renal pathologist at arkana laboratories

Shree Sharma, MD

Laboratory Director, Nephropathologist

Patrick D. Walker, MD renal pathologist at arkana laboratories

Patrick D. Walker, MD

Founder, Nephropathologist

Jon Wilson, MD neuropathologist at arkana laboratories

Jon Wilson, MD

Neuropathologist, Molecular Pathologist

Stephen Bonsib, MD, MS renal pathologist at arkana laboratories

Stephen Bonsib, MD, MS

Emeritus Nephropathologist

Fred Silva, MD renal pathologist at arkana laboratories

Fred Silva, MD

Emeritus Nephropathologist


Arkana Leadership

Chris Larsen, MD renal pathologist at arkana laboratories

Chris Larsen, MD

Executive Director, Nephropathologist

L. Nicholas Cossey, MD renal pathologist at arkana laboratories

L. Nicholas Cossey, MD

Physician Director, Nephropathologist

Shree G. Sharma, MD renal pathologist at arkana laboratories

Shree Sharma, MD

Laboratory Director, Nephropathologist

COO of arkana laboratories, aaron nicholes

C. Aaron Nichols, MHSA, FACMPE

Chief Operating Officer

CMO of arkana laboratories, Denise Norwood

Denise Norwood

Chief Marketing Officer

CFO of arkana laboratories, Neal Daugherty

Neal Daugherty, CPA, MBA

Chief Financial Officer

arkana laboratories physician looking at biopsy under microscope at arkana laboratories

We're Hiring!

From pathologists and scientists to administrative and client service 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.