C. Aaron Nichols

C. Aaron Nichols, MHSA, FACMPE Chief Administrative Officer

About

C. Aaron Nichols joined Arkana in 2011 as Practice Coordinator after completing his graduate program in health services administration at the University of Arkansas for Medical Sciences College of Public Health. Since joining, his position has evolved, eventually becoming the Chief Operating Officer in 2019, then the Chief Administrative Officer in 2026. Today he oversees Arkana’s Credentialing, I.T., Materials, Quality Assurance, and Transcription Departments. In addition, he leads Arkana’s Compliance Committee and monthly leadership development meetings. Aaron is a Fellow in the American College of Medical Practice Executives and serves on the Executive Committee for the Arkansas Medical Group Management Association.

Doctor Directory

Josephine Ambruzs, MD, MPH

Nephropathologist

Kerime Ararat, MD

Nephropathologist

Alejandro Best, MD

Nephropathologist, Assistant Physician Chief

Vanesa Bijol, MD

Nephropathologist

Christie Boils, MD

Nephropathologist

Stephen Bonsib, MD, MS

Emeritus Nephropathologist

T. David Bourne, MD

Neuropathologist, Nephropathologist

Frank Boyd, MD

Nephropathologist

Clarissa Cassol, MD

Nephropathologist

Tiffany Caza, MD, PhD

Nephropathologist, Scientist

River Charles, MD

Nephropathologist

Shana Coley, MD, PhD

Nephropathologist

L. Nicholas Cossey, MD

Chief Operating Officer, Nephropathologist

Avery England, PhD

Scientist

Rachelle Gietzen, MD

Nephropathologist

Eric Goold, MD

Neuropathologist, Molecular Pathologist

Ritu Gupta, MD

Nephropathologist

Samar Hassen, PhD

Research Scientist

Randy Haun, PhD

Senior Scientist

Danni Holanda, MD

Nephropathologist

Jolanta Kowalewska, MD, PhD

Nephropathologist

Chris Larsen, MD

Chief Executive Officer, Nephropathologist

Alan Lim, MD

Nephropathologist

Rebecca May, MD, PhD

Nephropathologist

Paul Miller, MD

Nephropathologist, Fellowship Program Director

Odia Molen, MD

Nephropathologist

Joel Murphy, MD

Nephropathologist, Visiting Scholars Program Director

Mohammad Obeidat, MD

Nephropathologist

Jason Paris, PhD

Chief Scientific Officer

Miran Rhee-Anagnost, MD

Nephropathologist

Shree Sharma, MD

Laboratory Director, Nephropathologist

Fred Silva, MD

Emeritus 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

Jason Paris, PhD

Chief Scientific Officer

Josephine Ambruzs, MD, MPH

Nephropathologist

Kerime Ararat, MD

Nephropathologist

Alejandro Best, MD

Nephropathologist, Assistant Physician Chief

Vanesa Bijol, MD

Nephropathologist

Christie Boils, MD

Nephropathologist

Stephen Bonsib, MD, MS

Emeritus Nephropathologist

T. David Bourne, MD

Neuropathologist, Nephropathologist

Frank Boyd, MD

Nephropathologist

Clarissa Cassol, MD

Nephropathologist

Tiffany Caza, MD, PhD

Nephropathologist, Scientist

River Charles, MD

Nephropathologist

Shana Coley, MD, PhD

Nephropathologist

L. Nicholas Cossey, MD

Chief Operating Officer, Nephropathologist

Rachelle Gietzen, MD

Nephropathologist

Ritu Gupta, MD

Nephropathologist

Danni Holanda, MD

Nephropathologist

Jolanta Kowalewska, MD, PhD

Nephropathologist

Chris Larsen, MD

Chief Executive Officer, Nephropathologist

Alan Lim, MD

Nephropathologist

Rebecca May, MD, PhD

Nephropathologist

Paul Miller, MD

Nephropathologist, Fellowship Program Director

Odia Molen, MD

Nephropathologist

Joel Murphy, MD

Nephropathologist, Visiting Scholars Program Director

Mohammad Obeidat, MD

Nephropathologist

Miran Rhee-Anagnost, MD

Nephropathologist

Shree Sharma, MD

Laboratory Director, Nephropathologist

Fred Silva, MD

Emeritus Nephropathologist

Jaime Singh, MD

Nephropathologist

Cherry Starling, MD

Nephropathologist

Patrick D. Walker, MD

Founder, Nephropathologist

T. David Bourne, MD

Neuropathologist, Nephropathologist

Eric Goold, MD

Neuropathologist, Molecular Pathologist

Joshua Sonnen, MD

Neuropathologist

Jon Wilson, MD

Neuropathologist, Molecular Pathologist

Josephine Ambruzs, MD, MPH

Nephropathologist

Clarissa Cassol, MD

Nephropathologist

Tiffany Caza, MD, PhD

Nephropathologist, Scientist

Shana Coley, MD, PhD

Nephropathologist

Avery England, PhD

Scientist

Samar Hassen, PhD

Research Scientist

Randy Haun, PhD

Senior Scientist

Rebecca May, MD, PhD

Nephropathologist

Jason Paris, PhD

Chief Scientific Officer

Joshua Sonnen, MD

Neuropathologist

Aaron Storey, PhD

Director of Mass Spectrometry Laboratory

Meet All Doctors and Team