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Timothy Hewson
General Counsel
Tim has practiced health law for over 30 years with an emphasis on business law, corporate governance, regulation, and payment.
Physician Leadership Team
Jennifer K. Murphy, M.D.
Physician Director / Medical Officer
Gregory W. Niemer M.D.
Physician Director / Medical Officer
Colin C. Edgerton, M.D.
Chairman, ARN
Physician Director / Medical Officer
Gary E. Fink M.D.
Physician Director
Clarence W. Legerton III M.D.
Physician Director
Meet The Team
Michael Cooper
CEO
AHG & ARN
Timothy Hewson, JD
General Counsel
Deb Mauk
Chief Operating Officer
Katrina DeLuca, MBA, CPA, CFE, CIA
Director of Accounting & Tax
Nick Stoltmann, MBA, CPA
Director of Finance, Revenue Strategy, & Payor Contracting
Sarah McClain, MBA
Director, Strategy & Innovation
Karen McKerihan, MSN, NP-C
Director of Infusion and Clinical Services
Stephanie Murden
Infusion Intake Manager
Morgan Grubbs, ICPP
Marketing and Business Development Manager
Patty Howenstine, MSN, FNP-BC
Clinical Research Manager and Investigator
Brody Williamson, MSHA, MBA
Operational Strategy Administrator
Caitlyn Bednarek, M.Ed, CHES®
Account Manager
Cassandra Olear
Account Manager
Angela Fruth
Human Resources & Credentialing Specialist
Kayla Benford, BSN, RN
Infusion Nurse Trainer
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Join Our Network
Learn more about our commitment to empowering better rheumatology care through an integrated and supportive network that helps local practices maintain their independence and flourish.
