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

Refer a Patient

When you refer a patient to one of our network practices, you ensure that they will receive high-quality, personalized care.

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.

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