Doctors & Staff

Our Holistic Health Care Staff Empowers Patients with Self-Care Tools & Knowledge

With impressive credentials and decades of experience, the physicians at the Riordan Clinic provide the very best in care and expertise. Our outstanding holistic health care staff includes advanced registered nurse practitioners, registered nurses, and many other fine professionals who will make your time at the Riordan Clinic among the best medical experiences of your life.

Medical Providers

Ron Hunninghake, MD

Chief Medical Officer

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Nia Stephanopoulos-Chichura, MD

Kansas City Campus

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Jennifer Mead, ND

Naturopathic Medicine

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Anne Zauderer, DC

Chiropractic Medicine

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Jeff Evilsizor M.C., PA-C

Hays Campus

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Organizational Managers

Donna Kramme

Chief Executive Officer

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Mike Stewart

Director of Business Development

Carol Marsh

Director of Finance

Erin Manning, MBA

Director of Marketing

Paul Taylor

Systems and Network Manager

Front Office

Jean Van Ness

Office Manager

Mona Wilson

Patient Care Team

Jason Hattrup

New Patient Coordinator

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Megan Neathery

Nutrient Store Specialist

Clinic Team

Chris Brannon, RN, BSN

Clinic Manager

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Annette Chlumsky, RN

Registered Nurse

Krystal Dinkel, RN

Registered Nurse

Olivia Nugroho, RN, BSN

Registered Nurse

TaNeisha R. Franklin, AAS

Medical Assistant

Danae Baker, CMA

Certified Medical Assistant

Pam Olberding, MA

Medical Assistant

Charleen Jenkins, CMA

Medical Assistant

Bio-Center Lab Team

Charles Hinshaw, MD

Laboratory Director

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Jerry Tiemeyer MT(ASCP)

ASCP • Laboratory Manager

Sharon MT(AMT)

Medical Technologist

Karen Moore MLT(CSMLS)

Laboratory Technologist

Nhu Tang MT(ASCP)

Laboratory Technologist

Angie Cool, NCMA, NCPT


Amanda Lee NCMA, AAS


Kansas City Office

Kim Medis, RN, BSN

Hays Office

Betty Brungardt

Officer Manager, Hays

Cindy Newell, RN

Registered Nurse

Debbie Augustine, LPN

Licensed Practical Nurse

Research Team

Nina Mikirova, PhD

Director of Research

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Ruth Scimeca PhD

Research Consultant

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Administrative Staff

Kyle Smith

Accounting Assistant

Vicki Fiebach, RN

New Patient Advocate

Sarah Neathery

Patient Data Coordinator

Maintenance and Facilities

Dang Nguyen

Maintenance Manager

Aaron Kramme


Glen Gamble