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 staff includes experienced and caring 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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Gael Wheeler, DO

Overland Park Campus

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Lucas Tims, ND, FABNO

Overland Park Campus

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Michael Shaw, PA-C, ABAAHP

Wichita 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

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Megan Neathery, MSM

Nutrient Store Manager

Paul Taylor

Director of Information Services

Front Office

Jean Van Ness

Director of Front Office Operations

Mona Wilson

Patient Care Team

Sabrina Sauls

Patient Care Team

Clinic Team

Chris Brannon, RN, BSN

Director of Clinical Services

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Annette Chlumsky, RN

Registered Nurse

Krystal Dinkel, RN

Registered Nurse

Olivia Nugroho, RN, BSN

Registered Nurse

Danae Baker, NCMA AAS

Certified Medical Assistant

Kristy Reid MA, AAS

Medical Assistant

Overland Park Office

Michelle Carpet-Chichura, MBA

Office Manager, Overland Park

Kim Medis, RN, BSN

Registered Nurse

Conner Keyeski, RN, BSN

Registered Nurse

Polly Breitenkamp RN, BSN

Registered Nurse

Randol Ramseier, RN, BSN

Delphine Dara

Patient Care Team

Hays Office

Betty Brungardt

Office Manager, Hays

Cindy Newell, RN

Registered Nurse (PRN)

Jennifer Tutak, RN

Registered Nurse

Debbie Augustine, LPN

Licensed Practical Nurse

Bio-Center Lab Team

Charles Hinshaw, MD

Laboratory Director

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Jerry Tiemeyer MT(ASCP)

ASCP • Laboratory Manager

Karen Moore MLT(CSMLS)

Laboratory Technologist

Doug Johnson MT(ASCP)


Amanda Vuong MLS (ASCP) CM

Laboratory Technologist

Melissa Ortiz MLS (ASCP) CM

Laboratory Technologist

Amanda Lee NCMA, AAS


Research Team

Nina Mikirova, PhD

Director of Research

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Administrative Staff

Jason Hattrup

New Patient Coordinator

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Rachel Brewster

Accounting Assistant

Alisha Gillespie

Medical Records

Pat Knafla

Medical Records

Maintenance and Facilities

Dang Nguyen

Maintenance Manager

Aaron Kramme


Scott Fryar



Carolyn Mitchell

Volunteer | May 1989

Jere Woodard

Volunteer | December 2003

Shawndra Hartman

Volunteer | February 2016

Jocelyn Pickard

Volunteer | March 2017

Jackie Abromeit

Volunteer | July 2017

Janice Cole

Volunteer | June 2018