Our Team

Our Directors

Ed Postma – President

Ed Postma, a former chair of the Exalta Health Board of Directors is presently the president of Exalta Health.  His past employment history has included almost 4 decades at Amway Corporation where he was involved in International business development, contract compliance and risk management.  After leaving Amway, he developed Cross Creek Consulting to provide assistance to direct selling companies He also was employed at Baxter Community Center as Assistant Director and Administrator.

Postma has been involved in Board work with a number of nonprofits over time to include Guiding Light, Steepletown, Gilda’s, Tall Turf ministries and others.  He has been impressed with the operation of Exalta Health, and the dedication of the staff, volunteers and supporters.  He along with the staff is looking ahead to greater contributions.  “We want to work and go as God directs.”

Sandra Muthyala – Advancement Director

Sandra Muthyala joined Exalta Health as Advancement Director in April 2020 after working at Ada Bible Church as the women’s ministry director at the Kentwood campus. She directs fund development, marketing and communications, critical work as Exalta Health relies heavily on donations to provide its services. She has also worked as a financial counselor for Mercy Health Saint Mary’s and spent two decades as a missionary in Uruguay, where she is from originally, and India, her husband’s home country. She is bi-lingual in English and Spanish. She is a graduate of Grace Bible College, where she met her husband, and after graduation embarked on what she describes as “a lifetime of work following God’s calling.”

Laura VanderMolen, DO – Medical Director

Dr. Laura VanderMolen has been with Exalta Health since September 2001 after returning from medical mission work in Peru. Laura serves as the primary doctor for many of our patients and recruits and provides oversight for the volunteer physicians and nurses at the clinic.

Laura was raised in Baltimore Maryland and attended Hope College in Holland, Michigan. After receiving her medical degree from Kirkville College of Osteopathic Medicine she completed her residency in Grand Rapids. She is board certified in Internal Medicine.

Daniel Armstrong

Daniel Armstrong, DDS – Dental Director

Daniel began volunteering at Exalta Health in June 2013 and became a staff dentist later that year. In 2015 he was appointed Dental Director. Daniel previously worked for Mel Trotter Ministries, Cherry Health, and Grace Health in Battle Creek, Michigan

Daniel attended Cornerstone University, Grand Rapids Community College, Grand Valley State University, and the University of Michigan, receiving a Doctor of Dental Surgery degree in 2009. He completed an additional twelve-month training program at the University of Michigan Health System focusing on care for the mentally handicapped, those with complex medical conditions, and hospital inpatients.


Jeena Adhikari – Dental Assistant
Andrea Cervantes – Medical Clinical Coordinator
Angelica Agustin-Cristobal – Medical Assistant
Sandra Deters, RDH – Dental Hygienist
Alma Duran-Martinez – Dental Assistant/Administrative Support
Monserrat Dykema – Receptionist
Gam Garcia – Dental Assistant
Karleigh Hoekstra – Volunteer & Contract Coordinator
Thressa Hoekstra – Executive Assistant and Office Manager
Fred Hoekzema, DDS – Dentist
Allison Meyaard-Schaap – Social Worker
Kristen Meyer – Chaplain
Alexandra Pelayo – Billing/Coding Specialist
Deb Schorr – Dental Hygienist
Lynette Schreur, R.N. – Project & Quality Manager
Chris Shoemaker, MD – Staff Physician
Hannah Stegink – Social Worker
Cristina Timmers – Dental Assistant
Jaimie VanDeBurg – Medical Assistant

Board of Directors

Doyle Hayes – Chairperson
Vicente Rojas – Vice Chairperson
Diane Knapp – Secretary
Tom Hillegonds – Treasurer
Amy Gerard – Member at Large

Eva Alexander
Doris Drain
Scott Halquist
Kyle Hollemans
Hector Lugo
Jose Nietes
Martha Norden Harvey
Zayda Rodriguez

We rely on the kindness of our donors and volunteers.

If you have a heart to help, please consider supporting Exalta Health.