Lifeserve Executive Team

Executive Team

Stacy Sime

Stacy Sime President and CEO

Stacy is currently the President and Chief Executive Officer of LifeServe Blood Center. In addition to her undergraduate degrees in Biochemistry and Microbiology from North Dakota State University, Stacy has a Masters Degree from Drake University. Stacy’s career in transfusion medicine started at Mercy Medical Center in Des Moines, Iowa where she worked in an active transfusion service for six years. Her blood center career began at The Blood Center of Iowa. During her time in the organization, Stacy worked her way through Quality, Donor Services, Recruitment, and Hospital Services, including the testing laboratory. 

Stacy is committed to developing tomorrow’s leaders. She has served as the Educational Coordinator for the Mercy School of Clinical Laboratory Science and now is an active member of the Advisory Board for the school. She actively mentors young leaders in her community. She is a member of the LEAD Advisory Board for Drake University, which is committed to creating an under graduate leadership curriculum.  Stacy believes the success of any community is connected to the vitality of its workforce. Stacy currently sits on the Regional Workforce Board.  

Stacy is active in her industry. She is currently on the Board of Blood Centers of America and the National Blood Collaborative. She has been active in AABB and Blood Group Alliance. She served as the chair of Blood Centers of America for 4 years. She currently sits on the National Hospital Contracts Committee and the Executive Committee. Stacy was honored to participate in an Administrative Think Tank for the American Association of Blood Banks (AABB), a national organization dedicated to furthering transfusion medicine. Through her work on the Think Tank, Stacy actually published work on changes that needed to be made to strengthen the relationship between blood centers and hospitals. 


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Brian Aust Chief Financial Officer

As Chief Financial Officer of LifeServe Blood Center, Brian brings a proven track record of strategic financial leadership, ensuring the organization's long-term financial strength and forward-thinking growth. With extensive experience spanning public accounting, manufacturing, construction, and entrepreneurship, Brian provides a versatile perspective that drives innovative solutions and operational excellence.

In his role, Brian oversees all finance and accounting functions, while also managing the critical operations of Information Technology, Purchasing, Fleet, and Facility departments, contributing to LifeServe's mission with a comprehensive leadership approach.


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Megan Reuther Vice Chairperson

Anchor/Reporter for WHO 13/Hello Iowa

Megan joined the WHO 13 News Team in October 2007, as a live reporter for Today in Iowa. She anchored for five years. Her work on a month-long series about childhood cancer awareness won an Upper Midwest Regional Emmy for Health Series in 2020! She is recognized for her engaging storytelling abilities and commitment to providing the Des Moines community with engaging stories and news broadcasts.


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Tom Matthews Secretary/Treasurer

Chief Financial Officer at UnityPoint Health - Des Moines

He was the VP of Finance for Mercy Health in Missouri, where he maintained the southwest Missouri/Kansas region. Tom holds a Master of Health Service Administration and a Bachelor of Science (Biology) from Xavier University, and a B.S. in Accounting from Colorado State University.


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Janet Wilwerding Board Member

Communications Director, City of Johnston

Janet has participated in many speaking engagements, including with the Iowa Parks and Recreation Association and the Iowa Municipal Finance Officers Association. On our Board of Directors, Janet is also the Director of Communications for the City of Johnston Government. She has a strong communications background, having worked with Iowa Corn and the City of Pleasant Hill, Iowa.


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Michael Nelson Board Member

Assistant Dean of Students Affairs, Drake University College of Pharmacy & Health Sciences

Michael is Professor of Pharmaceutical Sciences, and Assistant Dean of Student Affairs and Enrollment Management at Drake University. He is on the LifeServe Board of Directors, and is a vital part of our Finance Committee.


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Carrie Theisen Davis Board Member

Senior Vice President, Human Resources Senior Manager, Wells Fargo

Carrie graduated from University of Illinois Urbana-Champaign, and is currently at Wells Fargo. On our Board of Directors, she is also on the Human Resources Committee.


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Matthew Triplett Board Member

Sr. Project Manager, ESO

After graduating from the University of Iowa, he is now helping to improve public health safety in local communities! He is part of our Finance Committee, and on the LifeServe Board of Directors.