Church Staff

We know it's important for you to know who is part of the Walnut Hills team.

Who We Are

The following staff help provide leadership and direction at Walnut Hills. We hope you’ll reach out with questions and ideas as you see fit!

Nate Nims



Extension: 105

Rev. Nate Nims was appointed to Walnut Hills on September 1, 2022. Nate and his spouse, Irene DeMaris, have a dog, Leo, and two cats, Selina and Felix. Nate has a bachelor’s degree from Simpson College in Religion and earned his Masters of Divinity at Drew Theological Seminary. Prior to Walnut Hills, Nate served at Des Moines Grace, Waterloo First UMC, and Fairfield First UMC. Irene, is a deaconess appointed to her position as the Executive Director of Iowa Interfaith Power and Light. In their free time, Nate and Irene both enjoy cooking, cycling, and getting involved in the community.

Maggie Ostrander

Maggie Ostrander

Music Director

Extension: 114

Maggie Ostrander started in her current position in Aug. 2013. She and her husband, Josh, have two children: a daughter, Madylan, and a son, Judah. Maggie has bachelor’s degrees in vocal performance and church music and a master’s degree in music with a vocal emphasis. Prior to joining Walnut Hills UMC, Maggie served as the Director of Music at First Congregational United Church of Christ in Waterloo, Iowa. In her spare time, Maggie enjoys reading, exercising, singing, and spending time with her family.