Staff at St. Stephen

Dr. Timothy Zimmerman Witmer – Pastor Emeritus

Dr. Timothy Zimmerman Witmer grew up in New Holland, Pennsylvania where he was raised in a Christian home. He attended West Chester University where he became a Christian through the ministry of Campus Crusade for Christ. After graduating with a Bachelor of Arts in Philosophy (1975) he attended Westminster Theological Seminary (Philadelphia) where he completed the Master of Divinity degree.

On November 11, 1979 he was ordained as a Teaching Elder in the Presbyterian Church in America (PCA) and was installed as Assistant Pastor of Berith (now Springton Lake) Presbyterian Church in Newtown Square, Pennsylvania. He was called as Pastor of Crossroads Community Church in Upper Darby, Pennsylvania and was installed on December 14, 1986.

While at Crossroads he began his doctoral studies at Reformed Theological Seminary (Orlando). He received his Doctor of Ministry degree in 1998.

In 1999 he was invited to join the faculty of Westminster Theological Seminary where he served as the Coordinator of the Practical Theology Department.

He “retired” from his ministry at Crossroads in January of 2014 and was named Pastor Emeritus. Shortly thereafter the Lord opened the door for him to serve as part-time pastor at St. Stephen Reformed Church. His ministry at the church officially began at St. Stephen on January 1, 2015. He retired from his work at Westminster Seminary, being named Emeritus Professor of Practical Theology, and came to St. Stephen fulltime on September 1, 2017.

He married Barbara, his high school sweetheart, on July 26, 1975. They have three children: Sara, who is married to Joel Schuster; Rebecca, who is married to Mike Smith; and Nathan. The Witmers have seven grandchildren: Mikayla, Abbie, Kathryn, Emma, Lily, Benjamin, and James.

He was motivated to write The Shepherd Leader as he became aware of increasing numbers of congregations who were like sheep without a shepherd. His objective is to see all church leaders embrace their calling to shepherd the flock. Please click on “” to learn more.

Dr. Witmer’s Publications

Mindscape: What to Think About Instead of Worrying. Crossway, 2014

The Shepherd Leader: Achieving Effective Shepherding in Your Church, Presbyterian and Reformed Publishing Company, 2010.

The Shepherd Leader at Home: Knowing, Leading, Protecting, and Providing for Your Family Family, Crossway/Good News Publishers, 2012.

Doug Wimer – Music Director and Organist

Doug is a graduate of Philadelphia College of Bible (now, Cairn University) with a Bachelor of Science in Bible and Bachelor of Music in Piano Performance and Vocal Performance, studying with Dr. David Shockey (voice), Dr. Sheila Threlfall (piano), Dr. Roy Brunner (organ) and the late Dr. Samuel Hsu (piano). Post-graduate studies followed at Westminster Choir College (Princeton, NJ) where he received the Master of Music degree in Organ Performance as a student of Mr. Robert Carwithen.

Previously, he has held positions as organist of Great Valley Presbyterian Church, Malvern, PA, Associate Organist of Tenth Presbyterian Church, Philadelphia, PA and adjunct faculty (organ, literature, hymnology, service playing, etc.) at Cairn University. Most recently he served at Evangelical United Methodist Church in New Holland. Doug is currently the president of Buch Organs in Ephrata, PA and Dean of the Lancaster Chapter of the American Guild of Organists. He lives in the Downingtown area with his wife, Joy.

Dr. Stuart Sacks

Dr. Sacks began his ministry as the assistant pastor to James Boice at historic Tenth Presbyterian Church in Philadelphia. He and Pastor Tim worked together at Berith Presbyterian Church (now Springton Lake PCA) in Newtown Square, PA. Before moving to New Holland, he served on the pastoral staff of Proclamation Presbyterian Church in Bryn Mawr, PA. We have also been blessed by his musical gifts as he leads worship at our 10:30 service. He and his wife Marion moved to Garden Spot Village in 2014 and has assisted with music, preaching, and teaching since then.

Nathan Titus – Pastoral Intern

Nathan has been at St. Stephen Reformed Church since 2016. He graduated from Lancaster Bible College in 2014 with a BA in Biblical Studies and a BA in Worship Arts. He’s currently is pursuing his M.Div through Knox Theological Seminary and ordination in the PCA. As the Pastoral Intern, he leads the Youth Group and assists in St. Stephen’s worship services. He also loves to help with the technology around the church.

He is the husband to Faith and a proud father. According to eye-witness reports from his 4-year-old daughter, Nathan can be found drinking lots of coffee, eating the ‘keto’, and reading books. Nathan can neither confirm nor deny these allegations.

Anita Witmer- Administrative Assistant

Anita has worked at various companies as an Administrative Assistant, a position she enjoyed due to the variety of duties and everyday being different. After searching for a job for 8 months, she feels the Lord lead her  here. She knew many of the members prior to coming on board which makes the job so much easier. She looks forward to getting to know more people as time goes by. In her spare time she spends time volunteering with fundraising activities at Garden Spot Fire Rescue and also enjoys reading and working in her flower gardens.

Charlene Good – Bookkeeper

Charlene is a bookkeeper by day, a tax preparer by night. For the last ten years she has been St. Stephen’s secretary.  Now she is working as the church bookkeeper.

Jill Wilson

Jill was looking for a job change when her uncle mentioned that there was an opening at St. Stephen. “The Lord brought me here, I love my job”.  

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