Our staff

The staff at NewHeart Foursquare serves the church as a direct calling from the Lord. 

Our first commitment is to God, whom we have personal relationship with and brings unity in the Spirit. 

Our second commitment is to our family, whom the Lord has given to us as our first ministry.

Our third commitment is the church, whom we believe will follow as we model

our love for Jesus and people. 

  • Lead Pastor  |  Michelle McMahon

    Michelle is a child of the Pacific Northwest and loves the outdoors, water and all things green.  She graduated from Seattle Pacific University with a BA in Educational Ministries and continues to be a passionate learner of Jesus and his Kingdom. She spent many years in youth and worship ministry investing in and empowering young people to learn to hear and follow the voice of God. In 2014 she became Lead Pastor at NewHeart where she guides the Altadena community in pursuit of the Kingdom of God and its transformational power in their lives, families, workplaces and homes. Michelle is happily married to her husband and partner in ministry, Brian. Together they have a heart for restoring families.


  • Associate Pastor  |  Brian McMahon

    Brian grew up as part of a missionary family that planted churches, started a business, and continues to make disciples in southeast Asia. He graduated from Seattle Pacific University with a BA in Holistic Education and is currently working on his MS in Marriage and Family Therapy at Fuller Theological Seminary. Over the years he has ministered to youth, children, young adults, men, addicts, and rejects. He has a heart to see men set free to live in the fullness of their identity and calling in Jesus. Brian is gratefully married to his dream partner, Michelle and gets excited about running, hiking, soccer, or just sitting on his swing.  Brian functions as the 'fill-the-gap' pastor for NewHeart with his width of experience and willingness to serve.  

  • Apprentice Pastor |  Alex Russ

    Alex is a senior at Azusa Pacific University studying Biblical Studies and has a calling to be a pastor and a counselor.  He is learning and developing his skills as he cares for the NewHeart and APU community. He is humbly submitted  to Jesus and has a passion for prayer and the move of God in his communities!

  • Worship Team Administrator  | Jessica Santamaria

    Jessica received her calling to lead worship when she was 16 years old. She has been a part of NewHeart's worship team since 2008 and this past year has become the Team Lead. Her vision for the church is that the church can experience God's presence through its sincere worship. Chains can be broken and battles can be won by declaring the holy word of Christ through song. She is married to her husband Ray since 2006 and has two lovely daughters, Emily (4) and Chanel (2), who love to sing as she practices keyboard and guitar. 

  • Youth Apprentice Pastor | Julia Clemen

    Julia is a student at Life Pacific College. She has been a volunteer in our youth program and heard God calling her to take a next step in caring for and leading our youth in knowing God and relationship with each other. Julia has special gifts, knows how to make the complicated simple, and loves having fun with anyone she is with.