Our Team | Chaplaincy Services and Education | UC Davis Health

Chaplain Avitus Andrea is currently serving in his residency unit (2025–2026), continuing his formation in clinical pastoral care. Born and raised in Tanzania, he moved to the United States in May 2025, where he began his chaplaincy journey through a CPE summer unit at PeaceHealth St. Joseph in Bellingham.

Chaplain Avitus holds a Bachelor of Arts with Education from University of Dar es Salaam - Tanzania(2022) and a Master of Arts in Public and Pastoral Leadership from Vancouver School of Theology - Canada (2026)

Louis William (Bill) Oliverio, Jr., Ph.D., M.A. serves as Spiritual Care Specialist 1. Originally from Cleveland, Ohio and then the Upper Midwest, he holds a PhD in Religious Studies – Theology and Philosophy from Marquette University in Milwaukee, Wisconsin and a M.A. in Christian Thought from Bethel Seminary in St. Paul, Minnesota.

Bill loves working at UC Davis Health and otherwise enjoys spending time with his wife and young adult children, playing soccer, and he will likely chat up anyone at the UC Davis Health he sees wearing anything representing the Green Bay Packers. He is a minister of the Missio Mosaic, a charismatic missional society of the Anglican Communion.

Rev. Daniel Orogun brings academic experience in Spirituality, Healthcare, and Health Systems, and a track record of research publications. He embarked on a spiritual career, aiming to apply his research expertise in clinical environments while continuously learning and enhancing his skills. Daniel earned a Bachelor of Divinity and a Master of Ethics and Philosophy from the University of Jos in Nigeria, an MBA from Regent Business School, and a PhD in Biblical and Religious Studies from the University of Pretoria in South Africa. He is currently serving as a Resident Chaplain at UC Davis Health. With over 30 years of ministry experience, Daniel is also a father to four children.

Sukkyu lee earned a Master of Divinity in 2016 from Berkeley School of Theology in Berkeley, California. He also earned a Bachelor of English Literature and Language in 2007 from Lifelong National Education Institution in Seoul, South Korea. He completed two units of Clinical Pastoral Education (CPE) at Stanford Health Care in 2023-2024 Internship Program in Palo Alto, California prior to this program.

He is committed to continuing to learn and grow in spiritual care while serving individuals and communities in need. He enjoys golf and swimming, and values time with his wife and their two daughters, who are now grown and independent in his new hometown Stockton, CA.

Rev. Andrei Yaholkovsky is currently studying as a Chaplain in the Extended CPE Program at UC Davis Health. He received his Master of Divinity degree from Western Seminary and was ordained by the Wesleyan Church. Andrei has served as a Pastor in the Sacramento area for the past 13 years. He is married with two daughters, enjoys time outdoors, and watching a good show with the family.

Tim Lim is in his first year as a chaplain participating in the Clinical Pastoral Education extended chaplaincy program at UC Davis Health. Tim grew up in San Francisco and graduated from UC Berkeley in 1994. He received his Master of Divinity at Westminster Theological Seminary in California in 1999 and was ordained a minister in the Presbyterian Church of America pastoring at various churches for several years. In 2002, Tim went to Korea to become a professor of Biblical Studies at Calvin University, South Korea. Tim and his family joined Mission to the World in 2012 and moved to Cambodia to be missionaries. They returned to the US in 2022, and Tim is now seeking to minister as a chaplain. Tim is married to Moonsook and has a daughter. Tim enjoys reading, studying the Bible, taking walks, and traveling to new places.

Reginald is in his first year as a chaplain with UC Davis Health Chaplain and Services Extended CPE Program. Born and raised in Sacramento, Ca, he obtained a B.S. in Finance from CSUS. He received a master’s in special education from Benard College at UOP. He has assisted the Sacramento community with financial success for over 35years as a financial professional. He served as a Special Education educator for over 20years. Reginald currently serves as a youth Sunday school superintendent, Convalescent ministry coordinator, mem’s ministry leader and ministry leader in children’s church. Currently he is seeking enrollment in Gateway Seminary.

Reginald is married to Esther Kennedy, together they are proud parents to 1 son and 1 grandchild. He enjoys reading, writing, teaching, bicycle riding, vacationing and investing time with family and friends.