Father Holtzinger was born in Medford in 1966. He graduated from Tigard High School in 1985 and earned a bachelor’s degree in Math Education from Oregon State University in 1989 and a master’s degree in the same subject from Oregon State in 1993. 

He taught math, computer science and religion at Central Catholic High School in Portland from 1990 to 1992 and taught math at Tigard High School from 1992 to 1993. 

He entered Mount Angel Seminary in 1993. He also earned a master’s in theology and divinity in May 2000. As a seminarian, he served at the Benedictine Nursing Center in Mount Angel, St. Mary Star of the Sea Parish in Astoria, St. Patrick Parish in Independence and did a year of pastoral work at All Saints Parish in Portland. Ordained a deacon on June 25, 1999 at St, Mary in Corvallis by Auxiliary Bishop Kenneth Steiner, then served as a deacon at Queen of Peace Parish in Salem for a year. He was ordained a priest by Archbishop John Vlazny at the Cathedral of St. Mary of the Immaculate Conception in Portland, Oregon on July 1, 2000.

His first priestly assignment was as the Parochial Vicar at St. Joseph Parish in Roseburg (inlcuding St. Francis Xavier in Sutherlin, OR) from July 1, 2000 until October 31, 2001. He then was transfered and made the pastor at St. Anthony Parish in Forest Grove on November 1, 2001. On July 1, 2009, he was assigned to St. Anne Parish in Grants Pass which included two missions, St. Patrick of the Forest in Cave Junction and Our Lady of the River in Rogue River. His most recent assignment is as pastor at Holy Trinity Parish in Beaverton, Oregon which began on July 1, 2022.

Since ordination, he has been actively involved in new media as a avenue to spread the Good News of Jesus Christ.  "Fr. Bill's Podcast" is his flagship podcast that began in September of 2005.  Formerly known as "St. Anthony's Podcast." Since then he has branched out to create "The Mysteries of the Mass Podcast," "The PilgrimCast," and "Fr. Geek's Video Podcast" and several others. 

His favorite hobby is that of astronomy and is a member of the Vatican Observatory Foundation.  He also enjoys camping and kayaking. He also enjoys dabbling in web design and can be easily followed on Facebook, twitter, Instagram, and other social media avenues.