Meet our leadership

Sheriff Patrick Withrow
Sheriff Withrow was elected Sheriff on June 5th, 2018, and was sworn into office on January 7th, 2019. This is Sheriff Withrow’s first term as Sheriff, but it is his 29th year with the San Joaquin County Sheriff’s Office. During his tenure, he has worked in almost every division of the department, including five years with S.W.A.T. and 12 years with the Canine Unit and Lathrop Police Services. He has also been nominated five times for the Italian Athletic Club’s Officer of the Year Award, as well as being nominated for the California State Life Saving Award.
Sheriff Withrow graduated from Central Catholic High School in Modesto, California, and attended Modesto Junior College and Stanislaus State University. He graduated from Union Institute and University with a Bachelor of Science in Criminal Justice Management and graduated from the West Point Leadership Academy.
Sheriff Withrow enjoys riding his motorcycle with his wife, Kathy Withrow, and camping across America with his wife and three kids.

Command staff

Matt Lenzi
Undersheriff

Shelby Oliver
Assistant Sheriff

Gregory Williamson
Correctional Assistant Sheriff

Naseem Rehman
Administrative Services Director

Chanda Bassett
Captain

Brian Barnes
Captain

Ryan Biedermann
Captain

Art Harty
Captain

Dustin Kulling
Captain

Joe Petrino
Captain

Mike Alagna
Lieutenant

Jose Aleman
Lieutenant

James Boles
Lieutenant

Toby Farnsworth
Lieutenant

Randall Johnson
Lieutenant

Daryl LaBarthe
Lieutenant

Matt Lindemann
Lieutenant

Rudy Lovato
Lieutenant

Jared Pettitt
Lieutenant

Anthony Reynoso
Lieutenant

Ezra Salomon
Lieutenant

Nick Taiariol
Lieutenant

Samuel Cortez
Correctional Captain

Kimberly De La Cruz
Correctional Captain

Anthony Knapp
Correctional Lieutenant

Steve Kowalczyk
Correctional Lieutenant

Steve Martinez
Correctional Lieutenant

Marco Mendoza
Correctional Lieutenant

Jamiyl Surgick
Correctional Lieutenant

Trenton Tavai
Correctional Lieutenant

Michael Tibon
Correctional Lieutenant

Jerry Williamson
Correctional Lieutenant

Stephen Taylor
Sheriff's Legal Advisor