Obituaries

Mark Loomis, retired officer, passes away

Mark Loomis, a retired correctional officer, passed away Aug. 4, 2024, at 58 years old. He worked for the department at California Men’s Colony in San Luis Obispo from 1996 until he retired in 2023.

Mark Loomis, retired correctional officer, passed away Aug. 4, 2024.
Mark Loomis

Loomis began his career with the department as a cadet in February 1996 at the Basic Correctional Officer Academy.

After graduating the academy, he reported for duty to California Men’s Colony in April. He remained at the institution his entire career, retiring in August 2023.

“Our thoughts and prayers are with the entire Loomis family during this time of morning,” according to a statement issued by the institution.

“Mark was an avid surfer, a talented golfer and an accomplished visual artist. He was a loyal fan of the San Francisco Giants and enjoyed attending baseball games. He greatly enjoyed the natural beauty of California, especially the central coast beaches and Yosemite. Above all, he cherished time spent with his family and his many close friends,” according to a statement by the family.

He was engaged to be married and is survived by his son, mother, and five siblings.

A memorial celebration for family and friends will be held on Oct. 12 at 11 a.m., at the Loomis Family Barn, 8451 Huasna Road, Arroyo Grande.


Read more tributes to staff and retirees who have passed away.

Follow CDCR on YouTubeFacebookX (formerly Twitter). Listen to the CDCR Unlocked podcast.

Related content

San Quentin mourns passing of Officer Michelle Jones‑Harris

Michelle Jones-Harris, a correctional officer at San Quentin Rehabilitation Center, passed away July 21, 2026. Jones-Harris began her career at…

Remembering CDCR Parole Agent Joshua Byrd, one year later.

Watch: Agent Byrd memorialized at training center, CMF

Two CDCR memorial ceremonies honored fallen Parole Agent Joshua Byrd, marking one year since his passing. At California Medical Facility…

Ismael Martinez, retired correctional lieutenant

Ismael Martinez, a retired correctional lieutenant from Central California Women’s Facility in Chowchilla, passed away July 14, 2026. He worked…

CMF mourns loss of Melissa Boos, management services tech

Melissa Boos, a management service technician at California Medical Facility (CMF) in Vacaville, passed away July 21, 2026. She worked…

CSP‑Solano mourns loss of Kevin Thomas, health records tech

Kevin Thomas, a health records technician at California State Prison-Solano, passed away June 22, 2026. Thomas began his career as…

San Quentin mourns passing of Jonathan Castillo, office tech

Jonathan Castillo, an office technician at San Quentin Rehabilitation Center, passed away Feb. 1, 2026. Castillo began his career at…