Patrol Bureau


The Patrol Bureau is the most visible branch of the Police Department. This bureau has the greatest interaction with the community and it is our goal to respond to the community’s needs in a professional and empathetic manner. 

The Patrol Bureau is committed to working in a collaborative effort with the community to identify and address quality of life issues with our focus directed toward long term solutions.

Patrol Supervisors

Schedule Hours / Shift Supervisor Contact Information
Weekdays (Mon - Thu) Days (6am - 6pm) Sergeant Janayla Pierson Email / Phone: (925) 288-4621
Weekdays (Mon - Thu) Nights (6pm - 6am) Sergeant Brian Leonard Email / Phone: (925) 288-4618
Weekends (Fri - Sun) Days (6am - 6pm) Sergeant David Downs
Email / Phone: (925) 288-4619
Weekends (Fri - Sun) Nights (6pm - 6am) Sergeant Kevin Tillman Email / Phone: (925) 288-4685

Personnel Assignment Contact
Lieutenant David Nichols Division Commander Email
Sergeant Brian Leonard  Investigations Supervisor 
Terrorism Liaison, Massage Establishment permit delegation, Felony DUI, Coroner Follow-up
Detective James Woehrman Auto Theft, Auto Burglary, Retail Theft, Crime Intel Reports
Detective Chelsea Wright Robbery, Felony Assault, Arson, Terrorist Threats, Domestic Violence, Cold Cases. Email
Detective Danny Johnson Sexual Assaults, Child/ Elder Abuse, Missing Persons, PC 290 & 11590 Registrations Email
Detective David Garcia Residential and Business Burglaries, Identity Theft, Financial Crimes  Email
Community Resource Officer Justin Espinoza