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Sheriff's Office - Administration

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Sheriff Directory

John Robertson

Sheriff John R. Robertson

Sheriff John Robertson started his law enforcement career with the San Mateo, (California) Police Department in 1981. He moved to the Napa Sheriff's Office in 1991, where he worked his way through the ranks and was appointed Sheriff by the Napa County Board of Supervisors, on April 6th, 2012. John holds a Bachelor’s Degree in Criminal Justice from San Diego State University and is a graduate of the Sherman Block Supervisory Leadership Academy, Leadership Napa Valley and the Senior Management Institute for Police. (SMIP - Boston, Mass.)  He is a member of the California State Sheriff's Association, California Peace Officers Association, Police Executive Research Forum and Leadership Napa Valley. 

Sheriff Robertson is the Sheriff-Coroner and premier law enforcement official in Napa County.  He has the ultimate responsibility for overseeing the Coroner's Office, Field Operations, and Service Division's of the Sheriff's Office.  The current Sheriff's Office staff consists of one hundred four, allocated, sworn deputy positions and thirty six support staff positions.

Jean Donaldson

Undersheriff Jean Donaldson

Undersheriff Jean Donaldson began working for the Napa Sheriff’s Office in 1988. He has been assigned to Patrol, Investigations, Civil/Coroner and the Napa Special Investigations Bureau. Jean holds a Bachelor’s Degree in Criminal Justice Administration from California State University at Sacramento and is a graduate of the FBI National Academy. He coaches youth sports, including the Sheriff’s Activities League wrestling team. 

As Undersheriff, Jean recommends policy to the Sheriff and oversees the daily operation of Administration, Operations, Services, and the Coroner's Office.  

Tracey Stuart

Captain Tracey Stuart

Captain Tracey Stuart began her career as a Reserve Peace Officer with the Calistoga Police Department. In 1989, she became a full-time peace officer with Calistoga and worked there for six more years. In 1995, Tracey began working for the Napa County Sheriff’s Office. She was promoted to sergeant in 1998 and to lieutenant in 2007. Tracey has a Bachelor’s Degree in Management and is a graduate of the Sherman Supervisory Leadership Academy.

As the American Canyon Police Chief, Tracey is responsible for the management, direction, and control of operational and administrative aspects of the law enforcement in the City of American Canyon. Her current staff includes four sergeats, eighteen police officers and two police technicians

Leroy Anderson

Captain Leroy Anderson

Captain Leroy Anderson is a Sonoma native who began his law enforcement career with the Sonoma Police Department in 1975 as a Reserve Officer. He attended Napa Valley College, graduating in 1976 with an Associate’s degree in Criminal Justice. He was hired by the Napa County Sheriff’s Office in 1985. During his career, Leroy has worked in various bureaus and assignments including Patrol, Investigations, Coroner, Lake Berryessa, SWAT, DARE and as a Field Training Officer. In 2002, he was promoted to Sergeant and returned to the Patrol Division. He moved to the Community Services Sergeant position where he supervised the Animal Services Bureau and acted as the Department’s Search and Rescue coordinator. He is a graduate of the Sherman Block Supervisory Leadership Institute. In 2008, he was promoted to Lieutenant and in 2012 he was promoted to Captain and currently oversees the Service's Division.

As the Services Captain Leroy supervises the Coroner, Court Security, Civil Process, Transportation and Technical Services/Record's bureaus.

Douglas Pike

Captain Douglas Pike

Captain Douglas Pike started his law enforcement career with the United States Army, where he served as a Military Policeman from 1983 through 1986. Following his honorable discharge, he returned to Napa where he was hired by the Napa County Sheriff’s Office in 1987. During his employment with the Sheriff’s Office, Doug has worked in a number of different assignments. Doug was the first full-time deputy, and later sergeant, to be assigned to the Town of Yountville, which contracts with the Sheriff’s Office for police services. Doug also spent one year working as the Chief of Police for the Napa State Hospital.  Doug has completed the Santa Clara County Leadership Program and POST Management Course. 

Doug is currently assigned as a Operations Captain. Doug oversees the Operations Divsion, and is responsible for managing Patrol, the POPP (Problem Oriented Policing Program), and Range Programs.

Thomas Commander

Lieutenant Thomas Commander

Lieutenant Thomas Commander attained a Bachelor’s Degree in Public Justice from the State University of New York (Oswego) in 1989 and relocated from New York to California. He began his career with the Napa Sheriff’s Office in 1990, and worked as a police officer for the City of Vallejo and in several Sheriff’s Office assignments before being promoted to sergeant in 1999. Thomas implemented and acted as the coordinator for the first four Napa Sheriff Citizen’s Academy classes. Thomas was promoted to Lieutenant in 2005. He attended the Santa Clara County Leadership Program in 2002 and graduated from the West Point Leadership Program (WPLP) sponsored by the Los Angeles Police Department in 2008.  He currently manages the Investigation's Bureau. 

As the Detective Lieutenant, Thomas is responsible for supervising the Investigations Bureau, Crime Lab, and Property and Evidence staff.    

Pete Berg

Lieutenant Pete Berg

Lieutenant Pete Berg began his law enforcement career in 1989 with the Uk Police Department. Pete was hired in 1991 by the Napa Sheriff's Office. During his employment with the Sheriff's Office, Pete has worked as a K-9 Officer, a Firearms Instructor and a Field Training Officer. In 2003, Pete was promoted to sergeant and was assigned to the Court Security Bureau. He then transferred to serve as the sergeant in charge of law enforcement services for the Town of Yountville. Pete holds a Bachelor's Degree from Chico State University and is a graduate of the Sherman block Supervisory Leadership Institute. Pete is also a graduate of the FBI Acadmey, class 249. He also serves as the Regional Training Officer for CPOA and facilitates the Department's SCA Sheriff Citizen's Academy.

Pete is currently assigned as a Patrol Lieutenant. Pete supervises nightshift Patrol teams. 

Steve Blower

Lieutenant Steve Blower

Lieutenant Steve Blower started his law enforcement career in 1988 after being honorably discharged from the United States Army. He returned to Napa where he put himself through the 9th Napa College Basic Police Academy using the Veterans Educational Assistance Program. He was hired by the Napa Sheriff’s Office in January of 1989 after he graduated in the top three of his academy class. Steve worked on Patrol in unincorporated American Canyon and was the first Deputy assigned to the City of American Canyon after incorporation in 1992. He was a member of the first gang task force in Napa County, the Investigations Division and the Napa Special Investigations Bureau. After being promoted to Sergeant in 1999 he worked in the Napa Special Investigations Bureau, Patrol Division, Coroner’s Office, Civil Process Unit, Transportation Unit, Court Security and Investigations Division. Steve is a graduate of the POST Sherman Block Supervisory Leadership Institute.

Steve is currently assigned as the Lieutenant of Professional Standards and Training and Law Enforcement Liaison at the Napa County Department of Corrections and the Sheriff’s Department Court Services and Prisoner Transportation Unit. Steve is the first Lieutenant to serve in this position, which is a partnership between the Napa County Department of Corrections and the Napa Sheriff’s Office to support the growing needs of both departments.

Keith Behlmer

Lieutenant Keith Behlmer

Lieutenant Keith Behlmer attained a Bachelor’s degree in Public Justice, from The State University of New York at Oswego in 1981. He started his law enforcement career in 1986 when he was hired by the Napa County Sheriff’s Department and attended the Santa Rosa Police Academy. He has worked as a police officer for the City of Richmond and has had several positions within the Sheriff’s Department including, weaponless defense instructor, firearms instructor, K9 officer, narcotics investigator and SWAT. Keith was promoted to Sergeant in 2004 and has been assigned to American Canyon, NSIB and The Town of Yountville.

Keith is currently assigned as the Administrative Lieutenant. Keith is responsible for the Department's hiring and recruitment, and he also manages the Department's Training Program.