Gov. Gray Davis (Democratic), 2000

• Adjunct Professor of Law, Hastings College of the Law · 2002–2004
• Judge, Contra Costa Superior Court · 1995–2000
• Presiding Judge, Contra Costa Superior Court · 1999–2000
• Dean, B.E. Witkin Judicial College · 1995–1996
• Judge, Mt. Diablo Municipal Court · 1980–1995
• Deputy Public Defender, Contra Costa County · 1973–1980
• Associate, Cooley Godward · 1971–1973
• Law Clerk to Judge Alvin B. Rubin, U.S. District Court, Eastern District of Louisiana

• C.F. v. Alternative Family Services, Inc. (opens in a new tab)

  Jun 4, 2026 · Affirmed

  Held foster agencies liable if they knew or should have known of a foster parent's risk of abuse.

• Independent Office of Law Enforcement Review and Outreach v. Sonoma County Sheriff’s Office (opens in a new tab)

  Mar 26, 2026 · Reversed

  Held a county sheriff oversight office has authority to issue subpoenas and ordered compliance.

• Bartholomew v. Parking Concepts, Inc. (opens in a new tab)

  Feb 5, 2026 · Reversed

  Held collecting license plate data without the legally required policy constitutes harm.

• Mark B. Simons | First Appellate District (court bio) (opens in a new tab)

Gov. Gray Davis (Democratic), 2000

• Adjunct Professor of Law, Hastings College of the Law · 2002–2004
• Judge, Contra Costa Superior Court · 1995–2000
• Presiding Judge, Contra Costa Superior Court · 1999–2000
• Dean, B.E. Witkin Judicial College · 1995–1996
• Judge, Mt. Diablo Municipal Court · 1980–1995
• Deputy Public Defender, Contra Costa County · 1973–1980
• Associate, Cooley Godward · 1971–1973
• Law Clerk to Judge Alvin B. Rubin, U.S. District Court, Eastern District of Louisiana

• C.F. v. Alternative Family Services, Inc. (opens in a new tab)

  Jun 4, 2026 · Affirmed

  Held foster agencies liable if they knew or should have known of a foster parent's risk of abuse.

• Independent Office of Law Enforcement Review and Outreach v. Sonoma County Sheriff’s Office (opens in a new tab)

  Mar 26, 2026 · Reversed

  Held a county sheriff oversight office has authority to issue subpoenas and ordered compliance.

• Bartholomew v. Parking Concepts, Inc. (opens in a new tab)

  Feb 5, 2026 · Reversed

  Held collecting license plate data without the legally required policy constitutes harm.

• Mark B. Simons | First Appellate District (court bio) (opens in a new tab)