Mia Perez-Arroyo Esq.

Mia Perez-Arroyo

Professional biography.

Mia Perez-Arroyo’s practice is grounded in more than twenty-five years of legal experience and a sustained engagement with questions of professional responsibility, institutional power, and individual rights. A retired California Deputy Attorney General and former Lead Prosecutor, she represents individuals in employment disputes and medical and dental malpractice matters throughout California.

After graduating from UCLA School of Law in 1999, Mia joined the California Department of Justice’s Appeals, Writs and Trials Section. Her early appellate work included In re Randy G., a published California Supreme Court decision, and People v. Harris. Within her first year at DOJ, she moved into the Health Quality Enforcement Section, which California law directed be staffed by experienced and able employees capable of handling the most complex and varied disciplinary actions.

For nearly two decades, Mia served in the California Department of Justice, developing particular expertise in the corporate and unlicensed practice of medicine and unfair-competition enforcement. Her enforcement work reached beyond individual practitioners to the businesses providing medical services and the people controlling them. In litigation involving Rosmar Imaging Center in Glendale, she represented the Medical Board in an action that resulted in a permanent injunction against the unlawful operation of a diagnostic radiology business. Her broader work encompassed disciplinary prosecutions, license restrictions, administrative hearings, injunctive proceedings, and judicial review.

After serving as a Deputy in District Office, Mia became one of HQE’s first Lead Prosecutors in 2006. The position carried district-wide responsibility for the legal direction and oversight of healthcare investigations. She reviewed incoming complaints, determined whether further investigation was warranted, and approved or modified investigative plans. She directed investigators on matters assigned to her and monitored the progress and legal direction of matters assigned to other deputies. Her work also included leading trial deputies, handling contested proceedings, and directing undercover investigations. These responsibilities required judgment at every stage: identifying what the evidence established, deciding what further investigation was necessary, and determining when the state should take action.

Read the statutory HQE mandate ↗︎

Read the 2006 Lead Prosecutor protocol ↗︎

Today, Mia applies that experience to representing people whose livelihoods, health, and futures have been affected by alleged wrongdoing. Her background gives her a substantial foundation for examining how professional and institutional decisions are made, documented, and defended. Her practice brings that scrutiny to employment discrimination, harassment, retaliation, and claims arising from medical and dental care.

Mia’s professional life also extends to tribal justice and legal education. Separately from her California private practice, she serves as Chief Judge and General Counsel for the Texas “Yorimea” Band of Yaqui Indians. She has taught trial advocacy at USC Gould School of Law and mentored aspiring attorneys. In September 2026, she returned to UCLA Law as a panelist at the Women LEAD Summit, contributing to a discussion of judicial independence, professional responsibility, and public confidence in the courts.

Tribal government service is separate from the firm’s private practice.

Her background in the arts adds another dimension. A UC Berkeley graduate in Ethnic Studies and Dramatic Art, Mia continued performing professionally while attending law school. Working as Mia Perez, her credits include Moesha, City Guys, and the 1997 television special Hey, Hey, It’s the Monkees. Those pursuits remain part of a career distinguished by the breadth of her experience and the seriousness with which she approaches her work.