About Derek Richard
Derek Richard Ewin is a seasoned criminal defense attorney based in Walnut Creek, California. With a legal career that began in 1993, he has dedicated his practice to various areas of criminal law, including DUI and DWI, business law. Animal law, as well as stockbroker and investment fraud. Mr. Ewin earned his Juris Doctor from the University of California, Davis, School of Law in the same year he began practicing law. His law school experience was marked by significant involvement—he was a member of the National Moot Court Team, served as a Justice on the Moot Court Board, participated in Mock Trial. Tutored students in legal writing.
Following his graduation, Mr. Ewin embarked on his legal journey as a Certified Law Clerk at the Yolo County District Attorney’s Office. There, he contributed to the Major Narcotic Vendor Team and the Traffic Violation Team, gaining inexperience in prosecution. His career progressed as he took on a role in the Ventura County District Attorney’s Office, where he focused on the Misdemeanor Team. This early experience laid a strong foundation for his future work in criminal defense. From 1994 to 2005, Mr. Ewin served as a Deputy District Attorney at the Contra Costa County District Attorney’s Office.
His responsibilities spanned various divisions, including Misdemeanors, Felony Trial Team, Domestic Violence/Sexual Assault, and Gang/Homicide. This experience in prosecution provided him with a unique perspective that he now applies to his defense practice. In 2005, he founded the Law Office of Derek R. Ewin, where he has been providing comprehensive criminal defense services throughout the San Francisco Bay Area. Mr. Ewin's caseload is diverse, encompassing serious offenses such as robbery, homicide, DUI, drug offenses, theft, burglary, domestic violence, and gang-related crimes. He has successfully defended hundreds of cases, including misdemeanors, felonies, and DUIs.
His reputation as a skilled attorney is reflected in his active membership in professional organizations, including the California State Bar, the California Lawyers Association, and the California DUI Lawyers Association. He is also affiliated with the California Public Defenders Association and the National Association of Criminal Defense Lawyers. Born and raised in the East Bay, Mr. Ewin continues to reside in the area with his family. His personal interests include dirt bike riding, mountain biking, shooting, and enjoying the outdoors. Beyond his legal work, he is committed to his community, serving as a teacher at his local church. His multifaceted life—both professionally and personally—reflects a deep commitment to justice and community service.
