Played by Anne Betancourt

Judge Isabel Hernandez presided over the Sharon Brant vs Matthew Calder case in episode 1x01 [Head Cases] and the Donald Wharton vs Adele Freeman case in episode 2x20 [Chitty Chitty Bang Bang].

Anne Betancourt
Anne Betancourt also played a character named Judge Hernandez on several episodes of the Alicia Silverstone sitcom Miss Match, one of which also featured Season 1 regular Lake Bell. Betancourt's first TV credit was a 1983 episode of Hill Street Blues. Her long list of guest appearances since then includes episodes of LA Law (1987) and The Practice (2001). She has also had small parts in feature films, including James Spader's 1988 film Jack's Back, and the more recent Spider-Man 2 (2004) and Mission Impossible:III
(2006).

Anne Betancourt at the Internet Movie Database.

Episode appearances:
1x01 [Head Cases]
2x20 [Chitty Chitty Bang Bang]