Legal Question in Elder Law in California

Possibly, though you may have to do it as part of a conservatorship proceeding if he is unable to handle his affairs himself. A quicker solution might be to file a report and complaint with the local district attorney's office. Pretty much every county has a division that handles elder abuse cases. There may also be an adult protective services department at the county level, depending which county he lives in. Since you gave an out-of-state zip code, I can't point you to the relevant county's resources.