California's medical board is less likely than those in other states to revoke doctors' licenses or take other serious disciplinary action, according to a consumer advocate's report. California ranked 41st among boards in all 50 states and the District of Columbia in taking serious disciplinary action against doctors last year, according to the report released by Public Citizen, a Washington-based consumer group. The report, based on Federation of State Medical Boards figures, defined serious discipline as license revocations, surrenders, suspensions, and probation or restrictions.