Is it handicap accessible?

There is elevator

Of course, it's the law

They have elevators.

All public places in California are.

If you are thinking about the Jasper Johns exhibit, it's all on the first floor and you should have no problems. Other than the crowds. ;-)

The museum is wheelchair accessible... Some programs however have limited seating for disabled persons during these special events.

Yes

Yes it is handicap accessible. The museum has ramps and an elevator.

Elevator

yes there's an elevator