As of this date (28 May 2020) I can find no exam definitely available in this region now, but one perhaps in June. ARRL provides a list, but many previously scheduled exams appear to be boiler-plate announcements, and are of doubtful validity due to the Covid-19 restrictions.
However, one examiner is at least regularly updating their situation. If you wish to be examined for a new license or an upgrade and are willing to spend a pleasant day in Petaluma, see the scheduling web page of the Sonoma Mountain Repeater Society at this link: http://smrs.us/classes/ve2020.htm
(So far, the June 13 session has not been canceled).