What banks or credit unions participate in the medallion signature guarantee program in Marin County CA?

In Marin County, CA, several banks and credit unions typically participate in the medallion signature guarantee program, including larger institutions like Bank of America, Wells Fargo, and Citibank. Additionally, some local credit unions may also offer this service. It's advisable to contact these institutions directly to confirm their participation and any specific requirements for obtaining a medallion signature guarantee.