Westamerica Bank, Novato Branch Basic Info Reviews Routing Numbers Map & Direction Name: Westamerica Bank, Novato Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 7333 Redwood Boulevard Novato, California 94945 Marin County View other branches Phone: 415-898-2003 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer121137001YN121140218YY121141000YN121141615YN From: To: