# Thomas E Casselberry Canonical URL: https://heypaww.com/vets/clinic/thomas-e-casselberry-napa-valley-ca-36499 Veterinary clinic listing in Napa Valley, CA. - Address: PO BOX 5067, Napa Valley, CA, 94581 - Phone: (707) 255-1354 [Directions in Google Maps](https://www.google.com/maps/dir/?api=1&destination=PO%20BOX%205067%2C%20Napa%20Valley%2C%20CA%2C%2094581) Directory snapshot: September 16, 2026. Contact the clinic directly to confirm its address, availability, hours, and services. Map coordinates are approximate; this is not a verified entrance. Paww is an independent directory and does not provide veterinary care or endorse this listing.