Brian F. Theiss DVM

Dr. Brian Theiss grew up in Smithtown, New York and graduated from SUNY at Oneonta College. He received his veterinary degree from the University of Parma in Italy and has lived in Naples, Florida since 1992. Dr. Theiss enjoys surgery, acupuncture and K laser therapy to treat acute and chronic diseases.



Pet Health Library


We're committed to providing you the latest pet health information. Our educational resources are available to help you understand your pet’s healthcare needs.





Our Services


We strive to provide complete care for our patients. Learn more about all the services we provide.






New Clients


Bayridge Veterinary Hospital welcomes new clients! Complete our New Client Form online, or contact us today to learn more.