Our caring and compassionate veterinary care team!

Meet the Veterinarians & Team of Windsor Animal Hospital in Santa Rosa! We’re pleased to provide exceptional vet care for your pets!

Please call us at 707-838-3031 to speak to one of our caring veterinary staff members!

Our Doctors

DR. PATTI PIPER, DVM

Dr. Piper received her doctorate in Veterinary Medicine from UC Davis in 1980. Her special interests are dermatology and hormonal diseases. Her personal interests include gardening (with her pets gathered around her) and cooking (with her family gathered around her). At home she has her constant companion “Halle” the Doberman, and two cats named Fubar and Al. Dr. Piper is married to Dr. Sloan. They have two children.

DR. L. DOUGLAS SLOAN, DVM

Dr. Sloan received his doctorate in Veterinary Medicine from UC Davis in 1981. He was a small-animal emergency clinician for 11 years. His special interests are soft-tissue surgery, emergency medicine, advanced dentistry and bio-tech consulting on new medical devices. His personal interests include studying history and writing. At home he has a Doberman “Halle” and two cats “Fubar” (which stands for “fractured up beyond all recognition”) and “Al” a loveable grey. Dr. Sloan is married to Dr. Piper. They have two children, one of whom is currently in Veterinary School at UC Davis.

DR. KAREN BLOUNT, DVM

Prior to joining Windsor Animal Hospital, Dr. Blount practiced at Mid Peninsula Animal Hospital in Menlo Park, since 1999. Her special interests include veterinary dentistry, surgery and the treatment of exotic pets, such as rabbits, guinea pigs, rats and hamsters. Dr. Blount previously worked as a geologist on the east coast. Her family consists of her partner, Renee, who is a professional musician and graphic designer, their two dogs and two cats. Her chihuahua Jack was a rescue, and her terrier-mix Marley was dumped at Mid Pen as an 8-week old blind puppy with a broken leg–Dr. Blount just had to keep her! Other interests include playing classical piano, growing orchids, hiking, biking, and skiing.

Dr. Paula DeCosta, DVM

Dr. DeCosta obtained her Doctorate in Veterinary Medicine in 1991 from UC Davis. Dr. DeCosta owned a veterinary practice in the East Bay and practiced there for 26 years. In early 2019, Dr. DeCosta decided it was time for a change; she sold her practice and her home and moved to Windsor, along with her husband and her kitty, Nibbles. Dr. DeCosta comes to us as a Certified Veterinary Acupuncturist, with training in traditional Chinese veterinary medicine. In her time off, Dr. DeCosta enjoys volleyball, basketball, hiking and jet skiing.

Dr. Joe Graff, DVM

Dr. Graff (left) grew up in Santa Rosa, where he attended Piner High and the Santa Rosa Junior College. He majored in biochemistry before obtaining his Doctorate of Veterinary Medicine at UC Davis.

Dr Graff was a charter member of the California Veterinary Medical Association's "Human/Companion Animal Bond Committee", which sought to promote compassion and understanding with both owners and their pets.

After 25 years in emergency medicine in LA and SF, Dr Graff joined Windsor Animal Hospital in 2014. He is very glad to be back in Sonoma County, where he lives with his dogs and his family.