Our caring and compassionate veterinary care team!

Meet the Veterinarians & Team of Napa Small Animal Hospital in Napa, California! We’re pleased to provide exceptional vet care for your pets!

Please call us at 707-257-8866 to speak to one of our caring veterinary staff members!

At NSAH, our philosophy has always been to treat all animals with the love and dignity that they deserve, and we believe that this requires not only the best medicine but also deep respect and appreciation for the sanctity of the human-animal bond. It is this belief that grounds our mission to bring not only the best quality medicine but also the most tender, loving care to your pet with every visit.

Whether your pet comes to us for a routine checkup or a necessary procedure, you can rest assured that he or she will be handled with the utmost kindness and respect. Our knowledgeable and considerate team knows that every animal has a unique history and set of experiences, and we are adept at working with different pet personalities safely and compassionately. We are passionate about what we do, and we value the contributions that each and every member of our team makes towards meeting our goals.

We build lasting relationships between our veterinary team and our patients and clients. And while we always love seeing you, we always strive to help you keep your pets healthy and happy at home. At NSAH, we pledge to continue to educate our clients on animal wellness and to promote compliance with all recommended pet health protocols. We are here for your pets and we are here for you, period.

Current Staff Members

  • Dr. Mary Whitehill
  • Dr. Dorothy Dyson
  • Dr. Nathaniel Fichtenberg
  • Leticia Vega
  • Veterinary Technicians & Assistants
  • Customer Service Representatives
Dr. Mary Whitehill
Medical Director

Dr. Mary Whitehill joined founder, Dr. Rock Irvine, as his partner at the Napa Small Animal Hospital in 1991. At the time, Napa Small Animal was just a two doctor practice.

She grew up close by in San Anselmo (Marin County) in a home filled with six brothers and sisters, dogs, cats, horses, ponies, rats, rabbits, and even a tarantula! She announced at 9 years old to her best friend that she was going to be a veterinarian when she grew up. That dream eventually became a reality as she completed first her undergraduate degree in Nutrition in 1978 and then veterinary school, both at UC Davis, in 1984. Dr. Mary initially practiced three years in Southern California (at Chatoak Pet Clinic) and 3 years in Sacramento (at Carmichael Animal Hospital) before coming permanently to Napa in 1991. Between Southern Cal and Sacramento, she briefly worked at Alley Cat Veterinary Hospital in 1987 in Napa seeing patients and performing surgery for a low cost spay/neuter clinic associated with the hospital.

Dr. Mary has developed interests in dermatology and ultrasound over the years. She enjoys seeing dogs and cats, kittens and puppies (and their people!).

Dr. Mary lives in Napa with her Taiwan street dog, Kai. Her previous dogs have all been rescues, mostly Labradors and lab mixes, and several originally adopted from the Napa County Animal Shelter. In her spare time, she enjoys walking Kai in the Hendry vineyard close to her house, exercising, reading, traveling to Hawaii, and seeing friends and family. She is a breast cancer survivor since 2005 and strives to provide the kind of compassionate care to her patients that she received during her own treatment.

Dr. Mary passionately supports the mission and the work of Napa Humane. She has served on their board of directors and completed her second term as president of the board at the end of 2016. She believes strongly in the good work they do in the community. She continues to volunteer and fundraise for them at every opportunity. In addition to serving on the board at Napa Humane, she also served on the board of directors of the Girl Scout Council of Napa-Solano for 12 years, the last 5 of those years serving as the board chairperson. She finished her service to the Girl Scouts in 2005. She grew up as a Girl Scout and remembered how important it was to inspire girls to be the best that they could be.

Having recently celebrated 30 years at Napa Small Animals Hospital, she is not sure where the time has gone. She is proud of how the hospital has grown and continues to strives to serve the needs of pets and their families of the Napa community.

Dr. Nathaniel Fichtenberg

Born and raised in Sonoma, California, Dr. Fichtenberg graduated from Justin-Siena High School before attending the University of California at Santa Barbara.  After spending a few years in the pharmacy industry, as well as volunteering for AmeriCorps, a national community service organization, Dr. Fichtenberg attended veterinary school at The Royal Veterinary College in London, England, graduating in 2003.

Upon graduation and returning to California, Dr Fichtenberg lived and worked mainly in the East Bay as well as in San Francisco for the next 15 years before returning to his roots here in Napa to raise his young family.   He has a particular interest in dentistry, diagnostic imagining as well as surgery.

Outside of work, Dr. Fichtenberg spends his time with his wife, Véronique, raising their young children Gigi and Ben as well as their dog, Roger and cat, Louie da Chairman. 

Dr. Dorothy Dyson

Bio Coming Soon

Leticia Vega
Practice Manager

Bio Coming Soon

Veterinary Technicians & Assistants

Jessica Stiles

Registered Veterinary Technician

Susan Steidley

Veterinary Technician

Katie Toole

Veterinary Technician

Amy Pargett

Veterinary Assistant

Brandi Garraty

Veterinary Assistant

Jackie Borrayo

Veterinary Assistant

Amanda Schramm

Veterinary Assistant

Michaela Juarez

Veterinary Assistant

George Reid

Veterinary Assistant

Customer Service Representatives

Jasmine Hamilton

Lead Customer Service Representative

Kayla Vanvleet

Customer Service Representative

Nevaeh Alvarez

Customer Service Representative