Meet Our Team

Dr. Karlton H. Pfann D.V.M: Owner/Veterinarian

Dr. Karlton Pfann was born and raised in Ithaca, New York.  He graduated from Cornell University in 1989 with a Bachelor of Science degree.  After working a few years in the field of biotechnology, he attended UC Davis School of Veterinary Medicine.  He has been practicing small animal veterinary medicine here in beautiful Sonoma County since graduating in 1998, and he has a well-known passion for exotic mammal medicine.

Dr. Pfann and his wife Michelle (who grew up in Forestville) have 2 children, Kieran and Colton.  Their household also includes four cats (Ping, Clara, Edwin, and Kura) and five indoor rabbits (Cora Pants, Acorn, Dandelion, Timmy and Camilla the One Eyed Pirate Queen).  During his down time, Dr. Pfann enjoys distance running and playing the ukulele and electric bass.

Amanda: Practice Manager

Amanda is a Petaluma native who loves animals of all kinds. She attended UC Davis and graduated with a degree in Animal Science in 2009. At home she has three kitties, Cooper, Penelope, and Bonzai who were all adopted and her dog Xander who was adopted through The Tiny Pitbull. Amanda is a friendly face that is always willing to help!

Erin: Treatment Manager

Erin was a young Petaluma transplant, doing most of her growing up here. We first met her when she started volunteering with us in 2000 at age 15, hired in 2004 and has been with us ever since. At home she has a gaggle of cats that includes Nell, Scrub, Miki,Tyrone, Tanzi, and Charlotte all of which were adopted from the local shelter.

Nikita: Registered Veterinary Technician


Nikita has been employed at Brandner Veterinary Hospital since December of 2008.  She passed her exams and became a registered technician January of 2014.  At home she has her kitties Marlo & Marshmallow whom she adopted and new puppy Bean.


Taslynn: Receptionist

Taslynn is a true Petaluman, she and her brother were both born and raised here. At home she has a kitty named Gene who is an adorable wild child and the cutest most lovable puppy Charlie, both were adopted from PASF. Her experience with customer service and history of pharmacy knowledge is an asset to our team. On her off time she is taking classes at Santa Rosa Junior College for the Veterinary Technician Program.

April: Receptionist


April moved to Petaluma in 1993 with her family.  An experienced business owner of various endeavors, she has decided to take a different path in life, joining us in December 2013.  She is very happy to be with us and has enjoyed getting to know each of our clients.  At home she has a dog named Ellie and one kitty, Katie.


Brittany: Veterinary Assistant


Brittany is back! She has returned to us after years of both college and working in child welfare. We are so thankful for her saving us during the pandemic. It is so nice to have someone so compassionate, hard working, and beloved in the Brandner House again. At home Brittany has 1 chinchilla, Romeo, and 3 cats adopt from local shelters, Herbert, Iris, and Gidget.

RETIRED: Dr. Barry J. Santero, D.V.M: Veterinarian

It is with mixed feelings that we announce that Dr. Barry Santero has retired.  It has been a slow transition over the last two years, yet too quick in many ways.  We truly appreciate his dedication, compassion, friendship, and humor.  He will be deeply missed, but after 40 years of commitment to the community and their pets, he deserves the opportunity to spend more time with his grandchildren, traveling, and supporting his favorite sports team (the San Francisco Giants, of course!).  The entire staff at Brandner Veterinary Hospital wish him the best as he embarks on new adventures. -March 29, 2016