Jill André, DVM, Owner

Dr. Jill André was born and raised in Ann Arbor, MI and earned her DVM degree from Michigan State University in 2003. She practiced in Michigan for 11 years prior to moving with her husband back to his home state of California in 2014. For the past 2 years Dr. André has worked as a part time and relief veterinarian at a number of practices in Northern California. She met Dr. Mary Diedrich at one of these clinics and they began planning for their own hospital in 2015.

Dr. André loves all dogs and cats but is particularly fond of Boxers and Golden Retrievers. Her current furry family includes 10 year old Boxer, Cali; 6 year old Yorkie-Pekingese mix, Maxwell; and 4 cats, Spike, Buffy, Phineas and Luna Lovegood. Over the years she has also been a mom to rabbits, guinea pigs, rats, hamsters, and gerbils. Dr. André’s favorite aspect of being a veterinarian is educating clients on how to best care for their pets; she recommends the same medical care for her patients that she provides for her own pets.

Email Dr. Jill André


Lacie Carlisle, DVM


Dr. Lacie Carlisle began her career in the veterinary world in 1999 as a technician, later becoming a registered veterinary technician (RVT), and finally after much hard work, a veterinarian. She also holds a Master’s degree in nutrition with an emphasis on companion animal nutrition. Dr. Carlisle received her veterinary degree from UC Davis in 2011. She has practiced in the greater Sacramento and Bay areas since graduation on a full time, part time, and relief basis. She loves her work with animals and their human family members, and holds a deep respect for the inherent bond between the two. Dr. Carlisle has a special interest in internal medicine, exotics, and nutrition (of course). She especially values educating clients on how best to care for their beloved animal companions as well as aiding in an understanding of any illnesses that may be present so that clients feel integral and empowered in the care of their pets. When not crawling around on the exam floor with dogs and cats, she enjoys time with her partner, their pit bull mix Karma, rescue greyhound Jasper, and special needs bearded dragon Poppy. She also enjoys creating intricate mosaic works from stained glass, some of which you may see around the clinic. Dr. Carlisle is very excited to be joining the Happy Tails team on a part time basis.

Email Dr. Lacie Carlisle


Mary Diedrich, DVM, Owner

Dr. Mary Diedrich has been working in the veterinary field for 21 years!

It was her love of animals that inspired her during high school to become a kennel attendent at the local hospital in McHenry, Illinois where she grew up. She continued to work in various clinics as a receptionist and tech assistant while she earned her BA in Biology from Northwestern University in Evanston, Illinois.

After college she moved to California and became a registered veterinary technician (RVT) while working at the UC Davis Veterinary Teaching Hospital in the Small Animal ICU. She also worked at Woodland Veterinary Hospital where she was promoted into management as the lead technician.

Dr. Diedrich achieved her dream when she graduated from UC Davis Veterinary School in 2008 as a member of the Phi Zeta honor society. After graduating, she completed a 1 year rotating small animal internship at Pet Care Veterinary Hospital in Santa Rosa, CA.

Once finished, she decided to brave the cold again and move back to the Chicago area to be closer to her family. For 2 years she worked as an emergency vet at a specialty hospital in the city. She then moved to the suburbs and worked at a small animal general practice for almost 3 years.

Dr. Diedrich is happy to be back in sunny and warm California where she has been working at various clinics for the last 2 years both as a general practice and emergency vet. She met Dr. André at one of those practices and is very happy to finally be settling down. She is excited to build her dream hospital with someone who has a shared vision for a low stress clinic that truly puts pets first.

Dr. Diedrich has a special affection for her feline patients and it’s not uncommon to find her cuddling a kitten that she’s helped rescue. She is a member of the American Association of Feline Practioners and is really focused on making the clinic a Feline Friendly Practice so that your kitties love seeing us and much as we love seeing them.

Don’t worry, she loves dogs too! They just tend to be a little more happy to see us naturally. She especially loves large dogs like Labs, Goldens, and Great Danes and is not afraid to get on the floor for a cuddle. She loves Great Pyrenees and has a 115lb Bear who you’ll see around the clinic that looks like a polar bear but is a giant softie.

She also has a special interest in small animal behavior so if you have a question feel free to ask since this is an important part of your pet’s health too.

Dr. Diedrich really enjoys emergency and critical care medicine as well as surgery. She will be staffing the later shift so that we can help care for your animals with any illnesses or injuries in the evening hours.

When she is not busy working, she enjoys hiking with her Great Pyrenees named Iorek (aka Bear), sking, camping or backpacking, or relaxing at home with her partner Brad and their 3 cats Maverick, Arya, and Dante.

Email Dr. Mary Diedrich


Jessica Coffman, RVT

Jessie began working in the veterinary medicine field in April 2015, graduated from the RVT program at Carrington College in September 2015, and acquired her license to be a registered veterinary technician in 2016. Her unconditional love for animals is what got her started and keeps her in the veterinary medicine field. What she finds most interesting are the diagnostics that are sometimes needed such as analyzing blood work, radiographs (x-rays), etc. She enjoys almost every part of her job but knowing what she’s doing is helping to make a positive change in an animal’s life is the best part. When not at work Jessie is at home with her fiancé and their two crazy, spoiled, perfect cats.


Lisa Baumgardner, Technician

Lisa has worked in the Veterinary field for 27 years. Her favorite part of being a Technician is the one on one contact with the animals. She loves the fact that she’s with the patients through each step of their visit, and that she can make a difference in their lives.

Her current furry family includes cats and rabbits, and she spends much of her free time with them . When not working , Lisa enjoys listening to live music, going to the movies, hiking, and being Mom to her teenage son.
Lisa is excited to be a part of the Happy Tails team because she loves the idea of practicing Fear Free medicine. She is also very excited that we are a Feline Friendly Practice!


Keirstin Lockhart, CSR

Keirstin was born and raised in Fairfield and has always had a passion for animals both big and small. She loves to learn anything animal related. As a child, she spent most of her time at a local barn where she took horseback riding lessons. At 12 years, old she was gifted a horse named Tobey, who belonged to a friend that passed away two years previously. They had and extremely close bond and competed in horse shows around the area. After graduating high school, she was offered a job at a corporate grooming salon as a bather and worked her way up to becoming a groomer. She loved being able to make animals feel their best. Keirstin is going to school to further her education in the veterinary field and is ecstatic to be a part of the Happy Tails family. While not at work Keirstin enjoys anything Harry Potter, spending time with her close family and friends, and being at home with her little family that consists of her boyfriend, 3-year-old chihuahua mix, Tink, and Great Dane puppy, Ghost.


Kelli Sohnrey, CSR

Kelli’s love of animals led her to work as a receptionist at a Veterinary Hospital in the bay area. She worked there for just over two years before moving to Vacaville and becoming a full time stay at home mom to her two boys. After 12 years she is thrilled to be back in the Veterinary field. She loves seeing the animals come in and chatting with their people about them. When not working she loves to hike, camp, and hangout with her husband and boys. She currently has a huge fluffy cat named Mr. Bob and a very spoiled pitty mix, Roxy.