Meet our talented doctors and staff!
Dr. Houston started The Pet Hospital in 1992 as a place to provide the best veterinary care for pets and their owners in a great environment.
He graduated from Colorado State University School of Veterinary Medicine in 1989. He earned his master’s degree in biology from the University of New Mexico and a teaching certificate from the University of Texas in Austin.
Prior to becoming a vet, Dr. Houston taught science for several years for middle school, high school, and college.
As the son of a geophysicist, he has lived all over the world, including Singapore, England, and more states than he can remember.
In his spare time, Dr. Houston enjoys adventure runs around the world, hiking, camping, and being outdoors with his dog Petey.
Dr. Mike Casemier
Dr. Casemier was born and raised in Grand Rapids, MI, but now calls San Diego home.
He earned his undergraduate degree from Grand Valley State University after an honorable discharge from the U.S Navy. He then went on to earn his veterinary degree from Michigan State University.
He worked with horses early in his career but has since focused on companion cats and dogs. Dr. Casemier is grateful for long-term relationships he develops with his clients.
When he isn’t taking care of his patients, Dr. Casemier enjoys spending time with his nine-year-old chocolate lab named Dexter and his five-year-old, aptly named cat, Lilith.
Dr. Marie Twibell
When she isn’t taking care of her patients, Dr. Twibell enjoys horseback riding, hiking, reading, spending time with family and friends, and attending church and Bible studies. Dr. Twibell and her husband also have a shelter dog named Harper that provides them with much love and laughter.
Dr. Emi Daniel
Dr. Daniel has her own Lil pack of senior dachshunds as well as hamsters, chinchillas, and guinea pigs!
She loves to stay healthy and fit so in her free time she is an avid runner, and hiker and even teaches yoga.
A San Diego native, Brittany has been working in the veterinary field since she was 17, and she has been a part of our team since 2013. Outside of the hospital, she spends her time keeping up with her daughter, two Chiweenies (Baby Dog and Dash), and her newest rescue, Foxy the chihuahua.
Registered Veterinary Technician
Originally from Atascadero, CA, Tiffany has been living in San Diego for seven years and has been with us for three years. Tiffany graduated from San Diego Mesa college’s Animal Health Technologies program in 2015 and is now working as a registered veterinary technician at The Pet Hospital. She and her husband have welcomed their first fur baby Tucker, a German Shorthaired Pointer in January 2020. So she spends her days off at the dog parks, beach, or just taking him hiking.
Native to San Diego, Isela has been in the veterinary field since 2015. She came to us after working at the animal shelter as well as other private practices. When she is not working hard at the hospital, she is taking care of her two fur kids: Mia the Jack Russell Terrier and Jayden the lab-pitbull mix, both two years old. She also loves spending time with her family and friends. Isela is working on furthering her career in the veterinary field by taking her boards to become an RVT.
Sarah has been a part of The Pet Hospital family since May 2021, and she has been working in the veterinary field since 2007. Sarah graduated from SDSU in 2007 with a master’s degree in Psychiatric Rehabilitation. Sarah and her daughter love spending time at home with their 4 fur babies, Blue the sweet Staffordshire Terrier, Pepper Poppet, the cutest Frenchie, Zoe Zombee the baby Sphynx, and Flash Gordan, the chubby Maine Coon. Sarah’s hobbies include collecting dolls, Acutonics (which is an energy-based non-invasive treatment that is like acupuncture), and Entomology (the scientific study of insects).
Born and raised in San Diego, Angela has worked with animals since she was 19 years old. She has done most of her work with parrots, waterfowl, dogs, and cats. Angela worked as a Veterinary Assistant/Receptionist for 6 years before deciding to work solely in reception. When Angela is not at work she is spending time with her fiancé and two boys. Angela currently has no pets but is always keeping her eye out for her next rescue.
Originally from Colorado, Cyra grew up in a small farm town where her love for animals began. Cyra joined our team in July 2021 after previously working as an assistant manager at a dog groomer, and prior to that, a cashier at Petco. When she is not working Cyra, and her wife have another full-time job taking care of their 9 fur babies. 3 cats; Skipjack, Mackerel, and Anchovy, along with 6 dogs; Flying Dutchman (Giant Schnauzer), Mako Shark, Mama Odie, Tornado Potato, Tsunami (all French Bulldogs), and Ween Bean (Chihuahua). Cyra also enjoys reading, Dungeons and Dragons, magic gathering, board games, and video games.
Lori graduated from San Diego Grooming School in 1980. With over 35 years of grooming experience, Lori has a special interest in German Shepherds and Shih Tzus. When not grooming, she enjoys solving cryptograms.
Get In Touch
We are proud to serve the San Diego, CA area for everything pet-related.
Our veterinary clinic and animal hospital are run by Dr. Grafton Houston, who is a licensed, experienced San Diego veterinarian. You can count on us to be there for you and your four-legged family members when you need us most.
Sat - Sun: Closed
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