DVM, CVAT (Certified Veterinary Acupuncture Therapist,) Hospital Owner
Dr. Diana Stiles is native to Southern California, having grown up in the nearby San Gabriel Valley. From the age of 9, she knew she wanted to be a veterinarian and passionately pursued her dream. She is a 2001 graduate of Colorado State University, College of Veterinary Medicine and Biomedical Sciences. Upon graduation from Veterinary School in 2001, she returned to Southern California to start her veterinary career. Her main interests include internal medicine and preventative care, and she especially enjoys being in the exam rooms talking with her clients. She is grateful for the many clients who have been with her for years, allowing her to be a special part of their pets' lives from their early years all the way into their senior years. She loves running Rancho West Animal Hospital and looks forward to continuing to provide high quality, compassionate care to the pets of the Inland Empire. Dr. Stiles also volunteers her time with a local teen parents' outreach group (Growing Pains) and several animal rescues. She is also an active member of the American Veterinary Medical Association. Dr. Stiles is married to her high school sweetheart, with whom she has three beautiful children. They also share their home with their three rescue dogs and two pet rats. In her free time, she enjoys spending time with her family, camping, water sports, and reading.
DVM
Dr. Ashley Smith is an Associate Veterinarian at Rancho West Animal Hospital and has wanted to be a veterinarian since childhood. She earned her undergraduate degree in Biology from UCLA in 2011, followed by her Doctor of Veterinary Medicine (DVM) degree from Ross University Class of Veterinary Medicine in 2019. She completed her clinical year of veterinary school at Oregon State University. Dr. Smith shares her home with four beloved pets—three cats, Neptune, Persephone, and Pluto, as well as a dog named Pixie. She hopes to also have pet rats again in the future. In her free time, Dr. Smith enjoys swimming, snorkeling, hiking, drawing, painting, reading, and spending time with her family.
Hospital Manager
Roxanne is our Hospital Manager. She has been working in the veterinary field for over 10 years and has a strong passion for both helping the animals, as well as the clients. Since she was a little girl, she has always had a special bond with animals and has had a number of family pets over the years, including dogs, cats and fish. Currently, Roxanne and her high school sweetheart own two cats, Ollie and Mollie, and a Pit bull named Dolce. In her free time, she loves to spend time with her other half, her pets, and her family.
Lead Tech/Registered Veterinary Technician (RVT)
Jessica is our Lead Technician and one of our licensed RVTs. Jessica started at Rancho West as an intern while attending school to obtain her RVT license, and has been a valuable part of our Rancho West family ever since! Jessica has two dogs, Abby and Penny, that she constantly spoils. In her free time, she loves spending time with her family and friends.
Lead Receptionist
Bethany is our lead receptionist, making her one of the first smiling faces you will see when you enter Rancho West. Bethany received her Associate's Degree in Biology from Chaffey College and her Bachelor's Degree in Animal Science from Cal Poly Pomona. She loves to learn and is planning on pursuing her Master's Degree in either Animal Science or Business Administration. In her free time, she loves watching movies, going to new places, spending time with her dogs at the park, and helping animal rescues. She enjoys creating bonds with our clients and interacting with all of the amazing pets that come in to our hospital!
Registered Veterinary Technician (RVT)
Mayra is an RVT at Rancho West Animal Hospital. Mayra started at Rancho West as an extern while attending Platt College while pursuing a Registered Veterinary Technician license and is now a valued member of the Rancho West Family. She is a proud dog mom to a beautiful pup named Momoa (Mo). Mayra loves coffee, game nights, and going on new adventures.
Registered Veterinary Technician (RVT)
Analisa is an RVT at Rancho West Animal Hospital. Analisa graduated from Platt College in 2022 with her Associate’s degree in Veterinary Science. She loves spending time with her family and making memories with her 3 quirky dogs Bernie, Dimitri, and Tina.
Veterinary Assistant
Lesly is a Veterinary Assistant at Rancho West. She started with us as a Kennel Assistant while attending American College of Healthcare and Technology, where she has since received her Veterinary Assistant certificate. She has had a huge passion for animals since she was a child and specifically enjoys learning and educating people about commonly misunderstood breeds such as Pit Bulls and Rottweilers. She loves helping animals alongside her Rancho West teammates, who she feels played a big part in who she is today as a Veterinary Assistant. Lesly enjoys spending time with her pit bull, Mary Jane, her friends, and drawing.
Veterinary Assistant
Pamela is a Veterinary Assistant at Rancho West Animal Hospital. She attended Carrington College and graduated in 2016, soon after began her veterinary career at the Humane Society of San Bernadino. She joined the Rancho West team in 2023.Pamela has five dogs—Midas, Bear, Hutch, Duke, and Je. In her free time, she enjoys relaxing at home and watching anime and Korean dramas. A self-proclaimed foodie, she loves trying new restaurants and boba shops. Her ultimate goal is to travel and explore new places.
Veterinary Assistant
Ashai is a Veterinary Assistant at Rancho West Animal Hospital. She graduated from the American College of Healthcare Technology in 2024 with a degree in veterinary assisting. Ashai shares her home with four beloved dogs—Wednesday, Milo, Goldie, and Teddy. In her free time, she enjoys spending time with family and friends, baking, trying new restaurants, and exploring different parks with her dogs.
Receptionist
Julissa is a Receptionist at Rancho West Animal Hospital. Before joining our team, she worked at a grooming facility and has always had a passion for working with animals. At home, she has two dogs, Diesel and Rue, along with five cats—Binx, Bonnie, Clyde, Boomer, and Mavis. In her free time, Julissa enjoys spending time with her family, her sisters, and her pets. She also loves going to concerts, visiting the beach, and camping with her dogs.
Receptionist
Jennifer is a Receptionist at Rancho West. Jennifer graduated from Cal Poly San Luis Obispo with her Bachelor's Degree in Recreation Parks and Tourism Administration. She also volunteered and completed an internship with Zoo to You, a wildlife organization that helps teach and raise awareness about wildlife conservation. She would love to spend time traveling and visiting as many different countries as possible and would like to one day work as a Park Naturalist for the State Parks system. Her hobbies include hiking, observing wildlife, and visiting museums. Jennifer enjoys connecting with fellow pet owners and hearing our clients share their stories about their own pets.
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