Welcome to Our Vista Animal Hospital! Our experienced veterinary care team is excited to welcome you and your pet into our animal care family.


Mona King, DVM

Dr. Mona Nicole King received her Bachelor’s Degree from California Polytechnic State University, San Luis Obispo and her DVM degree from Western University of Health Sciences. As an undergraduate she participated in Polo, Thoroughbred, Swine, and Leopard Tortoise enterprises, and sang in the choir at her church. In veterinary school her passion for horses continued and she showed competitively in the Arabian Horse Circuit. Some of her most rewarding experiences included shelter work and providing veterinary services for people who could not otherwise afford veterinary care. She performed countless examinations, spays and neuters while working with World Vets in Nicaragua. During vet school Dr. King married her high school sweetheart and they now reside in Carlsbad with their fur children – Scout, a Belgian Malinois Mix, Oliver, a Toy Australian Shepherd, Chia Pet, a Sphynx, and Safari, a Savannah Cat. They enjoy hiking, the dog beach, and training for sheep herding. Other favorite activities include riding horses, kitty snuggles, paddle boarding, hiking, water sports, yoga, and reading.

Dr. King’s favorite aspects of veterinary medicine are communicating with clients. She strives to make that vital connection with every person that walks into the hospital door through patience, empathy, and kindness –that is her personal goal during each and every appointment.


Kateryna Naderi, VMD


Dr. Kateryna Naderi comes to Mohnacky Animal Hospitals with over ten years of clinical experience. She’s supported laboratory research at her alma mater the University of Pennsylvania, served as a veterinarian in the U.S. Army (retired with the rank of Major), and practiced as an Associate Veterinarian in small animal practices across the states of Pennsylvania, New Mexico, Texas, and California. Her time in the Army deepened her understanding of the human animal bond, something she works tirelessly to preserve and nurture on a daily basis, while her life with her also-veterinarian husband keeps her grounded. Dr. Naderi’s professional interests include preventive medicine, public health, and soft tissue surgery. When not at work she enjoys spending time with her husband, gardening, road cycling, camping, and traveling.


Leah Stalker, RVT


Leah Stalker is Executive Director and RVT for MAHV. Leah was born and raised in San Diego and currently resides in beautiful Fallbrook. Leah began working in animal nutrition in 2004 before moving to Iwakuni, Japan with her husband. While there, Leah took a job with the US Army Veterinary Corps treating military working dogs. In 2011 her family moved back stateside and she worked in a busy exotic practice caring for everything from birds to snakes to goats. Leah also worked with a traveling orthopedic surgeon and veterinary practices of all sizes, while providing relief services to hospitals in both San Diego and Riverside County.

Leah has a passion for riding horses and has been doing so since the age of two. She has traveled to nine countries and looks forward to seeing the world. In her spare time Leah enjoys interior decorating, riding, hanging outside with her chickens and standard poodle “Daphne” as well as spending her time with her daughter and husband.