Dr. Sean Penn

Veterinarian and Medical Director

Hello, everyone. I'm Doctor Penn, and I'd like to share with you how I became a veterinarian and what led me down this path.

Dr. Wendy Patterson


Before becoming a veterinarian, Dr. Wendy Patterson spent almost 20 years working in the fields of human resources and business management. During that same period, she also owned an Arabian horse farm and bred and showed her horses.

Dr. Emily Ozmun


Dr. Emily Ozmun grew up here in Phoenix, AZ. At a very young age, she had a passion for medicine, and knew veterinary medicine was for her!



Hospital Administrator, CVT

Jennifer, CVT is the Hospital Administrator. She was born and raised in Phoenix, Arizona.


Office Manager, MBA

Tammy joined Horizon Animal Hospital in 2016 as the hospital manager. She was born and raised in New York and loves the NY Yankees! She has been a licensed veterinary technician since 1994.


Hospitality Director

Maple came to us from California in 2018. She was rescued from an unsuitable breeding situation, and Horizon turned her Into our Hospitality Director. She has not disappointed us with her mad job skills and continues to make people happy.

Veterinary Technicians


Certified Veterinary Technician

Andrea has been a part of the Horizon AH team since 2008 (first as a boarding attendant, then technician assistant, and finally a certified licensed vet tech) during which she went to school and received her CVT license in 2011.


Certified Veterinary Technician

Shea was born and raised in Mesa, Arizona. While Shea was in high school she attended the East Valley Institute of Technology for her veterinary assistant certificate.


Veterinary Technician

Barb is originally from Southern New Jersey and moved out west to Arizona in 2020 to be closer to her sister, brother-in-law and nieces. Her two teenage nieces are her pride and joy.


Veterinary Technician

Kavita moved from the suburbs of Chicago to AZ in 2018 to attend ASU for her undergraduate degree in Biological Sciences. After graduating, she has devoted her time to working at Horizon Animal Hospital as a veterinary technician and hopes to attend vet school in the near future!

Support Staff


Client Relations

Joann has been in the Veterinary field for many years. She started her career in the veterinary industry in Ohio as an assistant. She then moved to Michigan where she worked as a veterinary receptionist and as a veterinary technician.


Client Relations

Audrey was born and raised in Kalispell, Montana. She moved to Arizona in April of 2022 and couldn’t be happier! She has a Corgi mix named Azul and is her best friend! When she is not working love being outside and swimming.

Boarding and Grooming


Boarding Attendant

Katie has lived in Arizona since 2011. During her free time, she enjoys swimming and hiking. Katie and her boyfriend share the love of their two dogs Marco and Bones.


Boarding Attendant

Nikki is originally from Cave Creek, AZ. Her best friend in the world is Dickie Birdie, a 12-year-old chihuahua, whom she adopted when she ran a small rescue years ago. Nikki has a total of six dogs and a cat.



Karen grew up in Dayton, Ohio with a family that loved all kinds of animals from dogs, cats, and rabbits to birds. The joy from early childhood helped her discover her passion for pets, which has led her to a dream career of dog grooming for over 40 years.