Lizzie - HVS Mascot

Lizzie has been here at HVS since it's opening in 2012. She spends much of her time behind the receptionist counter when she is not out playing in the yard or at home with Dr. Ruisi. Lizzie was found abandoned in the desert shortly after being born. Fortunately, she  was found by a good Samaritan who immediately brought her in to Dr. Ruisi for care. The rest is history!



Cris has been in Wickenburg for three years and has lived most of her life in Arizona. The majority of her childhood  was spent in Cave Creek where she was surrounded by horses, dogs, cats, chickens, goats, and a variety of other critters. She has obtained degrees from Phoenix College and The University of Arizona.


Cris currently lives with a dog named Chevy and enjoys cross stitch, reading, watching movies, and going on road trips with her mother.

After retiring from a 22 year job, Maureen has enjoyed the opportunity to learn something new. She has been working and volunteering at HVS with her daughter, Dr. Ruisi. It is challenging, but she loves it!

About us...

Tristyn Turner - Veterinary Assistant

Tristyn was born in Channing, TX but moved out to Arizona as a child. in She is currently attending Wickenburg High School. She has a passion for animals and loves caring for them.  She lives with her family and two dogs, "Sophie" and "Thor".

Connie Callen - Kennel Assistant

Connie was born in California but moved to Arizona in the early 1970s. She served in the Army for three years. She currently lives in Yarnell with her three dogs. Working at Hassayampa Vet Services allows her to purse her passion of caring for animals. 

Barbara McKibbin, DVM Associate Veterniarian

Dr. Ruisi was raised in Wickenburg and the beautiful Arizona desert. Her passion for animals and love of the great outdoors lead her in the pursuit of a career in veterinary medicine. After serving 6 years of active duty in the U.S. Navy, traveling the world, and graduating from Washington State University - College of Veterinary Medicine, Dr. Ruisi returned home to Wickenburg in 2007. In 2012 she embarked on a new business venture to give back to the community and opened 'Hassayampa Veterinary Services'. Most days she can be found at the clinic with her dog "Lizzie". Dr. Ruisi was awarded the "Veterinarian of the Year" (2016) with recognition for Leadership and Professional Development by the VHCTAz/AzVMA. 

Jack Jenkins - Kennel Assistant

Jack moved to Wickenburg when he was nine and has lived here ever since. He worked at animal shelters for two years before joining the Hassayampa Veterinary Services team. He has always loved animals and enjoys caring for them. He would like to continue his education and pursue a career in animal care. 

Cris Ballard - Veterinary Assistant

Twilla grew up on cattle ranches in northern Nevada and Idaho. She graduated from Montana State University with a Bachelor’s of Science in Equine Science. She moved to Arizona shortly after graduating in 2006. Twilla worked for Idexx Laboratories for 7 years before coming to HVS. She loves animals but horses, particularly cow horses, are her passion. She lives in Congress, AZ with her husband, daughter, son, horses, dog, and cat.

Joanne Ruisi, DVM - Owner

Dr. Lara Shreve has recently joined Hassayampa Veterinary Service  (July 2017).  She is originally from Nebraska, but moved to Cottonwood, AZ when she was 12 years old.   After attending the U of A for her undergraduate studies, Lara relocated to Colorado where she graduated from Colorado State University College of Veterinary Medicine.  Following graduation, she completed an equine internship at Elgin Veterinary Hospital in Elgin, Texas -- just outside of Austin.   After her internship, she decided to stay on at  EVH and practiced there for the next 12 years.  Lara and her husband (an Arizona native), decided to return to Arizona so they could raise their son, Benjamin, closer to family.   In her free time, Lara and her husband enjoy listening to live music, hiking, fishing, camping,  horseback riding , and pretty much any other outdoor activity!!  They are also very happy to be able to spend more time with family and to explore the wide open spaces of Arizona.  We are very excited to have her join out team!!

Dr. Barbara McKibben grew up in central Minnesota where she was extensively involved in 4-H and FFA. She earned a bachelor's degree in animal science at the University of Minnesota before traveling to Arizona to attend veterinary school at Midwestern University. Following graduation, she completed an equine internship at Arizona Equine Medical and Surgical Centre. Barbara and her husband decided to move to Wickenburg to be closer to family and enjoy the small town life. She is an avid outdoor person who enjoys riding her horses, playing with her dogs, hiking, camping and kayaking among other activities. 

Twilla Keefe  - Practice Manager

The Doctors...

Stacy Hershkowitz - Receptionist

Stacy is an Arizona native, born in Phoenix, but eventually landed in Wickenburg. She worked for an animal shelter prior to coming to HVS. She has two cats and a dog named John Wayne. In her spare time she enjoys riding bikes and hiking. 

The Staff...

Dr. McKibbin will be joining us in July 2019. We are looking forward to having her on the team!!

Lara Shreve, DVM - Associate Veterniarian

Maureen Ruisi - Receptionist

Wilford Lacey- Kennel Assistant

Arizona native born in Wickenburg and currently living in Morristown. I was a dog groomer prior to working for HVS. I have 2 dogs Ripley and Ginger and when not busy working I love getting outdoors to hike and visit new places. I also have an extreme love of photography.