About Us

Dr. Allen Hallada

Practice Owner/Veterinarian

Dr. Hallada grew up in rural Wisconsin.  He was a biochemistry major at the UW-River Falls and recipient of the 3M Research award.  He completed his doctorate work at UW-Madison School of Veterinary Medicine where he received the annual award for Proficiency in Small Animal Surgery.

Dr. Hallada was a partner in a multi-doctor mixed animal practice in Winona, MN where he worked on a variety of different animals including exotic large animals such as zebras and reindeer.  He worked for the US Fish and Wildlife Service studying migration patterns of Paddlefish and Sturgeon.

Following his dreams to live in the mountains and do public speaking, he moved to Sun Valley, ID where he lived for the next 7 years.  He spoke throughout the country on delivering outstanding customer service and effective communication in the workplace.  He was also a veterinarian to many celebrities that lived in the area.

Dr. Hallada purchased Mesa Veterinary Hospital in August of 2003.  After performing major equipment upgrades he is finally achieving what he originally set out to do from the time he graduated from veterinary school, to provide a level of veterinary service to companion animals that we humans have.  He continues to perform surgeries, dentistry, and is a strong advocate of wellness in pets.  He is an Elite speaker for Pfizer Animal Health and teaches other veterinarians how to perform safe and effective anesthesia and pain management in pets.

Away from work, Dr. Hallada enjoys downhill skiing, golfing, and biking.

Dr. Ley


Practice Manager
SallyAnn is from Southern California where she began working in the Veterinary field in 2000. 
Sally moved to our  Beautiful Central Coast about 5 years and has worked with some of local Doctors in our area as well as our local Emergency Hospital. Sally is always working  behind the scenes of our hospital keeping the practice flowing with the great team they have. She is always available at any time of the day for our clients. Her number one priority is care and quality of Veterinary Medicine 

Jenny Fuentes

Front Office Asst. 
Jenny has worked with Dr. Hallada since 2008. She did take a break for a while to become a parent for the first time but returned to work for us once more. You can always expect to see a compassionate loving client liaison when you walk into our Hospital. Her goal is to make our clients feel as comfortable and at ease when their four legged family members need care. 
Jenny is always at our front desk greeting everyone that walks thru our front door. On her spare time Jenny enjoys watching football and spending time with her family.

Jessica Wagner

Vet Assistant 
Jessica joined the Mesa Veterinary Team in June of 2012. She was raised in Northern California before moving to San Luis Obispo to attend Cal Poly. Jessica received her Bachelor's degree in Animal Science with concentrations in both Equine Science and Reproductive Physiology in March of 2011.  She chose to stay on the central coast to continue gaining knowledge in fields of reproductive physiology and veterinary medicine. Jessica plans to pursue her Master's degree in Reproductive Physiology in the future. In her free time, she enjoys spending time with her sister and friends, hiking, swimming, going to the beach and Blues baseball games.

Brooke Reasner

Vet Assistant Brooke is a local from the Central Coast of California. She is our newest team member to join our practice this year. She comes to us from large animal experience. Brooke is on the path to becoming a Registered Veterinary Technician and is enrolled in the Hancock RVT program. She is a kind compassionate warm loving young lady who brings joy in helping our patients
get the best care possible. She has two Queensland Heelers that she adores and a Thorough Breed Mare. We are please to have such a talented young lady be part of our family. 
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