Equine Health Technicians

Compassionate and High Quality Care

Kendra Foley

Kendra has been working at Pioneer Equine Hospital since January 2001. She is the MRI and CT technologist. Outside of work, she can be found riding her bike, playing with her dogs, or spending time with family.

Jennifer Mikkelson RVT
Technician Team Leader

Jennifer was born and raised in Clayton, CA on a small ranch. Growing up she had a multitude of animals, including horses, and from an early age knew she wanted to work in animal medicine. Jennifer pursued her dream and graduated from Carrington College in February 2016 with an Associate’s Degree in Veterinary Technology. In April of 2016, Jennifer joined the Pioneer team and has loved it since. Jennifer received her Registered Veterinary Technician’s license in 2017. When not at work, you can find Jennifer riding her horse, Sarah, hanging out with her friends and playing with her dogs, Bonnie and Clyde.

Karen Shadle
Patient Care

Karen Shadle has been working at Pioneer since 2004. She is currently one of our night technicians, providing the best patient care to those horses who are hospitalized overnight or over several days. Karen graduated from Carrington College in 2017 with her Associates Degree in Veterinary Technology.

Amanda Wiersma
Patient Care

Amanda has been working at Pioneer since June 2017 and she enjoys all aspects of being an equine health technician. Amanda grew up in Oakdale doing junior and high school rodeo, she now resides in Turlock with her husband and two kids. Together they have nine horses and team rope.

Melissa Tanzillo
Ambulatory Patient Care

Melissa started working for pioneer in the winter of 2018. She was born and raised in Castro Valley, Ca where she grew up riding hunter/ jumpers. Aside from working with horses she worked at a wild life rehabilitation center. However, she decided to pursue her interests in criminal justice and received her bachelor’s from Sacramento state. When she isn’t working, Melissa enjoys hunting and fishing.

Kristine Ferreira

Kristine started riding when she was three years old. She competed heavily as a young girl in junior hunter/jumper classes. Now Kristine teaches English riding lessons. Kristine previously worked at Pioneer from 2001-2004 and she is happy to be back as part of the reproductive team. Before starting back at Pioneer, Kristine worked at a Thoroughbred farm for a number of years doing sale prep and training. Kristine and her husband, David, have two kids, Adrienne and Gage. At home, they enjoy riding together and caring for their cattle.

Brittany Bess
Patient Care

Brittany started her experience at Pioneer Equine Hospital while taking a work experience class in spring of 2018. She has been an employee here since September 2018. Brittany was an Animal Science Major at Modesto Junior College and her goal was to become an equine veterinarian but, she is now going to school to become a Registered Nurse. Brittany enjoys being an equine health technician and all of the experiences and challenges she encounters. In her free time Brittany likes to spend time with her dog Koda, teach FFA/4H kids about sheep showmanship, and she loves to go to Oakland A’s games with her boyfriend and family.

Alyssa Costa
Equine Technician

Alyssa started working at Pioneer Equine Hospital in the spring of 2019. She has a passion for horses and has been around them since she was a kid. She has an Associate’s degree in Animal Science and Agricultural Business, and is currently taking classes to become a Registered Veterinary Technician. She enjoys all aspects of being an equine health technician, and takes a special interest in emergency medicine and patient care. Outside of Pioneer, you can find her riding her horses, reading, or spending time with her family. She resides in La Grange with her husband, her two kids, and her dogs.

Kaleena Smith
Patient Care

Kaleena was born and raised in the Central Valley. While attending Oakdale High School she was part of the rodeo team, which is where her love for the equine industry grew. After high school, she attended Modesto Junior College and earned two Associate Degrees, one in Agriculture Business and another in Veterinary Technology. She started working at Pioneer in the fall of 2019. Outside of work she enjoys playing with her dogs and hanging out with her family.

Lisa Hayes
Patient Care

Lisa enjoys working part time at Pioneer with her coworkers and the horses.


Outside of Pioneer she enjoys, spending time with her family and friends, food, wine and traveling, hiking and hanging with her dog, Wylie.

Oscar Garcia
Equine Technician

Bio coming soon!

Kylee Sisco
Patient Care

Kylee was raised in Knights Ferry for the elementary years of her life where she began her horse experience. She was raised around an abundance of different animals including horses. She started riding at an early age and enjoyed doing things like going to small jackpots, 4H gymkhanas, and trail riding. She attended Oakdale High School and graduated in 2018. She started her journey with Pioneer in the winter of 2019 during a work experience program. She is currently enrolled in Modesto Junior College where she took most of her Large Animal Veterinary Technician classes. She is applying to Fresno State in the Fall of 2020 to transfer with her AS degree in Agriculture Science where she later hopes to earn her High School Agriculture teaching certification. When she’s not at work or doing homework she loves to ride her horses along the lake access around her house or take them camping. She loves to hang out with her friends and sister on the lake during the summer months and she also enjoys raising show lambs for 4H kids.

Pablo Villanueva
Equine Technician

Bio coming soon!