Our Doctors

John Yselonia, DVM

Dr. Yselonia attended the University of Georgia (UGA) where he was awarded a Bachelor’s degree in Exercise and Sports Sciences followed by a Doctorate degree in Veterinary Medicine. During his undergraduate education, Dr. Yselonia was a member of the UGA baseball team where he served as the team captain. He also earned MVP honors, as well as the Most Competitive Award, and the Scholar-Athlete Award. Dr. Yselonia was drafted by the Pittsburgh Pirates in 1993 and played baseball in the minor leagues.

Dr. Yselonia interned at North Florida Veterinary Specialists in Orange Park where he learned from world-renowned surgeon Rob Goring, DVM. He also interned at the West Ashley Veterinary Hospital in Charleston, SC.

Upon graduation from veterinary school in 2000, Dr. Yselonia joined Dr. Searcy at Antigua Veterinary Practice. Dr. Yselonia enjoys the challenge of veterinary medicine. He takes pride in staying on the cutting edge with continuing education. His special interests include internal medicine, surgery, and dermatology. Dr. Yselonia was also a founding partner of the St. Augustine Regional Veterinary Emergency Center.

Dr. Yselonia met his wife Kim at the University of Georgia and they have been married since 1996.They have two children, Blake who attends Auburn University & Kaylee who attends the University of Georgia. His pets include 2 dogs, Chewy (Yorkie) & Sanford (Black Labrador) and 2 cats, Tripi & Willow. Dr. Yselonia’s outside interests include golf, coaching, watching sports and giving back to the community. He has volunteered with the St. Augustine Little League, St. Johns County Police Athletic League, Ancient City Pirates, and St. Augustine High School Baseball Boosters amongst others.

Katy Taggart, DVM

Katy Taggart was born and raised in Jacksonville, where she graduated from Bishop Kenny High School. She is very excited to be living in the St. Augustine community and joining the fantastic team at Antigua Veterinary Practice! Katy attended the University of Florida for her bachelor’s degree in Animal Science and Entrepreneurship. She graduated with honors from the University of Florida College of Veterinary Medicine with a certificate in Veterinary Business Management.

While in veterinary school, Katy conducted a research study on a genetic mutation causing cardiac disease in Doberman pinschers resulting in two publications. She presented her research at the American College of Veterinary Internal Medicine (ACVIM) conference in Seattle and at Texas A&M College of Veterinary Medicine.

While in Gainesville, Katy enjoyed playing intramural soccer, running nature trails, and cheering all Gator’s sports teams. In addition, she enjoyed volunteering for Operation Catnip, Children’s Miracle Network at Shand’s Hospital, and the Girl’s Club of Gainesville.

One of Katy’s favorite places in town is the St. Augustine Amphitheatre, where she had her first date with her music-loving husband, Nathan. Katy currently has a Siamese cat named Sylvester, who she rescued as an injured kitten from the UF Dairy Farm. Katy’s favorite aspect of veterinary medicine is helping to foster the bond between people and their beloved pets!

Garrett Mock, DVM

Dr. Garrett Mock was born here is St. Augustine, FL and was raised in the small town of Ridgeland, SC. He graduated from Clemson University in 2017 with a Bachelor degree in Animal and Veterinary Sciences. He attended veterinary school at St. George’s University in Grenada, West Indies. He completed his final year of clinical training at the University of Florida in Gainesville.

Dr. Mock began dating his wife Ashley in high school, they attended college together at Clemson and were married in 2014. Their pets include 2 dogs, Cookie and Indie, and a bearded dragon named Sully. Dr. Mock enjoys hunting, fishing, the outdoors and spending time with his family.

Visit Our Office

195 San Marco Ave
St. Augustine, FL 32084
904.824.1414 [tel.]
doctors@antiguavet.com [email]

Monday – Friday:
8:00 am to 5:30 pm
8:00 am to 12:00 pm