Valrico Animal Clinic Staff

At Valrico Animal Clinic, we strive for a warm and friendly relationship with you and your pet. This page highlights the staff – our training, experience and dedication to veterinary medicine.


David Thomassy, DVM Dr. David Thomassy is the co-owner of Valrico Animal Clinic, with his wife Dr. Lorie Thomassy. They are the parents of 3 children and have dedicated their lives to Veterinary Medicine. He is a 1997 graduate of the Auburn University, College of Veterinary Medicine, and received his Bachelor of Science in Zoology from Auburn University in 1993. Dr. Thomassy is skilled in providing complete medical and surgical care for dog, cats, and a wide variety of avian and exotic animals. He has special interests and skills in exotic animals and surgery (including orthopedic surgery, abdominal surgery, tumor removal, dentistry, and other non-traditional procedures). He is a member of the American Veterinary Medical Association, the American Animal Hospital Association, the Florida Veterinary Medical Association, the Association of Avian Veterinarians, and the Association of Reptile and Amphibian Veterinarians.
Lorie Thomassy, DVM Dr. Lorie Padgett-Thomassy is the co-owner of Valrico Animal Clinic, with her husband Dr. David Thomassy. She is a busy parent and mother of their 3 children. She is a 1992 graduate of the University of Florida, College of Veterinary Medicine, and received her Bachelor of Science in Biology from the University of South Florida. Dr. Lorie has a great love of animals and years of experience caring for dogs, cats, and exotics. She has special interest and expertise in Oncology, with experience working in the Oncology Department at Florida Veterinary Specialists (now Blue Pearl Veterinary Partners), our local referral hospital. She is currently not seeing patients, but stays involved in the daily operation of the practice.
Yvonne Mercak, DVM Dr. Yvonne Mercak is a 2010 graduate of the University of Florida College of Veterinary Medicine. She has a special interest in surgery and challenging medical cases. In her time off she enjoys outdoor activities, working out, cooking and spending time with her family. Dr Mercak is the daughter of the original owner Of Valrico Animal Clinic, Dr Andrew Mercak. We are so excited to welcome her home!
Nicole Jimenez, DVM Dr Jimenez is a 2014 graduate of the University of Tennessee College of Veterinary Medicine. She joined our practice in June 2015 and has experience with dog, cat, avian, exotic and aquatic medicine. In her spare time Dr Jimenez enjoys reading, movies and trips to Universal Studios and Disney with her husband, Andrew.

(813) 681-6389

Call us to discuss your pets needs.
We look forward to building a long relationship with you and your animal companion!

Practice Manager


Christine has been a Licensed Veterinary Technician since 1978. She joined our team after relocating from New York with her family in 1995. She and her husband Joe share their home with dogs, Faith and Nell, cats, Jose and Monkey, and a pond full of very friendly Koi fish. In her spare time Christine likes gardening, cooking and traveling.

Human Resources Manager




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Missy has been involved in veterinary medicine since 2004, working as both a receptionist and veterinary technician.She has a special love for cats and feels it is very rewarding to be able to care and advocate for the animals entrusted to her. Missy is owned by two cats, Malachi and Little. She also shares her home with Chaco, a golden knee tarantula. In her spare time Missy enjoys reading and exploring the outdoors.
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Brianna - Kennel Supervisor
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