Our Veterinarians

Dr. Barrera, DVM

Medical Director

Dr. Barrera was born and raised along the Southern California coast. Like many her age, she’s wanted to work with animals since the fourth grade. She ventured back East for her undergraduate degree in Animal Sciences at Cornell University in 2007, then returned to California to earn her Veterinary degree from UC Davis in 2011, with an emphasis on large animal medicine. After one year in Manitoba, Canada, working cow-calf operations, she returned home to California to practice small/companion animal medicine, until she moved to the great state of Texas. Dr. Barrera loves traveling, is very involved with her local church, and enjoys spending her time with her husband, three children, Labrador retriever “Penny”, and two cats “Reggie” and “Marlo”.

Fun Fact: She is a classically trained pianist since the age of 8.

Quote: “Worry does not empty tomorrow of its sorrow; it empties today of its strength.” – Corrie Ten Boom

Dr. Gibson, DVM


A native of Austin Texas, Dr. Kathryn Gibson is a General Practitioner of Comal Pet Hospital.

Dr. Gibson credits her parents with having encouraged her to follow her childhood dream of becoming a veterinarian. Now that she is a veterinarian, she says that all of the hard work is made worthwhile by the pleasure she derives in helping clients ensure their pets lead long and healthy lives.

After graduating high school in Austin, Dr. Gibson entered Southwestern University in Georgetown, Texas, where she earned a Bachelor of Science in Biology in 2000. During her undergraduate studies, Dr. Gibson was a member of the college’s women’s basketball team and the Delta Delta Delta social sorority.

In 2003, Dr. Gibson enrolled in Texas A& M University’s College of Veterinary Medicine. She received her Doctorate of Veterinary Medicine in 2007. Her area of particular professional interest is dentistry and she is a member of the American Veterinary Medical Association and the Texas Veterinary Medical Association.

Dr. Gibson and her husband David are the proud parents of two daughters. Their animal family consists of two Rhodesian Ridgebacks (April and Ragnar) and 4 cats (Ike, Peanut, Froyo and Princess Kate). Her interests include traveling, reading, enjoying the outdoors, and playing basketball.

Dr. Heath, DVM

Associate Veterinarian

Dr. Sarah Heath is an esteemed veterinarian hailing Kansas State University (KSU). With a passion for animal welfare and a dedication to advancing veterinary medicine, Dr. Heath has made significant contributions to the field throughout her career.

After graduating with her Doctor of Veterinary Medicine (DVM) degree, Dr. Heath embarked on a journey to expand her knowledge and expertise, starting with a career in large animal medicine all the way to small animal ER.

Dr. Heath’s dedication to her profession extends beyond her work in small animal practice. She is an active member of numerous professional organizations, she regularly attends conferences and seminars to stay abreast of the latest advancements in veterinary medicine, ensuring that she provides the best possible care to her patients.

Dr. Sarah Heath is not only a skilled veterinarian but also deeply values the importance of the human-animal bond. She recognizes that fostering a strong bond between pet owners and their furry companions is crucial for the overall well-being and happiness of both parties involved.

As an educator, Dr. Heath goes beyond diagnosing and treating animals. She takes the time to educate her clients, ensuring they have a comprehensive understanding of their pet’s health needs, preventive care, and any necessary treatments or procedures. By providing this knowledge, she empowers pet owners to actively participate in their pets’ care and make informed decisions.

Dr. Heath believes that when pet owners are well-informed, they can better recognize subtle changes in their pets’ behavior or health, leading to early detection of potential issues. This proactive approach can significantly improve the outcomes of veterinary interventions and ultimately enhance the quality of life for animals under her care.

Outside of her professional endeavors, Dr. Sarah Heath enjoys spending time with her church community and her beloved cats.

Dr. Cruz, DVM

Associate Veterinarian

Dr. Cruz attended Texas A&M University for both undergrad and veterinary school. He graduated in 2019 with a Bachelors of Animal Science and in 2023 as a Doctor of Veterinary Medicine.

Dr. Cruz’s favorite thing about being a veterinarian is getting to see both his patients and clients grow as individuals. He finds it especially rewarding to follow a patient throughout their entire lives from their first puppy vaccinations to senior wellness visits. Dr. Cruz favorite parts of medicine are reproduction and surgery, and he hopes to be able to aid his future clients in practicing responsible breeding.

While not in the hospital caring for your furry friends, Dr. Cruz enjoys raising show livestock with his family, cooking, watching movies, and spending time with friends.

Dr. Cruz’s family has a Treeing Walker Coonhound (Gypsy), a Seal Point Siamese cat (Sammy), and a growing showpig operation.

Dr. Cruz is excited to get started at Comal Pet Hospital and looks forward to becoming a part of his new patient’s and client’s lives.


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