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Aztec Pet Hospital

Aztec Pet Hospital is a  veterinary medical facility, located in Harker Heights, TX. The professional and courteous staff at Aztec Pet Hospital seeks to provide the best possible medical care and dental care for their highly-valued patients. 

We are committed to promoting responsible pet ownership, preventative health care and health-related educational opportunities for our clients. Aztec Pet Hospital strives to offer excellence in veterinary care to Harker Heights and surrounding areas. 

Please take a moment to contact us today, to learn more about our veterinary practice and to find out more information about how Aztec Pet Hospital can serve the needs of you and your cherished pet.

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John's Staff Spotlight Photo Dec 2019_ed



  Dr. John H. Kuczek takes great pride in being a Killeen native and he returned to the area after graduating  from Texas Tech and Texas A&M College of Veterinary Medicine. He established a mobile large animal practice that he operated for 7 years.

   Wanting to broaden his experience he accepted a position on Fort Hood and spent 7 years as the veterinarian for the First Calvary Horse Detachment, the Fort Hood Veterinary Treatment Facility and for the Military Working Dogs.

  On 16 April 2016, Dr. Kuczek and his wife, Emily, assumed ownership of Aztec Pet Hospital. Dr. Kuczek immediately expanded services to include a wide range of surgeries and dental procedures. He is very passionate about internal medicine and critical care. He seeks out educational opportunities as well as investing in the latest technology to ensure our clients receive the highest quality of medicine possible right here at Aztec with the Doctors they know and trust.

   Dr. Kuczek enjoys driving his vintage tractor with his three sons. He also spends his free time fishing, cooking, watching science fiction movies, and he attempts to shorten the "honey-do" list at home.

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   We are excited to welcome

Dr. Rachel Sims to our Aztec


   A self described "military brat," Dr. Sims considers Texas home as she spent the most time here.


   Dr. Sims attended Texas Tech University where she earned a Bachelor of Science degree in Animal Science in 2012 and a Masters in Microbiology in 2015. She was a vet assistant for 4 years prior to attending Midwestern University in Arizona where she earned her Doctorate of Veterinary Medicine in May.

   She is looking forward to working in the "fun environment" at Aztec, seeing new cases and learning new things every day.

   She has a Chow named Ace and two cats, Ribeye and Nemo.

She enjoys spending time with her parents and pets as well as reading, crochet, gaming, glass blowing, hiking, watching anime

and working puzzles.

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​Dr. Danielle Vaden Anderson, or Dr. Vaden for short, joined our team June 2022.  Dr. Vaden is from Silsbee, Texas, a small town in South East Texas. Ever since the wee age of 7 years old, she knew she wanted to be a veterinarian.


She is a first generation student and completed her undergraduate studies at Texas A&M University graduating with a Bachelor’s in Animal Science with a focus in Equine Science.

After a life-changing trip to South Africa in 2017 working in Conservation and Wildlife Medicine, her eyes
were broadened to the concept of One Health and its effect on the human-animal bond. With this in
mind, she graduated from Texas A&M University with her Doctor of Veterinary Medicine in May 2022 with the intent to practice companion animal medicine and eventual pursuit of her Master’s in Public Health (MPH).


She is so eager to work with such a dynamic and unique team at Aztec Pet Hospital and is
ecstatic to start serving this community!

She has an Australian Shepherd/Australian Cattle dog mix named Mogily and an Australian Cattle
dog/Catahoula mix named Harley (Oy vey, all the herding breeds).

Outside of work, she enjoys spending time with her pets and partner as well as being outdoors, kayaking, horseback riding, watching Aggie sports, traveling and binging her favorite TV shows.

Welcome Dr. Vaden.


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   We are very happy to introduce

Dr. Stephanie Cabral DVM who joined our Aztec team November 30, 2020.

  Dr. Cabral is from Coupland, a small country town about an hour South of Temple. She did her undergraduate studies at Tarleton State University, graduating in 2007. She received her Doctorate in Veterinary Medicine from Texas A&M in 2012.

  She worked near Houston before moving to central Texas where she has been working for the last 7.5 years. When asked what she enjoys about being a veterinarian, Dr. Cabral said, "I love the joy and challenges that vetmed brings. I get to combine some of my favorite things all in one. Animals, medicine, solving puzzles and helping others." Dr. Cabral also enjoys working with a variety of exotic pets. She will be the only vet at Aztec to treat exotic pets so please call and set up an appointment to make sure she is available.

  Dr. Cabral and her husband have a 3 year old son and will welcome another baby boy in April of 2021. They own two rescue dogs. A 10 year old pit mix named Addy and a 1.5 year old bull terrier mix named Chance. They also have a 105 pound Sulcata Tortoise named Thunder.


  When they are not working the family enjoys being outside. Favorite activities include camping and traveling.




  Dr. Keegan is a familiar face as he joined Aztec in May of 2020 as a relief vet and has worked with us at various times. We are very pleased to welcome him full time to our team.


Dr. Keegan was born in Bulgaria in Southern Europe. After moving to the U.S. he lived in Minnesota and Colorado before moving to Texas 9 years ago.


He earned his Doctor of Veterinary Medicine in 1995 from Trakia University, Faculty of Veterinary Medicine - Bulgaria.


Dr. Keegan began his career as a large animal vet and had owned a mixed veterinary practice. He also held a position as Head of Bacteriological lab for 5 years. After his move to the U.S. he taught Veterinary Technology at two colleges in both Minnesota and Texas. The last 12 years he has worked exclusively with small animals, dogs and cats.


His grandparents owned a small farm and he grew up around multiple kinds of animals so it felt natural to him to become a veterinarian. When asked what he liked about his work as a vet Dr. Keegan responded, "Trying to help those that cannot speak for themselves has always been the essence of my profession."


Dr. Keegan and his wife have been together over 29 years and have one grown son. They share their home with "one small and naughty bird," named Mr. Davy



A long time fan of rock music and an avid gym goer, Dr. Keegan also enjoys fishing and spending time outdoors.

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