About Us

Huebner Oaks Veterinary Hospital in San Antonio, Texas

At Huebner Oaks Veterinary Hospital, we believe in providing all the care your pet needs in one convenient location. Our experienced staff is passionate about delivering high-quality services and building relationships with every patient and owner. Whether it’s a routine wellness exam or urgent care during an emergency, we provide top-notch care and service at every opportunity.


Our Team!

Meet our team

Marc Zieben

Partner and Medical Director

Dr. Marc Zieben grew up in Houston, Texas. After attending Texas A&M University, (home of the fightin’ Texas Aggies), he received a Bachelor of Science degree in Biomedical Science in 1980. He received a veterinary science degree in 1982 and then earned his doctor of veterinary medicine degree in 1984. His future employer and mentor, Dr. Gerald Parker, Texas A&M class of ‘43, helped Dr. Zieben get started at Colonies North Animal Hospital. In 1990, Dr. Zieben and his wife, Morna, purchased the practice from Dr. Parker, and in 2001, Dr. Zieben moved his practice to Vance Jackson, renaming it Huebner Oaks Veterinary Hospital.

Dr. Zieben is happily married to his wife, Morna Zieben, and they have two wonderful children, Jacob and Sarah. They also have a labrador retriever, “Max,” four cats (“Nike,” “Crystal,” “Fritz” and “Jack”), as well as “Sydney,” a ball python snake. Oh, and let’s not forget “Fred,” their African spurred tortoise. In his spare time, Dr. Zeiben enjoys spending time with his family, practicing martial arts, scuba diving, kayaking, reading, salt water fishing, and hiking.

He is a member of the Bexar County Veterinary Medical Association, Texas Veterinary Medical Association and American Veterinary Medical Association. His veterinary interests include internal medicine, soft tissue surgery, ultrasound, and endoscopy.

Dr. Zieben

Dr. Leckie


Dr. Leckie graduated from Texas A&M University College of Veterinary Medicine in 2009 with her Doctorate of Veterinary Medicine (DVM). That same year, she married her college sweetheart, Daniel. They live with 2 human children, Connor, and Lucas, 2 dogs, Ella Belle and Rivet, and one diabetic rescue cat, Phoenix. Dr. Leckie's veterinary interests include dermatology, pain management, and internal medicine. Dr. Leckie joined the Huebner Oaks Family in March 2014.

Dr. Leckie

Crystal Negrete

Practice Manager

I have been in the Veterinary field since 2004. I joined the Huebner Oaks team as a receptionist in 2010. In my time here I have learned and grown so much. After a few years I was promoted to lead receptionist, in 2018 I was promoted to clinic Administrator and back in August of 2019 I became the practice Manager. I am very passionate about helping animals, communicating with clients, building relationships with clients.and maintaining a healthy work environment. I feel very lucky to be working in the field. I can't imagine working anywhere else. I'm married to my highschool sweetheart. He's a vet tech and loves helping animals just as much as I do. We have two children (Judith and Alice) & four pets (a pitbull mix named Aiden, a papillon mix named Autumn and 2 cats named Sardine and Ethel).On my time away from work I love spending time with loved ones, volunteering in the community and I enjoy hiking.


Veterinary Services, Pet Grooming & Boarding in San Antonio

By providing veterinary services, grooming, and boarding in one location, we get to know your pet’s personality, quirks, and lifestyle, which allows us to pick up on hidden illnesses more quickly and administer prompt treatment. With a deeper bond and stronger relationship, you can rest assured your beloved companion will receive only the best of care here at Huebner Oaks Veterinary Hospital. We’d be delighted to care for all of your pet’s needs in San Antonio—just give us a call to schedule an appointment.

Smiling golden retriever laying in grass.