Our Veterinarians

Frank Bettencourt
DVM
Emergency Medicine
Frank Bettencourt
DVM
Emergency Medicine
Servicing Locations
  • Doctor of Veterinary Medicine, University of Illinois, Urbana
  • Internship, Small Animal Medicine & Surgery, University of Illinois, Urbana
  • Bachelor of Arts, Biology, University of Southern Maine, Portland
Bradley Book
DVM, DACVECC
Critical Care
Bradley Book
DVM, DACVECC
Board Certified in Veterinary Emergency & Critical Care
Critical Care
Servicing Locations
Dr. Bradley Book enjoys all aspects of emergency medicine.
  • Diplomate, American College of Veterinary Emergency & Critical Care
  • Residency, Emergency & Critical Care, South Texas Veterinary Specialists, San Antonio
  • Internship, Small Animal Medicine & Surgery, Animal Medical Center, New York City
  • Doctor of Veterinary Medicine, Texas A&M University, College Station
Dr. Book spends his free time with his two children and their pets, golden retriever Trout, and cat Rover.
Meredith Esterline
DVM, MS, DACVS-SA
Surgery
Meredith Esterline
DVM, MS, DACVS-SA
Board Certified in Veterinary Surgery-Small Animal
Surgery
Servicing Locations
Dr. Meredith Esterline’s particular interests include thoracic, neurological, soft tissue and fracture repair surgeries.
  • Diplomate, American College of Veterinary Surgeons-Small Animal
  • Residency, Small Animal Surgery, Kansas State University, Manhattan Internship, Surgery, University of Tennessee, Knoxville
  • Internship, Small Animal Medicine & Surgery, Garden State Veterinary Specialists, Tinton Falls NJ
  • Master of Science, Texas A&M, College Station
  • Doctor of Veterinary Medicine, Texas A&M, College Station
Dr. Esterline volunteers her time as a Girl Scout leader and Faith Formation instructor. Her favorite pastimes include refinishing furniture, stained glass and spending time with her family.
James Giles
DVM, MS, DACVS-SA
Surgery
James Giles
DVM, MS, DACVS-SA
Board Certified in Veterinary Surgery-Small Animal
Surgery
Servicing Locations
A retired U.S. Army lieutenant colonel, Dr. James Giles enjoys arthroscopy and laparoscopy and is particularly interested in orthopedic and neurologic conditions in working dogs, especially surgical management of degenerative lumbosacral stenosis. While serving as a military veterinary surgeon, he became experienced in performing endodontic repairs and advanced dentistry. He also introduced the use of negative pressure wound therapy for use in military working dogs and treated the first dogs in combat with this modality.
  • Diplomate, American College of Veterinary Surgeons-Small Animal
  • Residency, Small Animal Surgery, Oklahoma State University, Stillwater
  • Master of Science, Veterinary Biomedical Science, Oklahoma State University, Stillwater
  • Doctor of Veterinary Medicine, Oklahoma State University, Stillwater
Dr. Giles’ wife is also a veterinarian, and they have two children. His favorite pastimes include outdoor activities, endurance fitness events and traveling. The family pets are Lucy, a golden doodle, and Mia, a poodle.
Dr. Hannah Gordon is a small animal medicine and surgery intern. She is in a lab coat holding a bald eagle.
Hannah Gordon
DVM
Veterinarian Associate
Hannah Gordon
DVM
Veterinarian Associate
Servicing Locations
Dr. Hannah Gordon is a small animal medicine and surgery intern with an interest in neurology.
  • Doctor of Veterinary Medicine, University of Georgia, Athens
Dr. Gordon enjoys drawing, watercolor and sewing. She has one cat.
Dr. Chris Greiner is an intern in our surgery service.
Chris Greiner
DVM
Surgery
Chris Greiner
DVM
Surgery
Servicing Locations
Dr. Chris Greiner is an intern in our surgery service. His particular clinical interest is cranial cruciate ligament disease.
  • Internship, Small Animal Medicine & Surgery, VCA Loomis Basin Veterinary Clinic, Loomis CA
  • Doctor of Veterinary Medicine, University of California, Davis
  • Bachelor of Science, Biomedical Sciences, Texas A&M University, College Station
Dr. Greiner enjoys reading sci-fi/fantasy, cooking, video games, and spending time with his cat Kapow.
Lauren Guerra
DVM
Emergency Medicine
Lauren Guerra
DVM
Emergency Medicine
Servicing Locations
Dr. Lauren Guerra has worked in Texas, Belize, Guatemala and South Africa with a wide variety of species to include white tail deer, cheetahs, African grey parrots and cape buffaloes.
  • Doctor of Veterinary Medicine, Texas A&M University, College Station
  • Bachelor of Science, Biomedical Science, Texas A&M University, College Station
Dr. Guerra enjoys singing, Krav Maga, a form of self-defense, traveling, hiking and wildlife and nature photography. She has two dogs, a border collie and shepherd/collie mix, and two Quaker parrots.
John Haller
DVM, DACVR
Diagnostic Imaging
John Haller
DVM, DACVR
Board Certified in Veterinary Radiology
Diagnostic Imaging
Servicing Locations
Dr. John Haller's clinical interests include abdominal ultrasonography, and he has published research on diagnosing disorders of the spleen and reproductive system. He also enjoys cross-sectional imaging, particularly thoracic CT and oncologic and neurological brain diseases as visualized with magnetic resonance imaging.
  • Diplomate, American College of Veterinary Radiology
  • Residency, Radiology, Gulf Coast Veterinary Specialists, Houston TX
  • Internship, Small Animal Medicine & Surgery, Southern Arizona Veterinary Specialty & Emergency Center, Tucson
  • Doctor of Veterinary Medicine, Texas A&M University, College Station
  • Bachelor of Science, Biology, University of Texas at San Antonio
Geoff Hennig
DVM, MS, DACVS
Surgery
Geoff Hennig
DVM, MS, DACVS
Board Certified in Veterinary Surgery
Surgery
Servicing Locations
Dr. Geoff Hennig was a production artist with a focus on biological and medical illustration before attending veterinary school. He has served on the surgical faculty at Louisiana State University as a visiting assistant professor. His research interests have been principally in the area of canine orthopedic diseases including the effects of injectable local anesthetics on cartilage health.
  • Diplomate, American College of Veterinary Surgeons
  • Master of Science, Veterinary Sciences, Louisiana State University, Baton Rouge
  • Residency, Small Animal Surgery, Louisiana State University, Baton Rouge
  • Internship, Small Animal Medicine & Surgery, University of Georgia, Athens
  • Clinical Rotation, University of Georgia, Athens
  • Doctor of Veterinary Medicine, Ross University, St Kitts & Nevis, West Indies
Sarah K. Israel
DVM, DACVS-SA
Surgery
Sarah K. Israel
DVM, DACVS-SA
Board Certified in Veterinary Surgery-Small Animal
Surgery
Servicing Locations
Dr. Sarah Israel enjoys all aspects of surgery.
  • Diplomate, American College of Veterinary Surgeons-Small Animal
  • Residency, Small Animal Surgery, Texas A&M University, College Station
  • Internship, Small Animal Medicine & Surgery, The Ohio State University, Columbus
  • Doctor of Veterinary Medicine, Texas A&M University, College Station
Sukjung Lim
DVM
Emergency Medicine
Sukjung Lim
DVM
Emergency Medicine
Servicing Locations
Dr. Lim worked in South Korea as a government veterinarian at the Seoul Research Institute of Public Health and Environment and in general practice before coming to the States. His clinical interests include diagnostic ultrasound, neurology, internal medicine, clinical pharmacology and emergency surgery, particularly laceration repair and gastrointestinal foreign body removal.
  • Clinical Rotation, Louisiana State University, Baton Rouge
  • Doctor of Veterinary Medicine, Konkuk University, Seoul, Korea
Dr. Lim enjoys tennis, jogging and movies. He has two older sibling cats, Miwoo and Boru. Slightly challenging companions but with him since their birth, the cats made the long journey from South Korea to the U.S.
William Liska
DVM, DACVS
Surgery
William Liska
DVM, DACVS
Board Certified in Veterinary Surgery
Surgery
Servicing Locations
Dr. William Liska has played a significant role in the development of the canine total knee replacement, the micro total hip replacement (THR) for small dogs and for cats and a newly upgraded design of hip replacement implants for larger dogs. Having performed more than 2,000 joint replacement procedures, he has been the leader in numbers of received THR referrals and procedures performed in the state of Texas for many years. He is certified by the instrumentation and implant manufacturer, BioMedtrix LLC, Boonton, NJ, in all hip, knee and elbow replacement procedures currently available.

The founder of Global Veterinary Specialists and the Global Veterinary Specialists Foundation, Dr. Liska now dedicates his career to these organizations. The educational and surgical services offered focus primarily on joint replacement surgery and orthopedics for dogs and cats. He has been an instructor in more than 40 joint replacement workshops, training other veterinary surgeons in the U.S. and many other countries. Dr. Liska was the recipient of the 1999 Practitioner of the Year and the 2009 Specialty Practitioner of the Year Awards from the Texas Veterinary Medical Association. Additionally, he was awarded the American Veterinary Medical Association Practitioner Research Award in 2009 for his canine and feline hip and knee replacement studies.

Dr. Liska also serves as a hip replacement surgeon and consultant with Sarah Israel, DVM, DACVS, at BluePearl - Stone Oak in San Antonio.
  • Diplomate, American College of Veterinary Surgeons
  • Residency, Surgery, Animal Medical Center, New York City
  • Internship, Surgery, Animal Medical Center, New York City
  • Doctor of Veterinary Medicine, Iowa State University, Ames
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Kimberly Menard
DVM, MS, DACVIM (Oncology)
Oncology
Kimberly Menard
DVM, MS, DACVIM (Oncology)
Board Certified in Veterinary Oncology
Oncology
Servicing Locations
Dr. Kimberly Menard believes there is an “amazing and unique bond” among oncology patients, clients and veterinarians. Her particular clinical interests include histiocytic diseases and lymphoma, and she’s excited about the advances in immunotherapy.
  • Diplomate, American College of Veterinary Internal Medicine (Oncology)
  • Master of Science, Biomedical Science, University of Missouri, Columbia
  • Residency, Oncology, University of Missouri, Columbia
  • Internship, Small Animal Medicine & Surgery, South Texas Veterinary Specialists, San Antonio
  • Doctor of Veterinary Medicine, Louisiana State University, Baton Rouge
  • Bachelor of Science, Animal Science, Louisiana State University, Baton Rouge
Dr. Menard enjoys watching LSU football, travelling, hiking and spending time with Zoe, her very energetic mixed breed dog.
Alicia Niedzwecki
DVM, DACVECC
Critical Care
Alicia Niedzwecki
DVM, DACVECC
Board Certified in Veterinary Emergency & Critical Care
Critical Care
Servicing Locations
Dr. Alicia Niedzwecki’s clinical interests include treating snakebites, acute kidney injury, Addison’s disease, immune-mediated diseases, coagulopathies and congestive heart failure. Procedures she enjoys include temporary tracheostomies, GI endoscopies and pericardiocenteses.
  • Diplomate, American College of Veterinary Emergency & Critical Care
  • Residency, Small Animal Emergency & Critical Care, South Texas Veterinary Specialists, San Antonio TX
  • Internship, Small Animal Medicine & Surgery, South Texas Veterinary Specialists, San Antonio TX
  • Doctor of Veterinary Medicine, Texas A&M University, College Station
  • Bachelor of Science, Biomedical Science, Texas A&M University, College Station
Dr. Niedzwecki enjoys tennis, gardening and spending time with her family and pets, Xena, a German shepherd, and Zoe, a Siamese cat.
Jessica Norvet
MVB
Surgery
Jessica Norvet
MVB
Surgery
Servicing Locations
Dr. Jessica Norvet finds it rewarding to alleviate pain, remove a tumor or reconstruct a limb. She enjoys all types of surgery and looks forward to continuing advances in minimally invasive surgical procedures like laparoscopy and thorascopy.
  • Residency, Small Animal Surgery, VCA Animal Specialty Group, Los Angeles CA
  • Internship, Small Animal Surgery, VCA Animal Specialty and Emergency Center, Los Angeles CA
  • Internship, Small Animal Medicine & Surgery, VCA Animal Specialty Group, Los Angeles CA
  • Bachelor of Veterinary Medicine, University College Dublin, Ireland
  • Bachelor of Arts, Biology, University of Southern California, Los Angeles
Dr. Norvet enjoys horseback riding, scuba diving with her husband and playing with her dog Finn, a pit bull mix who likes to give hugs and sit up.
Douglas Owens
DVM, MS
Internal Medicine
Douglas Owens
DVM, MS
Internal Medicine
Servicing Locations
Dr. Douglas Owens has over twenty years of experience in the veterinary field to include the U.S. Army Veterinary Corps, specialty medicine, public health, research, marine mammal, exotics and private practice. He has also held instructor positions at University of Illinois, Eastern Kentucky University, and Auburn University. He is skilled in all aspects of both critical care and internal medicine.
  • Residency, Small Animal Internal Medicine, University of Illinois, Urbana-Champaign
  • Master of Science, Biology, Eastern Kentucky University, Richmond
  • Doctor of Veterinary Medicine, Auburn University, AL
  • Bachelor of Science, Animal Science, Eastern Kentucky University, Richmond
Dr. Owens enjoys volunteering for youth programs and with his church. His interests include music, classic cars, road cycling, hiking/backpacking, camping, wilderness survival and all things water sport related. Married with four children, the family has four pets: great Pyrenees Koda, tortoiseshell cat Meow Meow, teacup poodle Shadow, and guinea pig George.
Dr. Lizzy Pearson is an intern in our surgery service.
Lizzy Pearson
DVM
Surgery
Lizzy Pearson
DVM
Surgery
Servicing Locations
Dr. Lizzy Pearson is an intern in our surgery service. Her clinical interests include wound management and orthopedics, especially wound management.
  • Internship, Small Animal Surgery, VCA Animal Specialty Center of South Carolina, Columbia
  • Internship Small Animal Medicine & Surgery, VCA Veterinary Care Specialty and Referral Center, Albuquerque NM
  • Doctor of Veterinary Medicine, Texas A&M University, College Station
  • Bachelor of Science, Biomedical Science, Texas A&M University, College Station
Dr. Pearson likes horseback riding, saltwater fishing, trap and skeet shooting and reading. Her goldendoodle is Remington.
Holly Roberts
DVM, MS, DACVD
Dermatology
Holly Roberts
DVM, MS, DACVD
Board Certified in Veterinary Dermatology
Dermatology
Servicing Locations
Dr. Holly Roberts loves taking care of the itchy, scratchy, crusting animals in her community. Her particular interests include immune-mediated diseases, multi-drug resistant staphylococcal infections and atopic dermatitis.
  • Diplomate, American College of Veterinary Dermatology
  • Residency, Dermatology, The Ohio State University, Columbus
  • Master of Science, Comparative and Veterinary Medicine, The Ohio State University, Columbus
  • Internship, Small Animal Medicine & Surgery, Fifth Avenue Veterinary Specialists, New York City
  • Doctor of Veterinary Medicine, Auburn University, AL
  • Bachelor of Science, University of Kentucky, Lexington
Dr. Roberts enjoys running, indoor cycling, hiking, stand-up paddle boarding, photography, traveling, acting like a tourist in her own town, binge watching TV on rainy days and eating copious amounts of baked goods. Ernie is her fluffy cat.
Stephen Spence
MVB
Surgery
Stephen Spence
MVB
Surgery
Servicing Locations
Dr. Stephen Spence is a resident in our surgery service. He has a strong interest in orthopedic procedures, in particular fracture management cases.
  • Internship, Small Animal Surgery, BluePearl Veterinary Partners, San Antonio
  • Internship, Small Animal Medicine & Surgery, VCA Animal Specialty Group, Los Angeles CA
  • Bachelor of Veterinary Medicine, University College Dublin, Ireland
  • Bachelor of Science, Animal Science, University of Massachusetts, Amherst
Dr. Stephen Spence enjoys scuba diving, traveling the world with his wife, who is also a veterinarian, and watching television shows and movies with the family pit bull/Australian shepherd mix Finn.
Catherine Strey
DVM
Critical Care
Catherine Strey
DVM
Critical Care
Servicing Locations
Dr. Catherine Strey enjoys all aspects of critical care medicine.
Jennifer Wiley
DVM, DACVIM (Oncology)
Oncology
Jennifer Wiley
DVM, DACVIM (Oncology)
Board Certified in Veterinary Oncology
Oncology
Servicing Locations
Dr. Jennifer Wiley was the first full-time, board-certified oncologist in San Antonio. As a child, Dr. Wiley lost her mother to breast cancer, so she felt fortunate to participate in a program during her residency that provided treatment for local shelter dogs with mammary tumors. Their treatment and tumors were used in many different research studies to further our knowledge of cancer in both dogs and women.
  • Diplomate, American College of Veterinary Internal Medicine (Oncology)
  • Residency, Oncology, University of Pennsylvania, Philadelphia Internship, Small Animal Medicine & Surgery, University of Illinois, Urbana-Champaign
Fred Williams, Jr.
DVM, DACVS
Surgery
Fred Williams, Jr.
DVM, DACVS
Board Certified in Veterinary Surgery
Surgery
Servicing Locations
Dr. Fred Williams, Jr. grew up working in his dad’s veterinary clinic. He is the cofounder of South Texas Veterinary Specialists.
  • Diplomate, American College of Veterinary Surgeons
  • Residency, Small Animal Surgery, University of Tennessee, Knoxville Internship, Small Animal Medicine & Surgery, North Carolina State University, Raleigh
  • Doctor of Veterinary Medicine, Texas A&M University, College Station Bachelor of Science, Veterinary Science, Texas A&M University, College Station
Dr. Williams enjoys spending time outdoors with his wife of more than 20 years, Michelle, and their two sons, Jacob and Jackson.
Katheryn Wolfe
DVM, DVSc, DACVIM (Neurology)
Neurology, Neurosurgery
Katheryn Wolfe
DVM, DVSc, DACVIM (Neurology)
Board Certified in Veterinary Neurology
Neurology, Neurosurgery
Servicing Locations
Dr. Katheryn Wolfe loves treating a patient with seizures in the morning then performing surgery on a paralyzed patient in the afternoon. The field of neurology continues to fascinate her, especially inflammatory conditions like meningoencephalitis and meningomyelitis, and she continues to strive for answers to the tough questions: Why? What triggers this condition? Do genetic or environmental factors play a role?
  • Diplomate, American College of Veterinary Internal Medicine (Neurology)
  • Doctor of Veterinary Science, Neurology & Neurosurgery, University of Guelph, Ontario, Canada
  • Internship, Small Animal Medicine & Emergency, Carolina Veterinary Specialists, Charlotte NC
  • Internship, Neurology & Neurosurgery, Dallas Veterinary Surgical Center, TX
  • Doctor of Veterinary Medicine, Texas A&M University, College Station
  • Bachelor of Science, Biology, George Washington University, Washington D.C.
Dr. Wolfe loves to spend time with her husband, two kids and four dogs: Bella, Watson, Millie and Emma. Her personal hobbies include fishing and working out, specifically participating in triathlons.

Technicians (VTS)

Mary Saunders
RVT, VTS (ECC)
Critical Care
Mary Saunders
RVT, VTS (ECC)
Veterinary Technician Specialist (Emergency & Critical Care)
Critical Care
Servicing Locations
Mary treats each of her patients as if they were her own pets, striving to give the best possible care. She finds the fast pace of emergency care rewarding, and finds cardiopulmonary resuscitation particularly rewarding.