Our Veterinarians

Dr. Jonathan Blakely is a veterinarian in our surgery service.
Jonathan Blakely
DVM, DACVS-SA
Surgery
Jonathan Blakely
DVM, DACVS-SA
BluePearl Veterinarian
Board Certified in Veterinary Surgery-Small Animal
Surgery
Servicing Locations
Dr. Jonathan Blakely likes all aspects of surgery. His particular clinical interest is orthopedics, especially treating fractures.
  • Diplomate, American College of Veterinary Surgeons-Small Animal
  • Residency, Small Animal Surgery, Mississippi State University, Starkville
  • Internship, Small Animal Surgery, Dallas Veterinary Surgical Center, TX
  • Internship, Small Animal Medicine & Surgery, South Texas Veterinary Specialists, Stone Oak
  • Doctor of Veterinary Medicine, Texas A&M University, College Station
  • Bachelor of Science, Texas A&M University, College Station
Dr. Blakely’s favorite pastime is spending time with his wife and kids. He also enjoys playing music, including guitar, banjo and the flute.
Dr. Bradley Book is board certified in veterinary emergency and critical care medicine.
Bradley Book
DVM, DACVECC, DABVP (Canine & Feline Practice)
Critical Care
Bradley Book
DVM, DACVECC, DABVP (Canine & Feline Practice)
BluePearl Veterinarian
Board Certified in Veterinary Emergency & Critical Care
Critical Care
Servicing Locations
Dr. Bradley Book enjoys all aspects of emergency medicine.
  • Diplomate, American Board of Veterinary Practitioners (Canine & Feline Practice)
  • 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.
Dr. Walter Burghardt, Jr. is board certified in veterinary behavioral medicine.
Walter Burghardt
DVM, PhD, DACVB
Behavioral Medicine
Walter Burghardt
DVM, PhD, DACVB
BluePearl Veterinarian
Board Certified in Veterinary Behavioral Medicine
Behavioral Medicine
Servicing Locations
Dr. Walter Burghardt has over 35 years of veterinary behavioral medicine experience treating dogs, cats and exotics. His particular clinical interest is treating behavioral problems that strain the bond between pet and owner.
  • Diplomate, American College of Veterinary Behaviorists
  • Doctor of Philosophy, Biopsychology, University of Maryland, College Park
  • Doctor of Veterinary Medicine, University of Florida, Gainesville
  • Master of Arts, Florida Atlantic University, Boca Raton
  • Bachelor of Arts, Florida Atlantic University, Boca Raton
Dr. Burghardt is married with three grown sons. His favorite pastimes include flying, bicycling, traveling and hiking. He loves dogs, cats and tropical fish.
Photo coming soon.
Oscar Carballo
DVM
Surgery
Oscar Carballo
DVM
BluePearl Veterinarian
Surgery
Servicing Locations
Dr. Oscar Carballo Jr. is a resident in our surgical service. He enjoys all aspects of surgery but has a particular interest in orthopedic and minimally invasive procedures.
  • Internship, Small Animal Surgery, BluePearl Specialty + Emergency Pet Hospital, San Antonio, TX
  • Internship, Small Animal Surgery, Coral Springs Animal Hospital, FL
  • Doctor of Veterinary Medicine, Auburn University, AL
  • Bachelor of Science, Florida International University, Miami
Dr. Carballo enjoys mountain bike riding, scuba diving, working out, spending time with family, traveling and fishing. He has a chocolate lab named Shamus.
Dr. Monica Chwala is a doctor in our internal medicine service.
Monica Chwala
DVM
Internal Medicine
Monica Chwala
DVM
BluePearl Veterinarian
Internal Medicine
Servicing Locations
Dr. Monica Chwala’s clinical interests include the treatment of immune-mediated and infectious diseases, endocrine disorders, liver and kidney/urinary diseases, gastrointestinal disease and respiratory disease. She particularly enjoys the use of minimally invasive procedures to examine and treat many conditions, like urinary incontinence or stones.
  • Residency, Small Animal Internal Medicine, University of Wisconsin, Madison
  • Internship, Small Animal Medicine & Surgery, North Carolina State University, Raleigh
  • Doctor of Veterinary Medicine, Kansas State University, Manhattan
  • Associate of Applied Science, Veterinary Technology, Fox College, Tinley Park IL
  • Bachelor of Science, Finance, Economics, University of Illinois, Normal
Dr. Chwala loves new experiences and adventures, meeting people, good food, horseback riding and sports. She has two Weimaraners, Lexy and Addie.
Dr. Thomas Edwards is a clinician in our critical care service.
Thomas Edwards
DVM, MS, DACVECC
Critical Care
Thomas Edwards
DVM, MS, DACVECC
BluePearl Veterinarian
Board Certified in Veterinary Emergency & Critical Care
Critical Care
Servicing Locations
Dr. Thomas Edwards is a retired army veterinarian who has more than 15 years of experience caring for severely injured animals. He has lectured both nationally and internationally on critical care topics, such as on trauma, resuscitation, blood transfusions, mechanical ventilation and heart failure.

Dr. Edwards has a passion for improving the care that military working dogs receive after being wounded in the battlefield, and he has received the Association of Military Surgeons of the United States Research and Development award for establishing a research program in this area. He remains engaged in this research and writing in order to bring cutting-edge trauma care to veterinary medicine.
  • Diplomate, American College of Veterinary Emergency & Critical Care
  • Residency, Small Animal Emergency & Critical Care, University of Georgia, Athens
  • Master of Science, Veterinary and Biomedical Sciences, University of Georgia, Athens
  • Internship, Small Animal Medicine & Surgery, Department of Defense Military Working Dog Center, Lackland, TX
  • Doctor of Veterinary Medicine, University of Georgia, Athens
  • Bachelor of Science, Animal Science, University of Illinois, Urbana
Dr. Edwards shares his home with his wife, two young children and two Great Pyrenees, Yuki and Nova.
Dr. James Giles is board certified in small animal surgery.
James T. Giles III
DVM, MS, DACVS-SA
Surgery
James T. Giles III
DVM, MS, DACVS-SA
BluePearl Veterinarian
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. Christopher Greiner is a clinician in our emergency medicine service.
Christopher Greiner
DVM
Emergency Medicine
Christopher Greiner
DVM
BluePearl Veterinarian
Emergency Medicine
Servicing Locations
Dr. Christopher Greiner is particularly interested in fracture management and repair, obstructive GI disease and wound management.
  • Internship, Small Animal Surgery, Mississippi State University, Starkville
  • Internship, Small Animal Surgery, BluePearl Specialty + Emergency Pet Hospital, San Antonio, TX
  • Internship, Small Animal Medicine & Surgery, VCA Loomis Basin, Loomis, CA
  • Doctor of Veterinary Medicine, University of California, Davis
  • Bachelor of Science, Biomedical Sciences, Texas A&M University, College Station
Dr. Greiner has a cross-country-traveling tuxedo cat named Kapow and enjoys boutique coffee shops, craft beer and sci-fi/fantasy literature.
Dr. John Haller is board certified in veterinary radiology. He is holding a turtle.
John Haller
DVM, DACVR
Diagnostic Imaging
John Haller
DVM, DACVR
BluePearl Veterinarian
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
Dr. Geoff Hennig is board certified in veterinary surgery.
Geoff Hennig
DVM, MS, DACVS-SA
Surgery
Geoff Hennig
DVM, MS, DACVS-SA
BluePearl Veterinarian
Board Certified in Veterinary Surgery-Small Animal
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-Small Animal
  • 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
Photo coming soon.
Katelyn Hickman
DVM
Emergency Medicine
Katelyn Hickman
DVM
BluePearl Veterinarian
Emergency Medicine
Servicing Locations
Dr. Katelyn Hickman is part of our emergency medicine training program for clinicians. She is dedicated to providing excellent medical care for patients in an emergency setting. Her interests include stabilizing and managing trauma patients, as well as ophthalmology and neurology.
  • Doctor of Veterinary Medicine, Oklahoma State University, Stillwater
  • Bachelor of Science, Agricultural Science and Natural Resources, Oklahoma State University, Stillwater
Dr. Hickman enjoys kayaking, pyrography and hiking with her dog, Miss Lemon Drop.
Dr. Sarah Israel is board certified in small animal surgery. She is holding a small dog.
Sarah K. Israel
DVM, DACVS-SA
Surgery
Sarah K. Israel
DVM, DACVS-SA
BluePearl Veterinarian
Board Certified in Veterinary Surgery-Small Animal
Surgery
Servicing Locations
  • 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
Dr. Stephanie Kennedy is board certified in small animal internal medicine.
Stephanie Kennedy
DVM, DACVIM (SAIM)
Internal Medicine
Stephanie Kennedy
DVM, DACVIM (SAIM)
BluePearl Veterinarian
Board Certified in Small Animal Internal Medicine
Internal Medicine
Servicing Locations
Dr. Stephanie Kennedy has more than 12 years of experience in veterinary medicine, including work with the U.S. Army Veterinary Corp. She enjoys all aspects of internal medicine but is especially interested in the evaluation of gastrointestinal disease, immune-mediated disease, infectious diseases and endocrine disorders.
  • Diplomate, American College of Veterinary Internal Medicine (Small Animal Internal Medicine)
  • Residency, Small Animal Internal Medicine, University of Minnesota, St. Paul
  • Doctor of Veterinary Medicine, University of Minnesota, St. Paul
  • Bachelor of Science, Animal Science, University of Wisconsin-River Falls
Dr. Kennedy’s favorite hobbies include traveling the world, hiking, scuba diving, experiencing new adventures and meeting new people.
Dr. Alicia Niedzsweck is board certified in veterinary emergency and critical care.
Alicia Niedzwecki
DVM, DACVECC
Critical Care
Alicia Niedzwecki
DVM, DACVECC
BluePearl Veterinarian
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.
Dr. Stephen Spence is a resident in our surgery service. He is holding a black dog.
Stephen Spence
MVB
Surgery
Stephen Spence
MVB
BluePearl Veterinarian
Resident
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.
Dr. Catherine Strey is a veterinarian in our critical care service. She is hugging a yellow lab.
Catherine Strey
DVM
Critical Care
Catherine Strey
DVM
BluePearl Veterinarian
Critical Care
Servicing Locations
Dr. Catherine Strey enjoys all aspects of critical care medicine.
Photo coming soon.
Adeline Wadel
DVM
Emergency Medicine
Adeline Wadel
DVM
BluePearl Veterinarian
Emergency Medicine
Servicing Locations
Dr. Adeline E. Wadel is part of our emergency medicine training program for clinicians. Emergency medicine often brings in cases that are stressful and emotional for pet owners, and Dr. Wadel cares deeply about helping her clients through that process.
  • Doctor of Veterinary Medicine, Auburn University, Auburn AL
  • Bachelor of Science, Zoology, Kent State University, Kent OH
In her spare time, Dr. Wadel enjoys being actively involved in her local church, reading, playing music and cooking breakfast. She has a Siamese cat named Lil Bean who walks on a leash and loves to visit parks.
Dr. Fred Williams, Jr. is board certified in veterinary surgery. He is on his knees making eye contact with a yellow lab.
Fred Williams, Jr.
DVM, DACVS
Surgery
Fred Williams, Jr.
DVM, DACVS
BluePearl Veterinarian
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.
Dr. Katheryn Wolfe is board certified in veterinary neurology.
Katheryn Wolfe
DVM, DVSc, DACVIM (Neurology)
Neurology, Neurosurgery
Katheryn Wolfe
DVM, DVSc, DACVIM (Neurology)
BluePearl Veterinarian
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.