Our Animal Hospital Staff


John Haburjak, DVM, Diplomate, American College of Veterinary Surgeons. Owner.

Dr. John Haburjak graduated from UC Davis Veterinary School in 1993 with his Doctor of Veterinary Medicine Degree. He practiced for 5 years before returning to academics to complete a combined surgical residency program in San Diego and the University of Illinois.

Dr. Haburjak is a Diplomate of the American College of Veterinary Surgeons, and his research interests include orthopedic trauma, and disorders of the carpus. He has several publications in the Veterinary Orthopedic and Traumatology Journal, Journal of Small Animal Practice, and the Journal of the American Animal Hospital Association. His clinical surgical interests include surgical oncologic procedures of the face, head and neck, corrective orthopedic procedures, and neurosurgery (spinal). Finally, he has dedicated most of his post-graduate emphasis on minimally invasive procedures including: laparoscopy, thoracoscopy and interventional radiology (urethral and tracheal stenting).

Dr. Haburjak’s hobbies include SCUBA diving, Oakland A’s baseball, road cycling and cooking (not to mention eating, too!). He shares his life with his wife, Aimee (also a veterinarian), daughters Eva & Emery and a son Ian, Addison (bubble-headed Japanese spaniel), Poppy (a Cavalier King Charles Spaniel with a freckled nose!) and S’mores the mini-Lop.


Jamie Wignall, BvetMed(Hons),MS, Diplomate, American College of veterinary Surgeons

Dr. Wignall comes from a family of veterinarians in the United Kingdom, and after pursuing veterinary school at the Royal Veterinary College in London, he returned home for a year in rural mixed animal practice. Adventure beckoned, and he completed his surgical training at Louisiana State University where he found a southern girl, a love for the New Orleans Saints and a terrier called Maverick. He then worked in Southern California for 4 years where the family expanded to add two more terriers, Biffy and Ziggy. His hobbies include snowboarding, soccer, hiking and spending time with his partner, Luli, also a veterinarian.

His professional interests cover all aspects of orthopedics, soft tissue, and neurosurgery, with a particular emphasis on the upper airway and minimally invasive surgery. Practice management has become a new interest and he is studying towards an Masters in Business Administration.


Christine H. Kim, DVM, Diplomate, American College of Veterinary Internal Medicine

Dr. Kim graduated with a degree in animal science from UC Davis in 2000. After working in the biotechnology industry for two years performing microsurgery on rodents, she decided to return to UC Davis for veterinary school. She received her Doctor of Veterinary Medicine degree in 2006, and was awarded the Outstanding Senior Award by the American Association of Feline Practitioners and the Internal Medicine Award by Pfizer Animal Health. She went on to pursue a 1-year rotating internship at Veterinary Specialty Hospital of San Diego. She completed a 3-year residency in small animal internal medicine also at UC Davis in 2010. Her residency research project investigating diagnostic modalities in cats with Feline Interstitial Cystitis was given the House Officer Small Animal Research Award.

Dr. Kim is passionate about all aspects of internal medicine, but has particular interest in diseases of the gastrointestinal tract, lower urinary tract, and kidneys. Her mission is to nurture the human-animal bond by providing the next step in veterinary care.

Dr. Kim originally hails from Sacramento. She lives with her husband, two young daughters, high maintenance cats named Ben and Cheese, a betta fish named Closet (of course named by her preschooler), and an assortment of snails, caterpillars, and insects captured in jars of various sizes by said preschooler. She enjoys cooking, cleaning house, playing piano, and eating dark chocolate.


Katrina Stewart, BVSc(Hons), BSc Adv (Hons), MS

Dr. Katrina Stewart grew up in Australia, completing an advanced science degree at the University of Wollongong followed by two years working in an Embryology Laboratory in Sydney. She returned to study her veterinary degree at the University of Sydney, and following graduation worked in the Atherton Tablelands in Far North Queensland in a rural mixed practice for 2 years. Here she worked with many native animals including work for the local Bat Hospital.

Dr. Stewart went on to pursue a 1 year rotating internship at Mississippi State University followed by a residency in Small Animal Internal Medicine at Purdue University. She is excited to be in California and looks forward to working in all areas of Internal Medicine. Outside of work she enjoys being in the outdoors, is an avid swimmer, and loves to bake and crochet.


Barry Kipperman, Diplomate, American College of Veterinary Internal Medicine

Dr. Kipperman is from Long Island, New York and received his DVM in 1987 from the University of Missouri. He completed an internship at the prestigious Animal Medical Center in New York City, and a residency at University of California at Davis. Dr. Kipperman has been in a 24 hour referral practice since 1992, and was board certified in internal medicine in 1994. Dr. Kipperman founded VetCare in 1997. Dr. Kipperman has published numerous articles on the topics of animal advocacy and veterinary ethics. Dr. Kipperman is a guest lecturer in the UC Davis veterinary school ethics course, and has presented symposia on standards of care and veterinary ethics at national meetings. When away from the hospital, Dr. Kipperman plays guitar and piano, and lives with his two cats (Toby and Lilly), his Chihuahua mix (Buttercup), and his pug (Winston).

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Shannon Brady, DVM. Director of Veterinary Emergency Medicine

Dr. Shannon Brady is a South Bay Area native, born and raised in Cupertino, CA. She completed her undergraduate studies in Animal Science at Cal Poly, San Luis Obispo, and went on to earn her veterinary medical degree from Western University of Health Sciences, located in sunny Southern California, graduating with distinction in 2013.
Following graduation, Dr. Brady moved back to the Bay Area to continue her veterinary medical training, by completing a one year rotating small animal internship, here at IronHorse VetCare. From there, Dr. Brady decided to remain locally in the beautiful East Bay, where she worked in both general practice and emergency medicine part-time. Knowing that emergency medicine was always her passion, Dr. Brady is excited to return to IronHorse VetCare, as the new Director of Emergency Medicine.
Dr. Brady’s professional interests include emergency medicine, internal medicine, surgery, and preventative care. In her free time she enjoys traveling, live music, gourmet food, and supporting the San Jose Sharks. She shares her life with her husband, Colin, their beloved, dog like tabby, Monkey, and their mischievous, black and white kitten, Panda.
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Yanshan Er, BVSc

Dr Er grew up in sunny Singapore before completing her veterinary degree at the University of Sydney in Australia, graduating in 2015. During her time there she worked with practitioners from all fields of veterinary medicine gaining invaluable experience. Following graduation she moved to Florida and completed a rotating internship in medicine and surgery at Coral Springs Animal Hospital.

Dr Er enjoys living in the vibrant San Francisco Bay Area. She spends her free time traveling, trying new cuisines, exploring the city and swimming. When back home in Singapore, Dr Er enjoys spending time with her family indulging in delicious Singaporean food and playing with her 2 family dogs. Teddy her Golden-doodle and Penny her Golden Retriever who are both a handful!


Rebecca Rader, DVM, Diplomate, American College of Veterinary Emergency and Critical Care

Dr. Rebecca Rader grew up in Illinois and graduated from University of Illinois Veterinary School in 2006. She then completed a 1 year general, rotating internship at Bay Area Veterinary Specialists in San Leandro. Her residency program in emergency and critical care took her to Ocean State Veterinary Specialists in Rhode Island for 4 years, but her love for the Bay Area brought her back to California in 2011 after the completion of her residency.

Dr. Rader is a Diplomate of the American College of Veterinary Emergency and Critical Care. Her professional interests include trauma, blood clotting disorders, and critical illnesses. She enjoys working in a variety of situations including part-time work with Muttville (senior dog rescue). Her most recent interest has been learning more about pain management and geriatric care. In order to develop this, she is pursuing certification in veterinary acupuncture. Outside of work, she enjoys traveling, live music, and spending time with her family, which includes two dogs named Zyzzx and Sheila. They have been with her through all of her cross country moves!


Luis Perez, DVM

Dr. Luis Perez was raised in the desert of Phoenix, AZ, and attended Arizona State University for a B.S. in Kinesiology and Biology. Following graduation he moved to San Diego, CA where he worked as a veterinary assistant/technician at a large small animal veterinary general practice, and as a surgical technician for a mobile veterinary surgeon. From there, he attended Ross University School of Veterinary Medicine in St. Kitts and Nevis for his academic training and the University of Tennessee for his clinical year. He graduated in 2017. He is currently undergoing his one-year rotating internship in medicine, surgery, and internal medicine  and hopes to move into a surgical residency program afterwards. Dr. Perez is getting certified as a certified canine rehabilitation practitioner (CCRP). In his free time, he enjoys hiking, sports, reading and spending time with his cat Captain Kirk.





Meredith Stepita, DVM, Diplomate, American College of Veterinary Behaviorists

Dr. Stepita grew up in Maryland, but now calls Northern California home. She received her DVM from the University of Tennessee in 2006. After completing an internship and working in general practice in Arizona she entered into the Clinical Veterinary Behavior Residency Program at the University of California-Davis, becoming a Board-Certified Veterinary Behaviorist in 2011. She spends most of her time in her San Francisco Bay Area-based practice, Veterinary Behavior Specialists, helping pet owners improve their pet’s behavior problems, and finds working with dedicated pet owners to be highly rewarding. Dr. Stepita’s research involves the frequency of parvovirus in puppies attending puppy socialization classes. Results of this study showed that vaccinated puppies attending these classes were no more likely to be diagnosed with parvovirus than those not attending these classes. She has authored chapters on canine aggression, feline anxiety, feline house soiling, and canine and feline mourning in veterinary texts. Dr. Stepita is also a local and national speaker. Her areas of interest include canine and feline anxiety and aggression, the human-animal bond, and animal welfare. She shares her life with her husband Chris and their dogs (Chewy and Snoopy), cats (Maddie, Cali, and Tarzan), and the occasional foster dog. Please visit Dr. Stepita‘s website vetbehaviorspecialists.com for more information or to schedule an appointment.

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Bethany Jackson, DVM, Diplomate, American College of Veterinary Internal Medicine (Cardiology)

Dr. Bethany Jackson is a board certified veterinary cardiologist. She received her Doctor of Veterinary Medicine from Virginia-Maryland Regional College of Veterinary Medicine. She completed a rotating internship at The Animal Medical Center in New York City, followed by a cardiology internship and residency at MedVet Medical and Cancer Centers for Pets in Worthington, OH. She is board certified by the American College of Veterinary Internal Medicine in the sub-specialty of Cardiology.

Dr. Jackson’s interest in cardiology stemmed from experience with her own dog being under the care of a veterinary cardiologist. She saw first hand how access to specialty consultation can help to further patient care. Her goal is to provide timely, accurate, and detailed cardiology consultations to allow accurate diagnosis and treatment of cardiac disease in pets so they can live long, fulfilling lives.

Please visit Jackson Veterinary Cardiology Consultants website for more information.


Renee McComb, Practice Manager

Renee McComb grew up in the East Bay along the 680 corridor. As a child, she played in the hills with her animals both great and small. Renee knew at a young age she was going to dedicate her time to being around animals.  Renee has been committed to enhancing the lives of companion animals since 1984. She has successfully managed several Veterinary practices in the area. She owns an established pet care business, and dedicates her free time to volunteering for animal rescue groups, services for the Veterans, and special needs children and horses.

Some of Renee’s accomplishments include her development of several rescue groups and non-profits. Some of the groups she is recognized in are: Bay Area German Shepherd Rescue, Paws in Need, SonRise Equestrian Foundation, Horses Healing Hearts, and The National Search Dog Foundation. Renee was recognized in 2015 by the International Rotary Foundation for her furtherance of better understanding and friendly relations among our community.

She spends time with her horse and dog, and loves hiking and motorsports. Renee’s commitment to the animal-human bond makes her a valuable part of our management team.

Staff List


  • Christina Furr, RVT
  • Judy Hart, RVT
  • Lori Heath, RVT
  • Liz Saccullo, RVT
  • Mary Gagnon, RVT
  • Glenda Michalowski, RVT
  • Liz Christensen
  • Bonnie Chan
  • Denise Long
  • Danilella Cincera
  • Lexi Grillos
  • Emilee Jensen
  • Becca Wetherby
  • William Graham

Reception Team:

  • Todd Phillips
  • Virginia Galletta
  • Katy Van Sandt
  • Cindy Pierce