Our Team

Ironhorse Vet Care Staff

Ironhorse Vetcare staff include board-certified specialists in surgery, internal medicine and 24 hour emergency services. Our experienced technicians and friendly support staff ensure that your pet receives the best care and that you are kept up to date on their care and stay with us.


John Haburjak

DVM, Diplomate ACVS

 Dr. John Haburjak graduated from UC Davis Veterinary School in 1993. He practiced for 5 years in and around the SF Bay Area before completing 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 his clinical surgical interests include surgical oncologic procedures of the face, head and neck, corrective orthopedic procedures, and disorders of the canine stifle. 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 singles tennis, Oakland A’s baseball, discovering the Tahoe basin with his kids and cooking (not to mention eating, too!). He shares his life with his wife, Aimee (a veterinarian pathologist), daughters Eva & Emery and sons Ian & Isaac – along with Lady Addison (bubble-headed Japanese spaniel), Poppy (a Cavalier King Charles Spaniel with a freckled nose!), Pixie (mutant Chihuahua) – some Guinea Pigs and a Cat named Ginger Cookie.

Jamie Wignall

BVetMed (Hons), MS, Diplomate ACVS

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 a Masters in Business Administration.

His professional interests include the application of minimally invasive surgical techniques (Arthroscopy, Laparoscopy, and Thoracoscopy) in the management of soft tissue and orthopedic disease, and the surgical treatment of cruciate disease, fractures, and Total Hip Replacement.

Andrew Grange

BSc (Hons), BVetMed, Diplomate ACVS

Dr. Andrew Grange is a Diplomate of the American College of Veterinary Surgeons, and Chief of Staff of OakVet Animal Specialty Hospital. He attended University College London where he received his bachelor’s degree in orthopedic science, and then graduated in 2008 from the Royal Veterinary College in London with a degree in veterinary medicine. Following graduation he completed a rotating internship in Southern California, and a residency in small animal surgery at Angell Animal Medical Center in Boston, MA. 

His professional interests include the application of minimally invasive surgical techniques (Arthroscopy, Laparoscopy, and Thoracoscopy) in the management of soft tissue and orthopedic disease, and the surgical treatment of cruciate disease, fractures, and Total Hip Replacement. 

Dr. Grange’s personal interests include skiing, cycling, ice hockey, and spending time with his wife, Allison (also a veterinarian), children Amelia and Ethan, their dog, Abby, and 5 cats. 

Christine H. Kim

DVM, Diplomate ACVIM

Dr. Kim received her Doctor of Veterinary Medicine degree at UC Davis School of Veterinary Medicine in 2006. She went on to pursue a 1-year rotating internship at Veterinary Specialty Hospital of San Diego. She returned to UC Davis to complete a 3-year residency in small animal internal medicine in 2010. Her residency research project investigating diagnostic modalities in cats with Feline Interstitial Cystitis, was given the House Officer Small Animal Research Award. 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 daughters, a rescue dog named Penny, and an assortment of snails, caterpillars, and insects captured in jars by the kids. She enjoys cooking, sewing, and playing the piano.

Valerie K. Fournier


Dr. Valerie Fournier is a 2007 graduate of Michigan State University’s College of Veterinary Medicine. While there, she started a dual degree in public health, graduating in 2009 with a masters in public health (disaster preparedness/emergency response) from the University of Minnesota.

She grew up splitting her time between a suburb of metro Detroit and a beef cattle farm in Northern Virginia. She’s a proud Red Wings fan, loves classic cars, and sometimes slips a “y’all” into a sentence if she’s not paying attention!

Immediately after graduating Dr. Val began working in small animal emergency medicine and she has practiced small animal emergency medicine nearly exclusively since graduating. Dr. Val worked all over Southeast and Northern Michigan at various 24 hour hospitals, learning new things at each.

In 2017, she packed up her 2 Pittie mixes, Saaz and Cascade, and headed west to California. After a short stint in non clinical work,  she found she missed the pace of the ER too much, and began doing relief at area hospitals. Professionally, her areas of interest include infectious/zoonotic disease, pain/anxiety management, and teaching. One of her favorite things is to mentor veterinary students and new graduates, and recently she got to have a very proud moment when a mentee she’d known since high school graduated with her doctorate.

Dr. Val and her husband, also a veterinarian, have 3 dogs between them now. The oldest is a 13+ (yes, really) Bassett mix named Cali who keeps the Pitties in line! They spend as much time outdoors as possible, hiking, canoeing, kayaking, and enjoying all that Northern California has to offer.

Rebecca Rader

DVM, Diplomate ACVECC

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, geriatric medicine and pain management. Outside of work, she enjoys traveling, live music, and spending time with her friends and family, which includes two dogs named Cardi Chi and Chacho. They have their own stroller and accompany her almost everywhere.

Meredith Stepita

DVM,Diplomate ACVB

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.

Brook Niemiec

DVM, Diplomate AVDC, EVDC

Dr. Niemiec is a 1994 graduate of the University of California, Davis School of Veterinary Medicine. Dr. Niemiec is a Board Certified Specialist in Veterinary Dentistry of both the American and European Veterinary Dental Colleges. In addition he is a Fellow in the Academy of Veterinary Dentistry. He is one of fewer than 10 veterinarians worldwide to hold all three of these certificates. Read more about what Dr. Niemiec brings to veterinary dental care.

Edith Blair


Dr. Edie Blair grew up in Washington, DC and moved to California for veterinary school.  She received her Doctor of Veterinary Medicine degree from the University of California, Davis.  While in school she was able to explore a variety of interests including equine medicine, shelter medicine, and emergency medicine.

During her time in school she fell in love with California and made the move to the Bay Area.  She started working in emergency medicine after graduating from vet school and joined the IronHorse team early in 2020.  Her professional interests include emergency medicine, pain control, and infectious disease.

Outside of the clinic she enjoys running, mountain biking, and rock climbing.  She hopes to explore all the outdoor activities California has to offer and is working her way through all the state parks.  She has a squat pittie named Tyson who enjoys napping, snacks, and the occasional (short) hike.

Wayne Tsang


Dr. Wayne Tsang was born and raised in Hong Kong. He found himself in love with the human-animal bond from his childhood and wanted to be their voice. He started playing table tennis at the age of 7 and hoped to become a professional table tennis player. However, at the age of 14 he decided to end his table tennis career and move to the United States to pursue his lifelong dream of becoming a veterinarian. He has become familiar with the Bay Area after working as a veterinary technician in local emergency hospitals for about 10 years including his time off during veterinary school.

Dr. Tsang earned his Bachelor of Science Degree in Biochemistry from UC Davis. After graduation, he continued to pursue a Master in Business Administration at UC Davis in hope to own his practice one day. He graduated from veterinary school at Western University of Health Science in California. While in veterinary school, even though he enjoyed the fast-paced environment in emergency medicine, he discovered his professional interest in both soft tissue and orthopedic small animal surgery. He is currently finishing up a Masters in Public Health through the University of Minnesota and Veterinary Acupuncture Certification through Chi Institute in Florida. After graduating from veterinary school, he decided to return to the Bay Area to join Ironhorse Vetcare.

Dr. Tsang’s personal interests include table tennis, weightlifting, hiking, snowboarding, and recently found his new interest as an amateur magician during veterinary school.

Fun fact: Dr. Tsang has been to Disneyland over 500 times during veterinary school. 

Grace McBride


Dr. Grace McBride grew up in Singapore and Indonesia. She moved to the UK to attend veterinary school at The Royal (Dick) School of Veterinary Studies in Edinburgh, Scotland. While at school, she discovered an interest in neurology and anaesthesia, and hopes to develop these interests further during her internship at IronHorse VetCare.   

Grace moved to California to start a life with her husband, who is also a veterinarian. Together, they have adopted two hooligans; a German Shepherd, Skye and a Husky mix, Balto. In their spare time, they enjoy playing polo (the horsey kind), skiing in Tahoe, rock-climbing, and kayaking. 

Grace looks forward to meeting you and taking care of your own beloved hooligans! 

Lauren Tseng


Dr. Lauren Tseng originally hails from Honolulu, Hawaii and completed her undergraduate degree in Companion Animal Sciences from UC Davis. She attended Western University of Health Sciences for veterinary school where she became involved in conservation research of red pandas and white-bellied pangolins. Her work led her into field research at the Chengdu Research Base of Giant Panda Breeding in China. Her findings were used to create and refine artificial insemination protocols of endangered species in captive environments. Whilst in vet school, she also gained an appreciation for companion animal nutrition and the pet food industry by working with a leading veterinary diet company. 

From her time as an undergrad, she has always loved Northern California and especially the Bay Area. She looks forward to serving the community’s pets through her internship at Ironhorse Vetcare. Her professional interests include nutrition, internal medicine, and conservation research and hopes to use this internship as a foundation for a residency in companion animal nutrition. 

In her free time (when that actually happens!), she enjoys napping with her two dogs (Khalisee the chiweenie and Kuma the shiba inu), coming up with balanced recipes for pets, making electronic music, and being the ultimate foodie. Dr. Tseng is super excited to be working with you as an advocate for your pet’s health!  

Danielle Sigua

BVMS (Hons)

Dr. Danielle Sigua comes from the Bay Area and completed her undergraduate studies at UC Berkeley. She previously held a career in Business Administration before a love of animals drew her towards veterinary medicine. Dr. Sigua attended veterinary school at the University of Glasgow in Scotland, where she quickly discovered the wonders of the veterinary field. Her professional interests include soft tissue surgery and emergency medicine.

Outside of the clinic, Dr. Sigua enjoys traveling, hiking, dancing, and eating donuts. Some of her life goals include visiting all 7 continents (only 2 more to go!) and every U.S. National park. She is excited to be back in the Bay Area to join the IronHorse team! She hopes to share her love of animals through high quality medicine and compassionate care for your pets. 

Sarah Thompson


Dr Sarah Thompson attended the University of California, Davis after spending much of her life before college living overseas. She earned her Bachelor of Arts degree in Biology from UC Davis, and then attended the UC Davis School of Veterinary Medicine, earning her Doctor of Veterinary Medicine degree in 2000.

Dr Thompson has a strong interest in emergency medicine and critical care, and has practiced emergency medicine in the Bay Area for the past 15 years. What she loves most about practicing veterinary medicine is that every day is a new experience. She enjoys the challenges and excitement of emergency medicine, and working as part of a team to improve the health and quality of life for pets and their families. 

When not in the hospital, Dr. Thompson enjoys spending time with her family and pets – a retired guide dog named Rhubarb, her golden retriever Waldo, and two cats. She loves travelling and scuba diving, and is always excited to head out on a new adventure.

Luis Perez

DVM, Practice Limited to Surgery

Dr. Perez was born in Southern CA, and was raised in Phoenix, AZ. He attended Arizona State University where he received his Bachelor Degrees in Kinesiology and Biology. He initially intended to pursue a career in human medicine, but found his calling in the veterinary field. After working as a veterinary technician for a few years in San Diego, he left for the islands of St. Kitts and Nevis to pursue his veterinary education at Ross University School of Veterinary Medicine.

After his academic training was completed, he finished his clinical training at the University of Tennessee (UT). During his time at UT, he was involved with their rehabilitation service, and became certified as a canine rehabilitation Practitioner (CCRP). Following a year in Tennessee, he moved to the east bay area where he completed a one-year rotating internship at Ironhorse Vetcare with emphasis on surgery, emergency and internal medicine. It was here where he would meet his future fiancée, and became a proud owner of a well-behaved German Shepherd (Zeus).

His travels would not end there, as he traveled to Malvern, PA to complete a three-year surgical residency at Hope Veterinary Specialist. There his family would expand as he and his fiancée rescued a senior pug (Frank). He has returned to the East Bay to be reunited with Ironhorse Vetcare as a surgeon. His professional interests cover all aspects of orthopedics, soft tissue, and neurosurgery, with particular interest in wound management, surgical oncology, and cruciate disease. Dr. Perez’s personal interests include snowboarding, basketball, football, and spending time with his Fiancée, Dani, their two dogs, and his cat (Captain Kirk).

Management Staff

Practice Manager:  

Breann Kvernes

Client Relations and Referral Coordinator:

Renee McComb

Support Staff

Lauren Acuna, RVT
Ana Alves
Ali Arnold
Gina N Badura-Buccellato, RVT
Melanie Blom, RVT
Catherine Cerf-Arriola
Misty Christian, RVT
Sadie St. Pierre
Kim Lepon, RVT
Francisco Lopez

Daniella Cincera
Anna Rose Denza
Megan Hamilton, RVT
Kaylei Hardin, RVT
Lori Heath, RVT
Whitney Larson
Nicole Westermann
Jamie Walker
Sylvia Rodriguez

Audrey Lewis
Denise Long, RVT
Serena Marks
Katherine Martinez, RVT
Allan Molina, RVT
Sarah Pereira, RVT
Cindy Pierce
Claire Longman
Danielle Mooney, RVT

Elizabeth Saccullo, RVT
Shelby Salinas
Elizabeth Schisler
Ashley Suddarth
Alyssa Trujillo
Elianna Barajas-Castro, RVT
Gia Martin
Charone DeShazier, RVT
Yenifer Maciel
Alexandra DiMercurio

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