Faculty / Staff
Stan Marks, BVSc, PhD, DACVIM (Internal Medicine, Oncology), DACVN - Chief of Service
Dr. Stan Marks earned his veterinary degree from the University of Pretoria, South Africa and completed an internship in small animal medicine and surgery at the University of Missouri - Columbia. He completed a small animal internal medicine residency program at the University of Florida and an oncology residency program at UC Davis. Dr. Marks received his PhD in nutrition from UC Davis, and is currently a professor in the Department of Medicine and Epidemiology. Dr. Marks is board certified in the American College of Veterinary Internal Medicine in the specialties of internal medicine and oncology, and is a Diplomate of the American College of Veterinary Nutrition. He is the director of the Companion Animal Gastrointestinal Laboratory that focuses on furthering our understanding and knowledge of bacterial-associated diarrhea, with an emphasis on clostridial diseases. In addition, Dr. Marks has research interests in the diagnosis and management of dysphagia (disorders of swallowing) in dogs. Dr. Marks has received numerous teaching awards over the years, has published extensively in the areas of canine and feline gastroenterology, and has contributed chapters to a number of textbooks.
Larry Cowgill, DVM, PhD, DACVIM
Dr. Larry Cowgill received his DVM degree from UC Davis, and completed his internship and residency training at the University of Pennsylvania. He was a National Institutes of Health Special Research Fellow at the Renal and Electrolyte Section of the University of Pennsylvania School of Medicine and earned a PhD in comparative medical sciences. He is board certified in small animal internal medicine and is associate dean for Southern California clinical programs, co-director of the UC Veterinary Medical Center-San Diego (UCVMC-SD), and professor in the Department of Medicine and Epidemiology. He oversees the clinical nephrology programs and the companion animal hemodialysis units at the VMTH and the UCVMC-SD. Dr. Cowgill has more than 35 years of experience in veterinary internal medicine, nephrology, and teaching, and has trained many of the leading veterinary nephrologists throughout the world. He is a pioneer in the application of hemodialysis in companion animals, and remains a leading authority in the development of blood purification therapies for renal diseases in animals and people.
Jonathan Dear DVM, DACVIM
Dr. Jonathan Dear is a graduate of the University of Georgia College of Veterinary Medicine. He completed an internship in small animal medicine and surgery at the VCA Emergency Animal Hospital and Referral Center in San Diego. Following completion of his residency in small animal medicine at UC Davis, Dr. Dear became board certified in small animal internal medicine. He currently serves as an assistant professor, and provides the school with small animal internal medicine expertise in support of clinical teaching and clinical service. His interests include minimally invasive diagnostic and therapeutic procedures as well as lower urinary disease and endocrinology.
Ann Della-Maggiore, DVM, DACVIM
Dr. Ann Della-Maggiore earned her DVM degree from UC Davis. She then completed an internship in small animal medicine and surgery at the Veterinary Medical and Surgical Group in Ventura, California, and a residency in small animal internal medicine at UC Davis, becoming board certified in internal medicine. Dr. Della-Maggiore currently serves as an assistant professor, utilizing her internal medicine expertise in clinical teaching and clinical service duties. Her interests include endocrinology, infectious and immune mediated disease, as well as minimally invasive diagnostic and therapeutic procedures.
Chen Gilor, DVM, PhD, DACVIM
Dr. Chen Gilor received his DVM (1997) from the Koret School of Veterinary Medicine, The Hebrew University of Jerusalem, Rehovot, Israel. After working in private practice for five years in Israel and New York, he completed an internship in small animal medicine at the Animal Medical Center in New York (2005) and a residency in small animal medicine at the University of Illinois (2008). He then earned a PhD (2010) from the College of Veterinary Medicine, University of Illinois at Urbana-Champaign. Dr. Gilor worked for two years as an internal medicine consultant for Idexx Laboratories in Wetherby, England and then served on faculty at The Ohio State University as an assistant professor of Small Animal Medicine (2012). He joined UC Davis as an assistant professor of Small Animal Internal Medicine in 2016, specializing in endocrinology. Dr. Gilor's research focuses on diabetes mellitus, obesity, and the interaction between gastrointestinal hormones and systemic metabolism. He is a Diplomate of the American College of Veterinary Internal Medicine-Small Animal Internal Medicine.
Lynelle Johnson, DVM, MS, PhD, DACVIM
Dr. Lynelle Johnson received her DVM degree from The Ohio State University, was in private practice on Long Island for three years, and completed a Master's degree and residency program at the University of Illinois. She is board certified in small animal internal medicine. Dr. Johnson's Master's research investigated an experimental model of feline asthma, and she completed a post-doctoral fellowship in radiation oncology at Colorado State University. She received a grant from the National Institute of Health's Heart, Lung and Blood Institute to study the effects of exercise on pulmonary vascular function and received her PhD in physiology from the University of Missouri. Dr. Johnson is the respiratory section editor for the 5 Minute Veterinary Consult and has written a textbook entitled Clinical Canine and Feline Respiratory Medicine. Dr. Johnson is a member of Veterinary and Comparative Respiratory Society, and her research interests include pulmonary vascular biology, cardiopulmonary interactions and clinical respiratory disease of dogs and cats.
Carrie Palm, DVM, DACVIM
Dr. Carrie Palm earned her DVM degree from UC Davis, and completed an internship and residency at the University of Pennsylvania. She is board certified in small animal internal medicine. Following a year in a specialty practice at Veterinary Medical and Surgical Group in Ventura, California, Dr. Palm completed a fellowship in hemodialysis and joined the faculty in clinical small animal internal medicine.
Jane Sykes, BVSc (Hons), PhD, DACVIM - Chief Veterinary Medical Officer, VMTH
Dr. Jane Sykes obtained her veterinary degree at the University of Melbourne in Australia and a PhD in veterinary microbiology, which focused on upper respiratory tract infections of cats. She completed a residency at the University of Minnesota and is board certified in small animal internal medicine, with a special interest in infectious disease, immune-mediated disease and hematologic disease. She is a co-founder and past president of the International Society for Companion Animal Infectious Diseases and president of the ACVIM Specialty of Small Animal Internal Medicine. Her research interests are primarily in the field of canine and feline infectious diseases, including canine and feline hemoplasmosis, leptospirosis, cryptococcosis, infections of immunosuppressed dogs and cats, antimicrobial resistance and tick-borne diseases. She has authored numerous papers and textbook chapters, is the author of the textbook Canine and Feline Infectious Diseases. Dr. Sykes also serves as the chief veterinary medical officer of the VMTH.
Jodi Westropp, DVM, PhD, DACVIM
Dr. Jodi Westropp received her veterinary degree from The Ohio State University, and completed an internship in small animal medicine and surgery at The Animal Medical Center in New York City. She returned to Ohio to complete a residency in small animal medicine and post-doctoral training evaluating neurologic and inflammatory influences on bladder function in cats. She is board certified in the small animal internal medicine, and is the director of the G.V. Ling Urinary Stone Analysis Laboratory. Her research interests include disorders related to the lower urinary tract of cats and dogs, including urinary stone disease, urinary incontinence and feline idiopathic cystitis.
Autumn Davidson, DVM, DACVIM - Staff Veterinarian
Dr. Autumn Davidson earned her DVM degree from UC Davis. She completed an internship in small animal medicine and surgery at Texas A&M University, and a residency at UC Davis. Dr. Davidson is board certified in small animal internal medicine, and is an associate veterinarian at UC Davis specializing in small animal theriogenology (reproduction). In addition, Dr. Davidson practices at the PetCare Veterinary Hospital in Santa Rosa, a private referral practice, where she receives both internal medicine and reproduction cases.
Brian Hardy, DVM, MS, DACVIM - Staff Veterinarian
Dr. Brian Hardy earned his DVM from the University of Minnesota. He completed an internship in small animal medicine and surgery at The Ohio State University, followed by a combined small animal internal medicine residency and Master’s degree program at the University of Minnesota. Prior to joining UC Davis, Dr. Hardy worked in private practice in Santa Cruz, California, and then at a veterinary medical device company. His areas of clinical interest are infectious and immune-mediated diseases, endocrine disorders, minimally invasive procedures and gastroenterology.
Sean Hulsebosch, DVM, DACVIM - Staff Veterinarian
Dr. Sean Hulsebosch earned his veterinary degree from Michigan State University. He completed an internship in small animal medicine and surgery at The Animal Medical Center in New York City. Dr. Hulsebosch then worked in private practice in the New York City area before joining UC Davis as a resident in 2012. In 2015, he completed his residency and stayed on at UC Davis as a staff veterinarian.
Moria Borys, DVM - Resident II
Lucy Kopecny, BVSc (Hons) - Resident I
Dr. Lucy Kopecny obtained her veterinary degree from the University of Sydney, Australia. She worked in private practice for just over one year following graduation. She then completed a one-year rotating internship at the Small Animal Specialist Hospital, Australia before beginning her residency at UC Davis in 2015.
Laura Lim, BVSc (Hons), MANZCVSc (Small Animal Medicine) - Resident II
Dr. Laura Lim obtained her veterinary degree from the University of Melbourne, Australia. She then spent several years in small animal private practice, before completing a one-year rotating internship at the University Veterinary Teaching Hospital Sydney, Australia followed by a second internship with a strong focus in small animal internal medicine.
Krystle Reagan, DVM, PhD - Resident I
Dr. Krystle Reagan attended Colorado State University where she studied immunology of mosquito born viruses during her PhD training, graduating in 2010. She then earned her veterinary degree from Colorado State University in 2014. Upon graduating, Dr. Reagan completed a one-year small animal rotating internship at VCA West Los Angeles Animal Hospital before becoming a small animal internal medicine resident at UC Davis.
Sirima Yaemsiri, DVM - Resident III
Dr. Sirima Yaemsiri obtained her veterinary degree from North Carolina State University College of Veterinary Medicine. She then completed an internship in medicine and surgery at Colorado State University before joining UC Davis.
Alyse Zacuto, DVM - Resident III
Dr. Alyse Zacuto obtained her DVM degree from UC Davis. She returned to Davis after completing a rotating internship at the University of Minnesota.
Meghan Brownrigg, Service Referral Coordinator
Susan Cox, RVT
Katie Douthitt, RVT
John Kirby, AHT
Cameron Sette, RVT
MaryAnn Prosnik, RVT
Sean Naylor, AHT
Valerie Walker, RVT