Dr. Queen
Dr. Erica Queen

Erica Queen, DVM, DACVIM

Owner, Internal Medicine Specialist The U.C. Davis School of Veterinary Medicine is regarded as one of the top three veterinary schools in the world. As a graduate of this distinguished university Dr. Queen was honored as a resident by faculty for her clinical and teaching contributions in 2009.  She also received the Small Animal Resident award from the senior students for her contributions to their education in clinical rotation in 2010. Her knowledge and expertise in Small Animal Internal Medicine are equaled only by her generosity to and compassion for all things big and small. Dr. Queen has now opened her own specialty/emergency practice to serve as the specialty arm to all the wonderful veterinary hospitals in the area and to the clients and pets she currently cares for, along with the ones she has not yet met.
Small Animal Internal Medicine Residency, University of California, Davis, Veterinary Medical Teaching Hospital, July 2010. DVM, Small Animal Medicine, University of California, Davis, School of Veterinary Medicine, June 2006. Bachelor of Science, Biological Sciences, University of California, Davis, March 2002.
Small animal internal medicine with particular emphasis in the areas of infectious disease, endocrinology, respiratory disease, and hepatic disease.
Jan S. Suchodolski , Mary L. Foster, Muhammad U. Sohail, Christian Leutenegger, Erica V. Queen, Jörg M. Steiner, Stanley L. Marks. The Fecal Microbiome in Cats with Diarrhea. Published: May 19, 2015 DOI: 10.1371/journal.pone.0127378 Johnson, LR, Queen, E, Vernau, W, Sykes, JE, Byrne, B; Microbiologic and cytologic assessment of bronchoalveolar lavage fluid from dogs with lower respiratory tract infection: 105 cases (2001-2011). Journal of Veterinary Internal Medicine. Queen, EV, Marks, L, Farver, TB. Prevalence of selected bacterial and parastic agents in feces from diarrheic and healthy control cats from Northern California. Journal of Veterinary Internal Medicine. 26 (2012): 54-60. Queen, EV, Vaughan, MA, Johnson, LR. Brochnoscopic debulking of tracheal carcinoma in 3 cats using a wire snare. Journal of Veterinary Internal Medicine. 24 (2010): 990-993. Foley, JE, Queen, E, Sacks, B, Foley, P; GIS-facilitated spatial epidemiology of tick-borne diseases in coyotes (Canis latrans) in northern and coastal California. Comparative Immunology, Microbiology & Infectious Diseases. 28 (2005): 197-212. Center for Comparative Medicine- NIH Summer Research Fellow, 2003: Cytokine Profiling of Northern California Rodent Species. UC Davis Department of Nutrition: Adipocyte culture to investigate metabolism and hormone production; research relevant to obesity and diabetes mellitus.
  • Dr. Charles E. Cornelius Memorial Scholarship, May 2003
  • Theodora Peigh Outstanding Achievement Scholarship, May 2004
  • Salsbury Scholarship for Academic Achievement, May 2005
  • Phi Zeta Honor Society Member, May 2006
  • Merck Veterinary Manual Achievement Award, May 2006
  • Feline Medicine Service Award, May 2006
  • Chocolate Chip Oliver Scholarship for Small Animal Clinical Proficiency, May 2006
  • Dr. Jacob Traum Award for Superior Interest and Accomplishment in Microbiology or a Related Subject Area, May 2006
  • Lagniappe Smith Memorial Award (for clinical and teaching contributions as a resident) 2009
  • Small Animal Resident Award – awarded by the veterinary class of 2010
  • American Veterinary Medical Association, 2002-present
  • California Veterinary Medical Association, 2002-present
  • American Association of Feline Practitioners, 2004-2006
Dr. Walsh
Dr. Peter Walsh

Peter Walsh, DVM, DACVS, MVSc

Boarded Surgeon

Dr. Peter Walsh is a 1994 graduate of Colorado State University’s School of Veterinary Medicine. He also has a Masters in Veterinary Science. Dr. Walsh joined the faculty at the University of California Davis where he rotated coverage for all three of the small animal surgical services, and was ultimately instrumental in developing and running the small animal surgical oncology service. Dr. Walsh is board certified with the American College of Veterinary Surgeons, and has a particular interest in surgical oncology and reconstructive surgery. He is considered one of the leading authorities on limb spare procedures in dogs with bone tumors. In the novel by Pam Houston, the character of Dr. Evans is based on the real Dr. Peter Walsh. The story may be fiction, but when Dr. Evans crawls into a crate to spend the night with a patient, it is truth. Simply one of the best out there, as a doctor, surgeon, and human being.
Dr. Siemens
Dr. Lori Siemens

Lori Siemens, DVM, DACVIM


Dr. Lori Siemens graduated from the UC Davis School of Veterinary Medicine in 1992. After an internship in small animal medicine at Michigan State University, Dr. Siemens went back to UC Davis for her cardiology residency and became a board-certified cardiologist in 1996. She started the first mobile cardiology service in the Sacramento area in 2007. She is 100% dedicated to helping every cardiology patient achieve the highest quality of life possible while being treated for their heart disease. Appointments are scheduled for one hour to ensure not only a thorough exam and history, but to also give personal attention to the clients and patients she will come to care for as they all move along this journey together.
Dr. Koski
Dr. Marilyn Koski

Marilyn Koski, DVM, CVA, CCRT

Acupuncture & Rehabilitation Specialist

Dr. Marilyn Koski is a graduate of the UC Davis School of Veterinary Medicine and is certified in the specialties of Veterinary Acupuncture and Canine Physical Rehabilitation. She has been a faculty veterinarian at the Veterinary Medical Teaching Hospital at the UC Davis School of Veterinary Medicine for over 15 years, and in private practice for 23 years. Dr. Koski's primary focus is to provide pain management and rehabilitation services to dogs, cats and exotic animals, and to educate students, clients and colleagues in the value of integrative medicine therapies. Dr. Koski is involved in clinical research focusing on the use of low level laser therapy to relieve pain and promote tissue healing. She has also worked with exotic animal species in zoos and aquaria in California, Hong Kong, Australia and Thailand, and she has worked with wildlife species in California and the Antarctic. In her free time, Dr. Koski enjoys hiking, gardening, art projects, and cooking for friends and family. She shares her life with her husband of 32 years and a varied family of furred, feathered and scaled "kids.”
Dr. Morey
Dr. Deb Morey


Emergency & Critical Care Specialist

Debbie Morey, an emergency and critical care specialist, obtained her DVM from UC Davis in 1992. After graduation, she completed a year-long internship in small animal medicine and surgery at the Sacramento Animal Medical Group. Debbie then moved to Fresno for a year of intensive emergency and critical care experience at the Veterinary Emergency Service before returning to Sacramento to head up the emergency department at the Sacramento Animal Medical Group for the next four years. In 1998 Dr. Morey embarked on a residency training program in Emergency Medicine and Critical Care while also working at several busy emergency practices and raising two children. In 2005, she successfully passed the rigorous examination to become a Diplomate of the American College of Veterinary Emergency and Critical Care. Debbie’s professional interests include shock resuscitation, critical care monitoring, nutrition, wound management, and training veterinarians and technicians in critical care techniques. When off duty, she enjoys spending time with her 2 boys, 2 dogs, and 5 cats. She also enjoys downhill skiing, running, hiking, and wine-tasting.
Dr. Kohen
Dr. Casey Kohen

Casey Kohen, DVM, DACVECC

Emergency & Critical Care Specialist

Dr. Kohen received his undergrad degree from UC Santa Barbara. He then completed the Small Animal Track and participated in a small animal rotating internship at North Carolina State University before joining the critical care/emergency residency program at the U.C. Davis VMTH.
Dr. Queen
Dr. Walsh
Dr. Siemens
Dr. Koski
Dr. Morey
Dr. Kohen