VCA Sacramento Veterinary Referral Center
9801 Old Winery Place
Sacramento, CA 95827

Tel: (916) 362-3111
Fax: (916) 362-0190
Comprehensive guide to cancer diagnosis and treatment in cats and dogs
Oncology services include:
  • Advanced Diagnostic Imaging
       - CT, MRI
       - Ultrasound
       - Fluoroscopy
  • Biopsies and Cancer Staging
  • Chemotherapy
  • Immunotherapy
  • Palliative Treatment of Cancer Pain
Board-Certified Veterinary Oncologists:

Danielle O'Brien, DVM, DACVIM (Oncology)
During her first year of veterinary school, Dr. O'Brien developed an interest in cancer research and treatment after her
own cat succumbed to lymphoma. She earned her DVM from Kansas State University in 2008, where she received an
award for proficiency in Oncology. The following year, she undertook an internship in small animal medicine and surgery
with VCA San Francisco Veterinary Specialists. In 2012, she completed a three-year residency in small animal medical
oncology at UC Davis and obtained board certification. She stayed on an additional year at UC Davis as a clinical staff
oncologist. She authored the largest collective study on canine splenic marginal zone lymphoma, and has further
research and clinical interests in canine melanoma and feline and indolent lymphomas. She also enjoys collaborating with
other oncologists in conducting clinical trials. Dr. O'Brien's top priority is to help all her patients achieve a better quality of
life, regardless of their circumstances.

In her spare time, Dr. O'Brien enjoys visiting her local cat shelter where she can give love and attention to cats who have
not yet found a home. She also enjoys running, yoga, painting, spending time with her husband and spoiling her own
cats, Cloë and Jaxon.