We are committed to caring for your pet – while maintaining the highest level of safety for our Associates and pet owners. We thank you for your continued patience and support. 
Read More

Sue Downing

DVM, DACVIM/Oncology
Dr. Downing
Veterinary Specialist
Availability: Tuesday - Saturday
Dr. Downing

At a Glance

Board Certified:


My Pets:

Sophie - Pomeranian
Freya - Chihuahua
Doug - Pit bull
Faith - Pomeranian
School: Colorado State University

A graduate of the Colorado State University College of Veterinary Medicine, Dr. Downing then completed an internship in small animal medicine and surgery in Arizona. After completing a three-year residency in comparative oncology at Purdue University, she successfully completed the requirements for certification to become a Diplomate (Board Certified Oncologist) of the ACVIM in the specialty of oncology. Following certification, she worked for a local veterinary oncology group, serving as Los Angeles Medical Director, before joining VCA ASEC.

Dr. Downing is a charter member of the ACVIM Foundation and has received recognition on the Veterinary Honor Role by the Morris Animal Foundation. She also serves as a Commissioner at the Los Angeles Zoo and volunteers regularly with Catnippers to sterilize feral cats.
See our departments


VCA ASEC offers comprehensive cancer therapy management by full-time board-certified oncologist, Dr. Sue Downing, including consultations exploring the prognosis and options following cancer diagnosis. Evaluation of the cancer patient incorporates discussion of the tumor behavior, review of tests previously completed, further disease staging and printed materials for review at home. The optimal treatment plan will be presented along with other available options and palliative care, reviewing effectiveness, time involved, side effects, and cost of treatment. Therapies include chemotherapy using novel agents and protocols, immunotherapy, hospice care and pain management.

Oncology Department Services:

  • Oncologic evaluation & staging
  • Advanced chemotherapy
  • Hospice care
  • Pain management, aspiration and biopsy procedures
  • Bone marrow aspiration
  • Pathology & cytology report consultations
  • Chemotherapy antidotes
  • Management of treatment side effects

Common Cancers in Pets:


For other types of cancer, please refer to the Veterinary Society of Surgical Oncology website.

VCA Animal Specialty & Emergency Center

1535 South Sepulveda Blvd.

Los Angeles, CA 90025

Main: Specialty: 310-473-5906 / Emergency: 310-473-1561

Fax: 310-479-8976

Hospital Hours:

    Mon-Sun: Open 24 hours

Specialty Hours:

By Appointment

Are you a Primary Care Veterinarian? We have dedicated resources for you.

Loading... Please wait