Meet our Doctors

Courtney Mallett, DVM, DACVIM (Oncology)

Medical Oncologist


Dr. Mallett grew up in West Virginia and received her Bachelor of Science degree in biological sciences from Clemson University followed by her Doctor of Veterinary Medicine degree from the University of Georgia College of Veterinary Medicine. She then completed a one-year internship in small animal medicine and surgery at Florida Veterinary Specialists and a three-year residency in medical oncology at the University of Georgia. After completing her residency, she worked at private specialty referral hospitals in Atlanta, Georgia and Vancouver, WA before moving to Washington, D.C. to practice at Friendship Hospital for Animals.  Dr. Mallett is board-certified in medical oncology by the American College of Veterinary Internal Medicine, and she currently serves on the exam rating committee for this organization.  She is also a member of the Veterinary Cancer society and has been a past reviewer for Veterinary Pathology.  Throughout her professional career, she has had the opportunity to participate in clinical trials as well as in the training of many interns and residents.  Her interests include all aspects of cancer treatment, especially developing strong relationships with her patients and clients. In her spare time, she enjoys reading, traveling, and exercising with her energetic Border Collie, Huckleberry.

Clinical Areas of Interest

Hematopoietic cancers (especially multiple myeloma), osteosarcoma, hemangiosarcoma, and feline mast cell tumors

Why Do You Work at Friendship?

Collaborative working environment, compassionate patient care, and cutting-edge medicine


  • BS in Biological Sciences, Cum Laude, Clemson University (Clemson, SC)
  • DVM, University of Georgia (Athens, GA)
  • Internship in Small Animal Medicine and Surgery, Florida Veterinary Specialists (Tampa, FL)
  • Residency in Medical Oncology, University of Georgia (Athens, GA)

Board Certifications

  • Diplomate of the American College of Veterinary Internal Medicine (Oncology)

Publications and Research

  • Kicenuik K, Northrup N, Dawson A, Locke J, Villamil JA, Chretin J, Sfiligoi G, Clifford c, Rosenburg M, Hamilton T, Regan R, Parsons-Doherty M, Mallett C, Philibert J, Impellizari J, Hofmeister E. Efficiency, ease of use and cost associated with use of Equashield, Phaseal, or no closed system transfer device for administration of cancer chemotherapy to a dog model.  Proceedings of the 34th Annual Conference of the Veterinary Cancer Society, St. Louis, MO, 2014:45.  Vet Comp Oncol 2015 Apr 10.
  • Merrick CH, Schleis SE, Smith AN, Mallett CL, Graff EC, Johnson C. Hypercalcemia of malignancy associated with renal cell carcinoma in a dog.  J Am Anim Hosp Assoc 2013;49(6):385-388.
  • Pierro, JA, Mallett CL, Saba CF, Phase I clinical trial of vinorelbine in tumor-bearing cats. Proceedings of the 32nd Annual Conference of the Veterinary Cancer Society, Las Vegas, NV, 2012:47.  J Am Vet Med Assoc 2013;27:943-948.
  • Mallett CL, Northrup NC, Saba CF, Rodriguez CO, Rassnick KM, Gieger TL, Childress MO, Howerth EW. Immunohistochemical characterization of feline mast cell tumors.  Proceedings of the 2010 ACVIM Forum, Anaheim, CA.  Vet Pathol 2013;50(1):106-109.
  • Dank G, Rassnick KM, Kristal O, Rodriguez CO, Clifford CA, Ward R, Mallett CL, Gieger T, Segev G. Clinical characteristics, treatment, and outcome of dogs with presumed primary hepatic lymphoma: 18 cases (1992-2008).  Proceedings of the 28th Annual Conference of the Veterinary Cancer Society, Seattle, WA, 2008:95.  J Am Vet Med Assoc 2011;239(7):966-971.

Friendship provides state of the art, comprehensive services for our clients and patients. But, more than that, we provide a caring team who understand the unique human-animal bond. View Our Services