​Catherine O’Brien, MD

​Catherine O'Brien, MD

Specialist Training

MD: University of California, Davis

  • Ernest M. Gold Award for Excellence in Internal Medicine

Residency: University of California Davis Medical Center

Fellowship: Oregon Health & Science University

“It is a privilege and an honor to get to know my patients and their families. Having that personal connection allows me to better provide treatment designed to meet their needs. Together with the rest of the team at the HR Hoover Cancer Center, I will develop a treatment plan tailored to each patient’s specific illness, and I will guide them through their journey with compassion.” Catherine O’Brien, MD

Dr. Catherine O’Brien is a highly accomplished oncology specialist who combines leading-edge care with careful consideration of each patient’s needs. She has been recognized for excellence throughout her career.

Dr. O’Brien is board-certified in hematology and medical oncology. She is a member of the American Society of Clinical Oncology, the American Society of Hematology, and is on the Board of Directors for Willamette Valley Medical Center.

Catherine grew up in Northern California and earned a degree in managerial economics from the University of California, Davis. When she is not working, Dr. O’Brien’s interests include cooking, hiking, photography and traveling.

Catherine O’Brien MD is certified by the American Board of Internal Medicine in:

  • Oncology (cancer)
  • Hematology (blood disorders)