/content/dam/www/people-profile-photos/p/mary-beth-percival/provider-mary-beth-percival-directory-1x.jpg
/content/dam/www/people-profile-photos/p/mary-beth-percival/provider-mary-beth-percival-directory-2x.jpg
Percival
Mary-Elizabeth M. Percival, MD
Top Doctor icon

Mary-Elizabeth M. Percival, MD

Hematology-Oncology

  • Physician, Fred Hutch
  • Associate Professor, Clinical Research Division, Fred Hutch
  • Affiliate Investigator, Translational Science and Therapeutics Division, Fred Hutch
  • Associate Professor, Division of Hematology and Oncology, University of Washington School of Medicine

About 

Dr. Mary-Elizabeth M. Percival is a board-certified hematologist-oncologist and researcher at Fred Hutch who treats patients with leukemia and disorders that affect blood-cell formation, such as myelodysplastic syndrome.  


Background

Dr. Percival’s research focuses on the development of early phase clinical trials for patients with acute myeloid leukemia (AML) to test the effectiveness of new drugs and new combinations of drugs. Dr. Percival is also interested in epidemiological research to better understand the factors that affect survival and outcomes for AML patients. 

Area of Clinical Practice 
Hematologic malignancies, leukemia, myelodysplastic syndrome, myeloproliferative neoplasms 


“I am part of a skilled team of nurses, nurse practitioners and other staff committed to helping you persevere through the difficult moments of cancer diagnosis and treatment.”

— Dr. Percival


What influenced your decision to pursue medicine?

I grew up in a household with two physicians; my mother is a hematologist-oncologist and my father is an endocrinologist. It sometimes seemed like my parents spoke in their own special language when they would share stories about work with one another. I was always intrigued by their conversations and longed to be a part of them. What also appealed to me was observing their dedication to their patients. I, too, wanted to be able to able to help guide people through a trying time in their lives. Once I decided to study medicine, I knew that, like my mother, I wanted to work in an academic setting like Fred Hutch, a place where I could make contributions on multiple fronts through patient care, teaching and research.

What do you think is helpful for patients to know about dealing with a challenging diagnosis?

Being diagnosed with a cancer like leukemia or a similar disease can feel like a roller coaster ride. I encourage patients and families to expect the unexpected. Setbacks may happen along the way; fevers, rashes or other symptoms may suddenly appear that necessitate a hospital stay or a shift in the treatment plan. As frustrating and unnerving as these moments can be, it’s important to put them in perspective. Frequently, these setbacks are small blips on the way toward recovery. I am part of a skilled team of nurses, nurse practitioners and other staff committed to helping you persevere through the difficult moments of cancer diagnosis and treatment.

Diseases Treated

Languages

English

Education and Experience

MS, Stanford University School of Medicine

Fellowship, Hematology-Oncology, Stanford University School of Medicine

Residency, Internal Medicine, University of California, San Francisco

MD, Stanford University

BA, Biochemical Sciences, Harvard University

Board Certification

Medical Oncology, 2015; Hematology, 2014; Internal Medicine, 2010; American Board of Internal Medicine

Awards

Seattle Magazine's 2025 Top Doctors Award
Dr. Percival has received this peer-nominated award for exceptional patient care.

Clinical Trials

We make promising new treatments available to you through studies called clinical trials led by Fred Hutch physicians and researchers. Many of these trials at Fred Hutch have led to FDA-approved treatments and have improved standards of care globally. Together, you and your physician can decide if a study is right for you.

Find a Clinical Trial Led by Dr. Percival

Publications

Many of our Fred Hutch physicians and researchers conduct ongoing research to improve standards of patient care. Their work is evaluated by others in their field and selected for publication to the United States National Library of Medicine, the largest medical library in the world. See scientific papers this Fred Hutch physician has written.

View Dr. Percival's Publications

Your Care Team

At Fred Hutch, you receive care from a team of providers with extensive experience in your disease. Your team includes physicians, a patient care coordinator, a registered nurse, an advanced practice provider and others, based on your needs. You also have access to experts like registered dietitians, social workers, acupuncturists, psychiatrists and more who specialize in supporting people with cancer or blood disorders. 

Insurance

Fred Hutch accepts most national private health insurance plans as well as Medicare. We also accept Medicaid for people from Washington, Alaska, Montana and Idaho. We are working to ensure that everyone, no matter what their financial situation, has access to the care they need.

Stories

All news
ASCO Young Investigator Award winners showcase the breadth and depth of Fred Hutch research Hematology-oncology fellows and faculty receive $50,000 each toward early-career projects May 28, 2026
Alexes Harris January 1, 2018

Contact Information

206.606.1320

206.606.2049