Top Doctor Top Doctor
The Top Doctor award is a peer-nominated award for providers who give exceptional care.

Ralph P. Ermoian, MD

Physician
Fred Hutch
Associate Professor, Department of Radiation Oncology; Adjunct Professor, Department of Pediatrics
University of Washington School of Medicine
Physician
Seattle Children's
Specialty:
Radiation Oncology
“One of the things I enjoy most about my specialty are the close relationships I develop with patients and families as well as my professional practice partners. It’s a team effort that results in the best outcomes.”
— Dr. Ermoian
Tell us about an interaction with a patient that has had a significant impact on you.

I once treated a preteen patient who was an extraordinary student. Unfortunately, she had developed a brain tumor that required a significant amount of radiation therapy. While radiation can be a very effective form of treatment, there are several potential long-term side effects to consider. Before moving forward, I had a long discussion with this patient and her family about how radiation therapy  could impact the sharpness of her thinking — and ultimately her academic ambitions. After she completed her course of treatment, her family frequently wrote to me to share how well she was doing. Year after year, they would tell me about how she was still at the top of her class and eventually how she got accepted to an outstanding college. It was so exciting to hear that she was thriving and pursuing her career goals. One of the things I enjoy most about my specialty are the close relationships I develop with patients and families as well as my professional practice partners. It’s a team effort that results in the best outcomes.

Radiation therapy The use of high-energy radiation from X-rays, gamma rays, neutrons, protons and other sources to kill cancer cells and shrink tumors. The use of high-energy radiation from x-rays, gamma rays, neutrons, protons and other sources to kill cancer cells and shrink tumors. Radiation may come from a machine outside the body (external-beam radiation therapy), or it may come from radioactive material placed in the body near cancer cells (internal radiation therapy or brachytherapy). Systemic radiation therapy uses a radioactive substance, such as a radiolabeled monoclonal antibody, that travels in the blood to tissues throughout the body. Side effects A problem that occurs when treatment affects healthy tissues or organs. Some side effects of cancer treatment are nausea, vomiting, fatigue, pain, decreased blood cell counts, hair loss and mouth sores.
Ralph P. Ermoian, MD
What would you like patients and families to know about working with you?

I often tell patients and families that I’m going to expect the best, both in terms of how a tumor will respond to radiation therapy and how a patient will feel while receiving this treatment. Yet, while expecting the best, I also remain vigilant about evaluating for side effects and monitoring for cancer recurrence. My goal is to provide care that’s compassionate, detail-oriented and centered on your medical needs and goals.

Radiation therapy The use of high-energy radiation from X-rays, gamma rays, neutrons, protons and other sources to kill cancer cells and shrink tumors. The use of high-energy radiation from x-rays, gamma rays, neutrons, protons and other sources to kill cancer cells and shrink tumors. Radiation may come from a machine outside the body (external-beam radiation therapy), or it may come from radioactive material placed in the body near cancer cells (internal radiation therapy or brachytherapy). Systemic radiation therapy uses a radioactive substance, such as a radiolabeled monoclonal antibody, that travels in the blood to tissues throughout the body. Recurrence Cancer that has come back, usually after a period during which it could not be detected. It may come back to the same place as the original (primary) tumor or someplace else. Also called recurrent cancer. Side effects A problem that occurs when treatment affects healthy tissues or organs. Some side effects of cancer treatment are nausea, vomiting, fatigue, pain, decreased blood cell counts, hair loss and mouth sores.

Provider background

Specialty: Radiation Oncology

Pediatric malignancies, brain tumors, blood-related cancers requiring stem cell transplantation

I am a board-certified radiation oncologist who specializes in treating children with brain tumors, sarcomas and other forms of cancer. I also provide radiation therapy for adult and pediatric patients who are preparing for a stem cell transplant as well as those seeking palliative treatment (relief for tumor-related symptoms).

My research is focused on examining the outcomes of pediatric patients who receive radiation therapy. I also collaborate with other physicians to develop interventions that minimize the need for very young patients to receive anesthesia during radiation therapy, which can be very disruptive for families. Other research interests include improving the safety of radiation therapy and addressing issues of equity and access to this treatment.

Anesthesia Drugs or other substances that cause a loss of feeling or awareness. This keeps patients from feeling pain during surgery or other procedures. A loss of feeling or awareness caused by drugs or other substances. Anesthesia keeps patients from feeling pain during surgery or other procedures. Local anesthesia is a loss of feeling in one small area of the body, such as the mouth. Regional anesthesia is a loss of feeling in a part of the body, such as an arm or leg. General anesthesia is a loss of feeling and a complete loss of awareness that feels like a very deep sleep. Bone marrow transplant The process of treating disease with high doses of chemotherapy, radiation therapy or both. Bone marrow or peripheral blood stem cells are given after treatment to help the body make more blood cells. The process of treating disease with high doses of chemotherapy, radiation therapy or both. Because this treatment destroys the bone marrow’s ability to produce blood cells, bone marrow or peripheral blood stem cells are given after treatment to help the body make more blood cells. Oncologist A physician who has special training in diagnosing and treating cancer. Some oncologists specialize in a particular type of cancer treatment, such as treating cancer with radiation. A physician who has special training in diagnosing and treating cancer. Some oncologists specialize in a particular type of cancer treatment. For example, a radiation oncologist specializes in treating cancer with radiation. Radiation therapy The use of high-energy radiation from X-rays, gamma rays, neutrons, protons and other sources to kill cancer cells and shrink tumors. The use of high-energy radiation from x-rays, gamma rays, neutrons, protons and other sources to kill cancer cells and shrink tumors. Radiation may come from a machine outside the body (external-beam radiation therapy), or it may come from radioactive material placed in the body near cancer cells (internal radiation therapy or brachytherapy). Systemic radiation therapy uses a radioactive substance, such as a radiolabeled monoclonal antibody, that travels in the blood to tissues throughout the body. Stem cell A cell from which other types of cells develop. For example, blood cells develop from blood-forming stem cells. Symptom A physical or mental problem that a person experiences that may indicate a disease or condition. Symptoms cannot be seen and do not show up on medical tests. A physical or mental problem that a person experiences that may indicate a disease or condition. Symptoms cannot be seen and do not show up on medical tests. Some examples of symptoms are headache, fatigue, nausea and pain.

Diseases treated

Education, experience and certifications
Undergraduate Degree
Stanford University
Medical Degree
University of California, San Francisco
Residency
University of California, San Francisco, Pediatrics; University of Washington, Radiation Oncology
Fellowship
University of California, San Francisco
Board Certification
Pediatrics, 2007; Radiation Oncology, 2012, American Board of Radiology
Other
Internship, Children's Hospital Boston; Teaching Appointment, University of California, Berkeley
Languages
English
Awards
Seattle Met's 2020 Top Doctors Award

Dr. Ermoian has been recognized as a Top Doctor in Seattle Met's annual survey.

Research

Clinical trials

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

Press

Our providers are often asked to give their medical expertise for press and news publications. Read articles by or about this Fred Hutch provider.

Your care team

At Fred Hutch, you receive care from a team of providers with extensive experience in your disease. Your team includes doctors, a patient care coordinator, a registered nurse, an advanced practice provider and others, based on your needs. You also have access to experts like nutritionists, social workers, acupuncturists, psychiatrists and more who specialize in supporting people with cancer or blood disorders.
Registered nurse (RN)
Registered nurse (RN)
Your nurse manages your care alongside your doctor and assists with care procedures and treatments.
Patient care coordinator
Patient care coordinator
Your patient care coordinator works closely with you and your doctor and serves as your scheduler.

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.

For providers