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

Ramesh Rengan, MD, PhD

Fred Hutch
Chair, Department of Radiation Oncology
UW Medicine
Peter Wooton Professor and Chair
UW Medicine and Fred Hutch
Professor, Clinical Research Division
Fred Hutch
Radiation Oncology
“My philosophy is simple: My patients come first. ”
— Dr. Rengan
Why do you practice oncology?

I became a physician because of my patients. Every day, I am inspired by oncology patients’ selflessness, even when faced with a difficult disease. I once cared for a 96-year old patient who voluntarily gave up a treatment slot so that a perfect stranger could coordinate their appointment with chemotherapy. There is nothing more fulfilling than providing care for you, and I am honored to be entrusted with your health.

Chemotherapy Treatment that uses drugs to stop the growth of cancer cells, either by killing the cells or by stopping them from dividing. It may be given alone or with other treatments. Treatment that uses drugs to stop the growth of cancer cells, either by killing the cells or by stopping them from dividing. Chemotherapy may be given by mouth, injection, infusion or on the skin, depending on the type and stage of the cancer being treated. It may be given alone or with other treatments, such as surgery, radiation therapy or biologic therapy.
What is your approach to patient care?

Patient care should be based on a partnership between us, starting from your initial visit through your entire treatment process. Amazing quality care can only come from spending time and truly listening to you. I may have greater medical knowledge about your disease, but you have a far better understanding of your physical and emotional needs. We will get to know each other and tailor your treatment to fit what’s best for you and your lifestyle.

Provider background

Specialty: Radiation Oncology

Area of clinical practice

Thoracic cancers

Radiation oncology

I am passionate about patient care, tumor biology and advanced technologies. Radiation oncology combines these fields while providing new challenges and opportunities for scientific advancement every day. Through the integration of these disciplines, I can provide state-of-the art treatment to you.

In addition to spending time with patients, I am involved in research aimed at making radiation a more effective treatment. Radiation is a potent stimulator of the immune system, and when that potential is targeted properly at the tumor, it can make the tumor function as a vaccine against itself. As a field, we are moving towards individualizing treatments to the biology of specific tumors   and, ideally, the patient. This “biologically directed” anti-cancer treatment is already a reality for several malignancies, including leukemia and lymphoma. In my lifetime, I would like to see this approach integrated across all solid tumors, including lung cancer and melanoma.

Lymphoma Cancer that begins in the cells of the immune system. There are two basic categories of lymphomas: Hodgkin lymphoma and non-Hodgkin lymphomas. Cancer that begins in cells of the immune system. There are two basic categories of lymphomas. One is Hodgkin lymphoma, which is marked by the presence of a type of cell called the Reed-Sternberg cell. The other category is non-Hodgkin lymphomas, which includes a large, diverse group of cancers of immune system cells. Non-Hodgkin lymphomas can be further divided into cancers that have an indolent (slow-growing) course and those that have an aggressive (fast-growing) course. These subtypes behave and respond to treatment differently. Both Hodgkin and non-Hodgkin lymphomas can occur in children and adults, and prognosis and treatment depend on the stage and the type of cancer. Melanoma Cancer that begins in the melanocytes (cells that make the pigment melanin). It may begin in a mole (skin melanoma), but it can also begin in other pigmented tissues, such as the eye or the intestines. Thoracic Having to do with the chest.

Diseases treated

Education, experience and certifications
Medical Degree
University of Michigan Medical School
Memorial Sloan-Kettering Cancer Center
Board Certification
Radiation Oncology, 2007, 2018, American Board of Radiology
PhD, University of Michigan
Seattle Met's 2019 Top Doctors award

Dr. Rengan received this peer-nominated award for his exceptional patient care.

Faculty Teaching Award, Department of Radiation Oncology, University of Washington School of Medicine, 2013-2014


Celebrating 10 Years of Proton Therapy in the Northwest; Proton Therapy Clinical Trials; Newest Team Coordinator, Jenny Dang
Celebrating 10 Years of Proton Therapy in the Northwest; Proton Therapy Clinical Trials; Newest Team Coordinator, Jenny Dang

March 2023 marks the 10th Anniversary of the proton therapy facility. Thank you to all our dedicated patients, doctors and staff who've made this place what it is today. Also, learn more about the ongoing clinical trials our doctors are conducting and meet our newest team coordinator. 


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.


Many of our Fred Hutch doctors conduct ongoing research to improve standards of patient care. Their work is evaluated by other doctors 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 provider has written.

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.


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