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

Ramesh Rengan, MD, PhD

Physician, SCCA Proton Therapy Center
Seattle Cancer Care Alliance
Professor, Division of Medical Oncology
University of Washington School of Medicine
Chair, Department of Radiation Oncology
UW Medicine
Professor, Clinical Research Division
Fred Hutchinson Cancer Research Center
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.

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

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.

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


Clinical trials

We make promising new treatments available to you through studies called clinical trials led by SCCA doctors. Many of these trials at SCCA 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.

Study ID:
ADMIRAL Trial: Adaptive Mediastinal Radiation With Chemo-Immunotherapy
Complete title
ADMIRAL Trial: Adaptive-Dose to Mediastinum with Immunotherapy (Durvalumab MEDI4736) and RAdiation in Locally-Advanced Non-Small Cell Lung Cancer
Study ID:
Image Guided Hypofractionated Radiation Therapy, Nelfinavir Mesylate, Pembrolizumab, Nivolumab and Atezolizumab in Treating Patients With Advanced Melanoma, Lung, or Kidney Cancer
Complete title
ImmunoRad: Stratified Phase II Trial of Image Guided Hypofractionated Radiotherapy with Concurrent Nelfinavir and Immunotherapy in Advanced Melanoma, Lung Cancer, and Renal Cell Carcinoma

Your care team

At SCCA, you receive care from a team of providers with extensive experience in your disease. Your team includes doctors, a team 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 physician and assists with care procedures and treatments.
Team coordinator (TC)
Team coordinator (TC)
Your team coordinator works closely with you and your physician and serves as your scheduler.


SCCA 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