Phaedon Zavras

Phaedon D. Zavras, MD

Areas of Expertise

Conditions I Treat

  • Breast cancers and conditions

My Specialties

  • Clinical trials
  • Immunotherapy
Request an Appointment
Our Care Advisors can answer many of your questions. They will connect you with the best healthcare provider for your needs.

Get to Know Me

I am a board-certified medical oncologist who is an expert in the care of people with breast cancer. I see patients at the Evelyn H. Lauder Breast Center in Manhattan and at MSK Commack on Long Island.

Along with experts across different teams, including pathologists, radiologists, breast surgeons, and radiation oncologists, I aim to provide the highest quality care possible to patients. I make sure that I create treatment plans based on the needs of each patient. My goal as a breast cancer specialist is to help patients and their families navigate this journey together and ensure they receive the best treatment possible.

In my clinical practice, I provide tailored care to my patients. I believe that every patient’s story extends far beyond their diagnosis. This is why I make it a priority to understand their experiences, values, and goals. I aim to make sure that treatment decisions are not only guided by the latest advances in breast cancer research but are also aligned with what matters most to each patient and their family.

My goal for every visit is for patients to clearly understand their diagnosis and treatment options, and what lies ahead. It is a privilege to care for people during such a challenging time, and I deeply value the meaningful, lasting relationships that form as we walk this path together.

As a clinical investigator, I lead trials that examine the latest therapies for breast cancer. My research mainly focuses on improving the results of immunotherapy-based treatments for breast cancer. These are treatments that harness patients’ own immune system to fight cancer.

Outside of work, I enjoy spending quality time with friends and family, playing tennis, and traveling the world to experience new cultures and cuisines. 

What I Do at MSK

I'm a breast medical oncologist, which is a cancer doctor who specializes in breast cancer.

  • Assistant Attending Physician
Areas of Expertise

Conditions I Treat

  • Breast cancers and conditions

My Specialties

  • Clinical trials
  • Immunotherapy
Education & Honors

Education

  • MD, National and Kapodistrian University of Athens, Greece

Residencies

  • Internal Medicine, Jacobi Medical Center, Albert Einstein College of Medicine

Fellowships

  • Medical Oncology, Johns Hopkins University

Board Certifications

  • Medical Oncology
  • Internal Medicine

Awards and Honors

  • Young Investigator Award, American Society of Clinical Oncology (ASCO)/Conquer Cancer Foundation (2025)
  • ASCO/AACR Methods in Clinical Cancer Research Workshop (2024)

Insurance Information

Understanding your insurance options is an important part of managing your cancer care. We have relationships with many common healthcare providers and plans.

Don't see your carrier or plan? We can help you understand your coverage.

If you don't have health insurance or are worried that your care may not be fully covered, our financial assistance programs may be able to help.

If you have questions about insurance, call us at 646-497-9176.

Make an Appointment

Current Patients
Request an appointment by calling your Care Team or messaging them in MSK MyChart.

Contact and Location

Office Phone
Location
New York, NY
Commack, NY
300 East 66th Street Floors 1 - 4 New York NY 10065

Looking to see a doctor at a different location? See all MSK locations.

Colleagues

Doctors at Memorial Sloan Kettering work as teams, with specialists from all different areas. This allows us to consider all your needs together, and to give you the best possible care.

See all Breast Medicine Service doctors

Clinical Trials

Smiling doctors in the lab
Find a Clinical Trial for You

Memorial Sloan Kettering's doctors and scientists are constantly developing new treatments for cancer. MSK is typically running hundreds of clinical trials at a given time.

You may be able to participate in a clinical trial even if you are new to MSK. Search our online directory to find trial information and see more about who can participate.

Search clinical trials

Research and Publications

Publications on PubMed

Visit PubMed for a full listing of Dr. Zavras’s journal articles. Pubmed is an online index of research papers and other articles from the US National Library of Medicine and the National Institutes of Health.

See all on PubMed