Memorial Sloan Kettering Radiation Oncologist Simon N. Powell

Simon N. Powell, MD, PhD, FRCP

Radiation Oncologist

Titles

Chair, Department of Radiation Oncology; Enid A. Haupt Chair in Radiation Oncology

Clinical Expertise

Radiation Oncology; Breast Cancer

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Monday through Friday, 8:00 a.m. to 6:00 p.m., (Eastern time)
Accepted Insurance Providers

Dr. Powell accepts the following list of insurance providers. Select your insurance provider to see more details.

Aetna

Payor Type: Commercial
In Network Coverage Type(s): HMO, EPO PPO, POS, Transplant

Aetna Medicare Advantage (City of NY retirees only, starting 7/1/23)

Payor Type:
In Network Coverage Type(s): PPO

Blue Cross Blue Shield Federal Employee Program

Payor Type: Commercial
In Network Coverage Type(s): HMO, PPO

Blue Cross Blue Shield New York

Payor Type: Commercial
In Network Coverage Type(s): PPO, POS, EPO, HMO

Blue Cross Blue Shield states outside of NY/NJ

Payor Type: Commercial
In Network Coverage Type(s): HMO, EPO PPO, POS

Blue Cross Health Plus

Payor Type: Medicaid/Managed Medicaid
In Network Coverage Type(s): HMO

Carrum Health

Payor Type: Commercial
In Network Coverage Type(s): Supplemental

Cigna

Payor Type: Commercial
In Network Coverage Type(s): PPO, POS, HMO

Connecticare

Payor Type: Commercial
In Network Coverage Type(s): POS, EPO, HMO

Emblem

Payor Type: Commercial
In Network Coverage Type(s): PPO, POS, EPO, HMO

Emblem Essential

Payor Type: Medicaid/Managed Medicaid
In Network Coverage Type(s): HMO

Emblem Medicare Advantage

Payor Type:
In Network Coverage Type(s): PPO, HMO

Empire Blue Cross Medicare Advantage

Payor Type:
In Network Coverage Type(s): PPO, HMO, DSN

Empire Essential

Payor Type: Medicaid/Managed Medicaid
In Network Coverage Type(s): HMO

Empire Plan / NYSHIP (Blue Cross/UnitedHealthcare split plan)

Payor Type: Commercial
In Network Coverage Type(s): PPO

Fidelis

Payor Type: Commercial
In Network Coverage Type(s): HMO, EPO

Fidelis Managed Medicaid & HARP

Payor Type: Medicaid/Managed Medicaid
In Network Coverage Type(s): HMO

Fidelis Medicare Advantage

Payor Type:
In Network Coverage Type(s): HMO

First Health

Payor Type:
In Network Coverage Type(s): PPO

Healthfirst

Payor Type: Commercial
In Network Coverage Type(s): EPO, HMO, PPO, POS

Healthfirst Managed Medicaid

Payor Type: Medicaid/Managed Medicaid
In Network Coverage Type(s): HMO

Healthfirst Medicare Advantage

Payor Type:
In Network Coverage Type(s): HMO, PPO

Healthsmart

Payor Type: Commercial
In Network Coverage Type(s): PPO EPO

Horizon Blue Cross Blue Shield New Jersey (HMO)

Payor Type: Commercial
In Network Coverage Type(s): HMO

Horizon Blue Cross Blue Shield New Jersey (PPO)

Payor Type: Commercial
In Network Coverage Type(s): PPO

Horizon Blue Cross Blue Shield New Jersey Omnia Tier I (EPO)

Payor Type: Commercial
In Network Coverage Type(s): EPO

Horizon Blue Cross Blue Shield New Jersey Omnia Tier II (EPO)

Payor Type: Commercial
In Network Coverage Type(s): EPO

Horizon Medicare Advantage

Payor Type:
In Network Coverage Type(s): PPO, HMO

Husky CT Medicaid

Payor Type: Medicaid/Managed Medicaid
In Network Coverage Type(s): State Government

Magnacare

Payor Type: Commercial
In Network Coverage Type(s): PPO, POS, EPO

Medicare Part A&B (traditional Medicare)

Payor Type:
In Network Coverage Type(s): Federal Government

Multiplan/Beech Street/PHCS

Payor Type: Commercial
In Network Coverage Type(s): Supplemental

MVP

Payor Type: Commercial
In Network Coverage Type(s): PPO/OAP

Non-Participating Plans with Out of Network Benefits

Payor Type: Other
In Network Coverage Type(s): PPO, POS, EPO, HMO

NYC Medicare Advantage Plus for City Employees

Payor Type:
In Network Coverage Type(s): TBD

Oscar

Payor Type: Commercial
In Network Coverage Type(s): HMO/EPO

Oxford

Payor Type: Commercial
In Network Coverage Type(s): PPO, EPO

Qualcare

Payor Type: Commercial
In Network Coverage Type(s): PPO, POS, HMO

Straight NJ Medicaid

Payor Type: Medicaid/Managed Medicaid
In Network Coverage Type(s): State Government

Straight NY Medicaid

Payor Type: Medicaid/Managed Medicaid
In Network Coverage Type(s): State Government

Tricare

Payor Type: Commercial
In Network Coverage Type(s): PPO, HMO

UMR

Payor Type: Commercial
In Network Coverage Type(s): PPO, POS

United Healthcare

Payor Type: Commercial
In Network Coverage Type(s): PPO, POS, HMO

World Trade Center Health Program (WTC)

Payor Type: Commercial
In Network Coverage Type(s): State Government

Contact and Location

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Memorial Sloan Kettering has locations throughout New York City, Long Island, New Jersey, and Westchester. These locations offer many services, including screening, chemotherapy, and medical testing.

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About Me

Education

MBBS, University of London

Residencies

Medicine - University of London Teaching Hospitals

Fellowships

Clinical Oncology - Royal Marsden Hospital; Radiation Oncology - Harvard Medical School

Board Certifications

Radiation Oncology; Internal Medicine (UK)

I am a radiation oncologist who cares for people with breast cancer. I am Chair of the Department of Radiation Oncology and have been practicing medicine for 35 years. I see approximately 200 new breast cancer patients each year at Memorial Sloan Kettering in Manhattan.

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When patients come to see me, they are worried about whether we can get rid of their cancer. Many patients read about their diagnosis on the internet, and the information they find can be very scary. I always make it a priority to answer all of my patients’ questions so that they feel reassured. I want them to know that they are getting the best care possible.

My research is focused on breast cancer. I have received funding from the National Institutes of Health since 1992 and am an expert in understanding how DNA repair genes like BRCA1 and BRCA2 work to fix DNA damage, as well as how a person’s genetics may influence his or her response to radiation therapy.   

 At MSK, we are leading the way in the use of advanced radiation techniques to ensure our patients have the best outcomes possible. For our early-stage breast cancer patients, we are using hypofractionated whole-breast irradiation. This means patients are receiving fewer total treatment sessions in a shorter time period, with a slightly higher dose given each treatment day. We also have a robust delivery system for partial breast irradiation. We now deliver treatment once per day, which helps our patients tolerate their treatment better.

I have experience treating people with recurrent or metastatic triple-negative breast cancer using radiation in combination with chemotherapy, targeted therapies, and immunotherapies.

For some people, breast cancer treatment can negatively affect the heart. At MSK, we have a program dedicated to assessing this problem. We are leaders in the field of deep inspiration breath-hold techniques, which can help lessen the cardiac side effects for our breast cancer patients. We are also using proton therapy to target tumors more precisely, which can reduce the risk of other treatment-related side effects.

I am a member of advisory boards for several cancer centers in the US and abroad, including the Netherlands Cancer Institute, Winship Cancer Institute of Emory University, University of Michigan Cancer Center, and the University of Florida Health Cancer Center.

In my free time, I enjoy theater, opera, ballet, country-specific versions of history, football, American football, and golf.

I always make it a priority to answer all of my patients’ questions so that they feel reassured. I want them to know that they are getting the best care possible.

-Dr. Powell

Awards and Honors

  • Castle Connolly: America's Top Doctors (2023)
  • Castle Connolly: New York Magazine Top Doctors (2016-2020)
  • Top Doctors New York Metro Area
  • Boston Top Doctors
  • St. Louis Top Doctors

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.

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Clinical Trials

Research and Publications

My research is focused on breast cancer. I have received funding from the National Institutes of Health since 1992 and am an expert in understanding how DNA repair genes like BRCA1 and BRCA2 work to fix DNA damage, as well as how a person’s genetics may influence his or her response to radiation therapy.

View Dr. Powell's Lab

Publications on PubMed

Visit PubMed for a full listing of Dr. Powell’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

Disclosures

Doctors and faculty members often work with pharmaceutical, device, biotechnology, and life sciences companies, and other organizations outside of MSK, to find safe and effective cancer treatments, to improve patient care, and to educate the health care community.

MSK requires doctors and faculty members to report (“disclose”) the relationships and financial interests they have with external entities. As a commitment to transparency with our community, we make that information available to the public.

Simon N. Powell discloses the following relationships and financial interests:

  • PharmaPier US LLC
    Provision of Services (uncompensated)
  • Rain Therapeutics Inc.
    Provision of Services
  • Varian Medical Systems
    Provision of Services

If you’re a patient at MSK and would like more information about your doctor’s external relationships, please talk with your doctor.

The information published here is for a specific annual disclosure period. There may be differences between information on this and other public sites as a result of different reporting periods and/or the various ways relationships and financial interests are categorized by organizations that publish such data.


This page and data include information for a specific MSK annual disclosure period (January 1, 2021 through disclosure submission in spring 2022). This data reflects interests that may or may not still exist. This data is updated annually.

Learn more about MSK’s COI policies here. For questions regarding MSK’s COI-related policies and procedures, email MSK’s Compliance Office at [email protected].


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