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Niamh M. Keegan, MBBCh BAO

Genitourinary Medical Oncologist

Areas of Expertise

Conditions I Treat

  • Prostate cancer and conditions
  • Bladder cancer
  • Kidney (renal cell) cancer and conditions

My Specialties

  • Immunotherapy
  • Clinical trials
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Dr. Keegan's Office Information
Languages: English
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Get to Know Me

I am a medical oncologist specializing in the care of people with genitourinary (GU) cancers (prostate, bladder, kidney, and testicular cancer). At Memorial Sloan Kettering Cancer Center (MSK), I work closely with an expert team of surgeons, radiation oncologists, pathologists, radiologists, nurses, and supportive care specialists to develop a personalized care plan for each patient.

This provider is part of a team that was ranked #1 in the nation for Urology Cancer Care this year by U.S. News & World Report.

I believe in taking a team-based approach to cancer treatment that involves not only my MSK colleagues, but also my patients. I partner with patients to understand their unique needs and preferences. Together, we aim to achieve evidence-based care that considers the many dimensions of life impacted by cancer and its treatment.

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I am passionate about improving our understanding of GU cancer and developing new interventions through clinical trials. In addition to standard-of-care treatment options, our team provides access to emerging therapies through promising and innovative clinical trials delivered closer to home at MSK’s locations in New York’s Westchester and Nassau counties. Our team also works on studies that seek to better comprehend how specific cancer therapies will affect patients. This includes efforts to identify early indicators of treatment sensitivity (treatment that is likely to be effective) and resistance that can be determined before treatment begins to support more accurate treatment selection.

I pursued a career in medical oncology because I believe it represents the fusion of commitment to patient-centered care, evidence-based practice, and the relentless pursuit of scientific innovation. After completing my training in medical oncology, I pursued advanced fellowship training at MSK, with a focus on immunotherapy for GU cancer, translational science in prostate cancer, and prostate cancer therapeutics.

It is a great source of pride for me to care for people with GU cancer and contribute to MSK’s long-established, distinguished leadership in the development of cutting-edge cancer care. At MSK, I have the privilege of caring for patients alongside extraordinary mentors and colleagues, who share my goal of delivering individualized care of the highest quality.

What I Do at MSK

A genitourinary (jeh-nih-toh-YOOR-ih-nayr-ee) medical oncologist is a cancer doctor who specializes in genitourinary (GU) cancers. This includes bladder, kidney, penis, prostate, and testicular cancers.

  • Assistant Attending Physician
Areas of Expertise

Conditions I Treat

  • Prostate cancer and conditions
  • Bladder cancer
  • Kidney (renal cell) cancer and conditions
  • Testicular cancer

My Specialties

  • Immunotherapy
  • Clinical trials
Education & Honors

Education

  • MBBCh BAO (Medicine), University of Dublin, Trinity College

Residencies

  • General Internal Medicine - Royal College of Physicians of Ireland

Fellowships

  • Medical Oncology - Royal College of Physicians of Ireland
  • Advanced Oncology - Memorial Sloan Kettering Cancer Center
  • Special Fellowship (Prostate Cancer and Biomarker Development) – Memorial Sloan Kettering Cancer Center

Board Certifications

  • Internal Medicine
  • Medical Oncology (Ireland and Europe)

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.

Aetna

In Network Coverage Type
HMO, EPO PPO, POS, Transplant

Aetna Medicare Advantage (MTA and NYC retirees only)

In Network Coverage Type
PPO

Anthem BCBS and other BCBS licensee plans

In Network Coverage Type
PPO, POS, EPO, HMO

See updates

Anthem BCBS Health Plus

In Network Coverage Type
HMO

See updates

Blue Cross Blue Shield Federal Employee Program

In Network Coverage Type
HMO, PPO

See updates

Blue Cross Blue Shield states outside of NY/NJ

In Network Coverage Type
HMO, EPO PPO, POS

See updates

Carrum Health

In Network Coverage Type
Supplemental

Cigna

In Network Coverage Type
PPO, POS, HMO

Connecticare

In Network Coverage Type
POS, EPO, HMO

First Health

In Network Coverage Type
PPO

Straight NJ Medicaid

In Network Coverage Type
State Government

Straight NY Medicaid

In Network Coverage Type
State Government

Emblem

In Network Coverage Type
PPO, POS, EPO, HMO

Offers a qualified health plan from the Health Insurance Marketplace. Call Emblem to learn more.

Emblem Essential

In Network Coverage Type
HMO

Emblem Medicare Advantage (Medicare Choice PPO Network and VIP Prime Network Only)

In Network Coverage Type
PPO, HMO

Empire Essential

In Network Coverage Type
HMO

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

In Network Coverage Type
PPO

See updates

Fidelis

In Network Coverage Type
HMO, EPO

Offers a qualified health plan from the Health Insurance Marketplace. Call Fidelis to learn more.

Fidelis Managed Medicaid & HARP

In Network Coverage Type
HMO

Fidelis Medicare Advantage

In Network Coverage Type
HMO

Healthfirst

In Network Coverage Type
EPO, HMO, PPO, POS

Offers a qualified health plan from the Health Insurance Marketplace. Call Healthfirst to learn more.

Healthfirst Managed Medicaid

In Network Coverage Type
HMO

Healthfirst Medicare Advantage

In Network Coverage Type
HMO, PPO

Healthsmart

In Network Coverage Type
PPO EPO

Horizon Blue Cross Blue Shield New Jersey (HMO)

In Network Coverage Type
HMO

See updates

Horizon Blue Cross Blue Shield New Jersey (PPO)

In Network Coverage Type
PPO

See updates

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

In Network Coverage Type
EPO

See updates

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

In Network Coverage Type
EPO

See updates

Horizon Medicare Advantage

In Network Coverage Type
PPO, HMO

Husky CT Medicaid

In Network Coverage Type
State Government

Magnacare

In Network Coverage Type
PPO, POS, EPO

Medicare Part A&B (traditional Medicare)

In Network Coverage Type
Federal Government

Metroplus

In Network Coverage Type
HMO

City Employee Health Plans (Gold and Gold Care)

Multiplan/Beech Street/PHCS

In Network Coverage Type
Supplemental

MVP

In Network Coverage Type
PPO/OAP

Non-Participating Plans with Out of Network Benefits

In Network Coverage Type
PPO, POS, EPO, HMO

NYC Medicare Advantage Plus for City Employees

In Network Coverage Type
TBD

Oscar

In Network Coverage Type
HMO/EPO

Oxford

In Network Coverage Type
PPO, EPO

World Trade Center Health Program (WTC)

In Network Coverage Type
State Government

Qualcare

In Network Coverage Type
PPO, POS, HMO

Tricare

In Network Coverage Type
PPO, HMO

UMR

In Network Coverage Type
PPO, POS

United Healthcare

In Network Coverage Type
PPO, POS, HMO

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

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Current Patients
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Contact and Location

Dr. Keegan sees patients at two locations.

Office Phone
Location
Uniondale, NY
West Harrison, NY
Memorial Sloan Kettering Nassau
1101 Hempstead Turnpike Uniondale NY 11553
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Memorial Sloan Kettering Westchester
500 Westchester Avenue West Harrison NY 10604
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Looking to see a doctor at a different location? See all MSK locations.

Clinical Trials

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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. Keegan’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.

Niamh M. Keegan discloses the following relationships and financial interests:

No disclosures meeting criteria for time period


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 a complement to other publicly reported data and 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, 2023 through disclosure submission in spring 2024). 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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