Niamh M. Keegan, MBBCh BAO

Medical Oncologist

Titles

Assistant Attending Physician

Clinical Expertise

Genitourinary Malignancies

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833-920-3234
Monday through Friday, 8:00 a.m. to 6:00 p.m., (Eastern time)
Accepted Insurance Providers

Dr. Keegan 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 9/1/23)

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

Empire Blue Cross Medicare Advantage

Payor Type: Medicare/Medicare Advantage
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: Medicare/Medicare Advantage
In Network Coverage Type(s): HMO

First Health

Payor Type: Medicare/Medicare Advantage
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: Medicare/Medicare Advantage
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: Medicare/Medicare Advantage
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

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

Medicare Part A&B (traditional Medicare)

Payor Type: Medicare/Medicare Advantage
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: Medicare/Medicare Advantage
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

World Trade Center Health Program (WTC)

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

Qualcare

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

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

Contact and Location

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Find a Convenient Location

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.

See all locations

About Me

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)

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

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 Genitourinary Oncology Service doctors

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