J. Isabelle Choi, MD

Radiation Oncologist

My Role at MSK

Areas of Expertise

Conditions I Treat

Breast cancers and conditions
Gastrointestinal cancers and conditions

My Specialties

Proton Therapy

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About Me

What I Do at MSK

Assistant Attending Radiation Oncologist

My Role at MSK

A radiation oncologist is a cancer doctor with special training in using radiation therapy (RT) to treat cancer with radiation.

Conditions I Treat

Breast cancers and conditions
Gastrointestinal cancers and conditions

My Specialties

Proton Therapy

Education

MD, University of Texas (Health Science Center at San Antonio)

Residencies

Radiation Oncology - Kaiser Permanente, Los Angeles Medical Center

Awards and Honors

40 under 40 Electee, Crain’s New York Business (2023)

Board Certifications

Radiation Oncology

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

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Aetna Medicare Advantage (MTA and NYC retirees only)

In Network Coverage Type
PPO

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Anthem BCBS and other BCBS licensee plans

In Network Coverage Type
PPO, POS, EPO, HMO

See updates

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Anthem BCBS Health Plus

In Network Coverage Type
HMO

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Anthem Blue Cross Medicare Advantage

In Network Coverage Type
PPO, HMO, DSN

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Blue Cross Blue Shield Federal Employee Program

In Network Coverage Type
HMO, PPO

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Blue Cross Blue Shield states outside of NY/NJ

In Network Coverage Type
HMO, EPO PPO, POS

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Carrum Health

In Network Coverage Type
Supplemental

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Cigna

In Network Coverage Type
PPO, POS, HMO

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Connecticare

In Network Coverage Type
POS, EPO, HMO

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Emblem

In Network Coverage Type
PPO, POS, EPO, HMO

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

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Emblem Essential

In Network Coverage Type
HMO

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

In Network Coverage Type
PPO, HMO

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Empire Essential

In Network Coverage Type
HMO

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

In Network Coverage Type
PPO

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Fidelis

In Network Coverage Type
HMO, EPO

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

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Fidelis Managed Medicaid & HARP

In Network Coverage Type
HMO

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Fidelis Medicare Advantage

In Network Coverage Type
HMO

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First Health

In Network Coverage Type
PPO

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Healthfirst

In Network Coverage Type
EPO, HMO, PPO, POS

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

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Healthfirst Managed Medicaid

In Network Coverage Type
HMO

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Healthfirst Medicare Advantage

In Network Coverage Type
HMO, PPO

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Healthsmart

In Network Coverage Type
PPO EPO

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Horizon Blue Cross Blue Shield New Jersey (HMO)

In Network Coverage Type
HMO

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Horizon Blue Cross Blue Shield New Jersey (PPO)

In Network Coverage Type
PPO

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

In Network Coverage Type
EPO

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

In Network Coverage Type
EPO

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Horizon Medicare Advantage

In Network Coverage Type
PPO, HMO

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Husky CT Medicaid

In Network Coverage Type
State Government

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Magnacare

In Network Coverage Type
PPO, POS, EPO

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Straight NJ Medicaid

In Network Coverage Type
State Government

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Straight NY Medicaid

In Network Coverage Type
State Government

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Medicare Part A&B (traditional Medicare)

In Network Coverage Type
Federal Government

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Multiplan/Beech Street/PHCS

In Network Coverage Type
Supplemental

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MVP

In Network Coverage Type
PPO/OAP

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Non-Participating Plans with Out of Network Benefits

In Network Coverage Type
PPO, POS, EPO, HMO

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NYC Medicare Advantage Plus for City Employees

In Network Coverage Type
TBD

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Oscar

In Network Coverage Type
HMO/EPO

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Oxford

In Network Coverage Type
PPO, EPO

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World Trade Center Health Program (WTC)

In Network Coverage Type
State Government

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Qualcare

In Network Coverage Type
PPO, POS, HMO

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Tricare

In Network Coverage Type
PPO, HMO

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UMR

In Network Coverage Type
PPO, POS

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United Healthcare

In Network Coverage Type
PPO, POS, HMO

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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.

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New Patients

Scheduling an appointment is easy. Click or call 800-525-2225— we’re available 24 hours a day, 7 days a week

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Current Patients

Request an appointment by logging on to MyMSK or calling your doctor’s office. If you aren’t registered for MyMSK, call 646-227-2593 for your Enrollment ID.

Contact and Location

Dr. Choi sees patients at one location.

Office Phone

646-449-1997

Location

New York, NY

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 External Beam Radiotherapy Service, Manhattan doctors

See all Proton Therapy doctors

Clinical Trials

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. Choi’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