Memorial Sloan Kettering medical oncologist Luis Diaz

Luis Diaz Jr., MD

Gastrointestinal Oncologist

My Role at MSK

Areas of Expertise

My Specialties

  • Colorectal Cancer
  • Pancreatic Cancer
  • Bile Duct Cancer

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About Me

What I Do at MSK
  • Head of the Division of Solid Tumor Oncology
  • Grayer Family Chair
Get To Know Me

I am the Head of the Division of Solid Tumor Oncology in Memorial Sloan Kettering Cancer Center’s Department of Medicine. I am also a medical oncologist who cares for people with advanced colon cancer and pancreatic cancer and a researcher applying cancer genetics to find new ways to diagnose and treat the disease.

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My research focuses on applied cancer genetics. The more we learn about a tumor’s makeup, the more precise targets and diagnostics we can create against it — including immunotherapy treatments, which harness the body’s immune system to fight cancer. I am also very interested in how we can use cancer genetics to screen for, detect, diagnose, and monitor cancer by looking at DNA in tumor tissue and by using liquid biopsies.

With my colleagues, I am working to develop a “molecular pap smear” that is able to diagnose early-stage ovarian cancer and endometrial cancer based on these genetic markers — a crucial advance that would mean we could catch more instances of these cancers and begin treating them as quickly as possible. The test is currently in clinical trials. My hope is that we will start seeing this as part of the standard of care within the next few years.

As part of my role as Head of Solid Tumor Oncology, I am also working to improve mentorship for our young scientists and communication between researchers and departments across MSK. I am also involved in projects to improve our patients’ experience as well as their access to our unmatched cancer care.

I strive to support my patients at every step of the way throughout their treatment. The patients I see are often facing a lethal diagnosis. It’s important that they feel as though, along with the rest of their treatment team, we’re all in this together. 

My Role at MSK

A gastrointestinal (GAS-troh-in-TES-tih-nul) oncologist is a cancer doctor with special training in the gastrointestinal (GI) system. This includes anal, colorectal, esophageal, gastric (stomach), liver, and pancreatic cancers, as well as GI stromal tumors and neuroendocrine tumors.

Areas of Expertise

My Specialties

  • Colorectal Cancer
  • Pancreatic Cancer
  • Bile Duct Cancer
  • Neuroendocrine Tumors of the GI Tract
Education & Honors

Education

  • MD, University of Michigan

Residencies

  • The Johns Hopkins School of Medicine

Awards and Honors

  • Elected Member, National Academy of Medicine (2023)
  • AACR Team Science Award (2013, 2014, 2017)

Fellowships

  • The Johns Hopkins School of Medicine

Board Certifications

  • Medical 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

Aetna Medicare Advantage (MTA retirees only)

In Network Coverage Type
PPO

Blue Cross Blue Shield Federal Employee Program

In Network Coverage Type
HMO, PPO

Blue Cross Blue Shield New York

In Network Coverage Type
PPO, POS, EPO, HMO

Blue Cross Blue Shield states outside of NY/NJ

In Network Coverage Type
HMO, EPO PPO, POS

Blue Cross Health Plus

In Network Coverage Type
HMO

Carrum Health

In Network Coverage Type
Supplemental

Cigna

In Network Coverage Type
PPO, POS, HMO

MSK has a tentative agreement with Cigna to continue coverage in 2024.

Connecticare

In Network Coverage Type
POS, EPO, HMO

Emblem

In Network Coverage Type
PPO, POS, EPO, HMO

Emblem Essential

In Network Coverage Type
HMO

Emblem Medicare Advantage

In Network Coverage Type
PPO, HMO

Empire Blue Cross Medicare Advantage

In Network Coverage Type
PPO, HMO, DSN

Empire Essential

In Network Coverage Type
HMO

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

In Network Coverage Type
PPO

Fidelis

In Network Coverage Type
HMO, EPO

Fidelis Managed Medicaid & HARP

In Network Coverage Type
HMO

Fidelis Medicare Advantage

In Network Coverage Type
HMO

First Health

In Network Coverage Type
PPO

Healthfirst

In Network Coverage Type
EPO, HMO, PPO, POS

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

Horizon Blue Cross Blue Shield New Jersey (PPO)

In Network Coverage Type
PPO

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

In Network Coverage Type
EPO

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

In Network Coverage Type
EPO

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

Straight NJ Medicaid

In Network Coverage Type
State Government

Straight NY Medicaid

In Network Coverage Type
State Government

Medicare Part A&B (traditional Medicare)

In Network Coverage Type
Federal Government

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.

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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. Diaz Jr. sees patients at one location.

Office Phone
Location
New York, NY
1275 York Avenue 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 Gastrointestinal Oncology 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. Diaz Jr.’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.

Luis Diaz Jr. discloses the following relationships and financial interests:

  • ChromaCode
    Equity
  • Delfi Diagnostics, Inc.
    Equity; Professional Services and Activities (Uncompensated)
  • Epitope
    Equity; Fiduciary Role / Position
  • Exact Sciences Corporation
    Equity
  • Innovatus Capital Partners, LLC
    Professional Services and Activities
  • Johns Hopkins University School of Medicine
    Intellectual Property Rights
  • Jounce Therapeutics
    Equity
  • Kinnate Biopharma Inc.
    Equity; Professional Services and Activities
  • LabCorp
    Equity
  • Neophore
    Equity; Professional Services and Activities (Uncompensated)
  • Personal Genome Diagnostics
    Equity
  • Quest Diagnostics
    Equity; Fiduciary Role / Position
  • Seer Biosciences
    Equity; Professional Services and Activities
  • Thrive
    Equity
  • Zydecom
    Equity

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, 2022 through disclosure submission in spring 2023). 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].


View all disclosures