Find an MSK Doctor or Cancer Specialist
Steven M. Horwitz, MD

Steven M. Horwitz, MD

Lymphoma Specialist & Cellular Therapist

My Role at MSK

Areas of Expertise

My Specialties

  • T Cell Lymphomas
  • Cutaneous (Skin) Lymphomas
  • Other non-Hodgkin and Hodgkin Lymphomas
View all
Dr. Horwitz's Office Information
Languages: English
Request an Appointment
Our Care Advisors can answer many of your questions. They will connect you with the best healthcare provider for your needs.
Back to top
English
Share

About Me

What I Do at MSK
  • Endowed Chair, The Nonna’s Garden Foundation Chair, With Gratitude to Memorial Sloan Kettering
Get To Know Me

I am a medical oncologist who focuses on the care of patients with lymphoma, and I have clinical expertise in all types of lymphomas. My research is aimed at developing an improved understanding of new therapies for patients with several less-common types of lymphoma, including T cell lymphomas, cutaneous (skin) lymphomas, Hodgkin disease, and lymphomas in immunosuppressed patients after organ transplant (post-transplant lymphoproliferative disorders or PTLD).

My Role at MSK

A lymphoma specialist is a doctor with special training in diagnosing and treating lymphoma.

A cellular therapy specialist is a doctor with special training in using cell therapies to treat health conditions such as cancer. Therapies can include chimeric antigen receptor (CAR) T cell therapy.

Areas of Expertise

My Specialties

  • T Cell Lymphomas
  • Cutaneous (Skin) Lymphomas
  • Other non-Hodgkin and Hodgkin Lymphomas
Education & Honors

Education

  • MD, Case Western Reserve University

Residencies

  • Internal Medicine - University of Rochester/Strong Memorial Hospital

Awards and Honors

  • Castle Connolly: America’s Top Doctor (2024)
  • Top Doctors New York Metro Area, Castle Connolly (2023)
  • Castle Connolly: America's Top Doctors (2023)
  • Castle Connolly: New York Magazine Top Doctors (2013-2021)

Fellowships

  • Medicine - Stanford University Medical Center

Board Certifications

  • Internal Medicine
  • 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

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

Anthem Blue Cross Medicare Advantage

In Network Coverage Type
PPO, HMO, DSN

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

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

First Health

In Network Coverage Type
PPO

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

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.

Make an Appointment

Women talking
New Patients
Scheduling an appointment is easy. Click or call 646-497-9137— we’re available 24 hours a day, 7 days a week
Make an Appointment
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. Horwitz sees patients at one location.

Office Phone
Location
New York, NY
David H. Koch Center for Cancer Care at Memorial Sloan Kettering Cancer Center
530 East 74th Street New York NY 10021
Get Directions

Looking to see a doctor at a different location? See all MSK locations.

Clinical Trials

Read more
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. Horwitz’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.

Steven M. Horwitz discloses the following relationships and financial interests:

  • Abcuro, Inc.
    Professional Services and Activities
  • Clinical Education Alliance, LLC
    Professional Services and Activities
  • Corvus Pharmaceuticals, Inc.
    Professional Services and Activities
  • CTI BioPharma Corp.
    Professional Services and Activities
  • Cutaneous Lymphoma Foundation
    Fiduciary Role / Position
  • Daiichi Sankyo
    Professional Services and Activities
  • DKMS
    Fiduciary Role / Position
  • Dren Bio
    Professional Services and Activities
  • Farallon Capital Management, L.L.C.
    Professional Services and Activities
  • International Lymphoma Conference
    Professional Services and Activities
  • International Society for Cutaneous Lymphomas
    Fiduciary Role / Position
  • Kyowa Hakko Kirin Pharma
    Professional Services and Activities
  • March Biosciences, Inc.
    Professional Services and Activities (Uncompensated)
  • National Comprehensive Cancer Network
    Fiduciary Role / Position
  • Neovii Pharmaceuticals AG
    Professional Services and Activities (Uncompensated)
  • New York Oncology Hematology
    Professional Services and Activities
  • Ono Pharma
    Professional Services and Activities
  • Pfizer, Inc.
    Professional Services and Activities
  • Physicians' Education Resource
    Professional Services and Activities
  • Seagen
    Professional Services and Activities
  • Society of Hematologic Oncology
    Professional Services and Activities
  • SymBio Pharmaceuticals Limited
    Professional Services and Activities
  • Takeda Pharmaceuticals
    Professional Services and Activities
  • Treeline Biosciences, Inc.
    Professional Services and Activities (Uncompensated)
  • UptoDate
    Professional Services and Activities

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].


View all disclosures

Related topics: