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Memorial Sloan Kettering pediatric oncologist Leonard Wexler

Leonard H. Wexler, MD

Pediatric Hematologist-Oncologist

My Role at MSK

Areas of Expertise

My Specialties

  • Pediatric Oncology
  • Bone and Soft Tissue Sarcomas
  • Anthracycline Cardiotoxicity/Cardioprotection
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Dr. Wexler's Office Information
Languages: English

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About Me

What I Do at MSK
  • Attending Pediatrician
Get To Know Me

I am a pediatric oncologist at MSK Kids with a special interest in treating children, adolescents, and young adults with sarcomas of the bone and soft tissues. These are rare tumors — fewer than 2,000 cases are diagnosed in United States each year. I work with a team of oncologists, pediatric and orthopedic surgeons, and radiation therapists to offer unique expertise and treatment options to patients with both newly diagnosed sarcomas and those that came back after previous treatment.

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I co-directed an international study to evaluate the effectiveness of chemotherapy for children with osteosarcoma, a type of bone cancer. I am leading a clinical trial for children with Ewing’s sarcoma in first relapse which is comparing outcomes with chemotherapy alone versus the same chemotherapy combined with a vaccine developed from a patient’s own tumor.

Some of the chemotherapy drugs that we use to treat children may injure heart tissue. I have been involved in the development and assessment of dexrazoxane, a drug we now routinely use to protect heart tissue in children who are receiving doxorubicin as part of their treatment.

To educate the next generation of physicians, I am one of the lead attending physicians on the faculty-fellow team, which is designed to work closely with young doctors who are training in this subspecialty to help them learn how best to identify the individual needs of patients and manage the care of children with cancer.

Nationally, I have served on the National Comprehensive Cancer Network committee on fatigue in people with cancer. I also serve on Memorial Sloan Kettering’s fertility preservation committee to develop standards to refer patients for counseling and options.

My colleagues and I at MSK Kids form a team of individuals who extend the same family-centered, holistic philosophy of care to our young adult and adult patients as well as our younger pediatric patients. We try to connect with our patients and their families on a very personal level. Many of us maintain relationships with our patients outside of the hospital. I find great satisfaction in attending major life milestones such as weddings, births, Bar Mitzvahs, and confirmations.

Each year, I volunteer my time to work with children at Camp Simcha, a summer camp for children battling cancer. I find it incredibly rewarding to care for children — they are courageous and indomitable. They just want to finish treatment and go back to being kids who play and go to school. I am amazed at the strength of their families during this time as well, and I am as devoted to helping their children get better as if they were my own.

My Role at MSK

A pediatric hematologist-oncologist is a doctor who treats cancers and blood diseases in children, adolescents and young adults.

Areas of Expertise

My Specialties

  • Pediatric Oncology
  • Bone and Soft Tissue Sarcomas
  • Anthracycline Cardiotoxicity/Cardioprotection
  • Supportive Care
Education & Honors

Education

  • MD, Boston University School of Medicine

Residencies

  • General Pediatrics - Albert Einstein College of Medicine/Montefiore Medical Center

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 (2000-2023)
  • New York Magazine Top Doctors (2005-2009, 2011-2020)

Fellowships

  • Pediatric Hematology/Oncology - National Cancer Institute

Board Certifications

  • Pediatrics
  • Pediatric Hematology-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 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

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.

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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. Wexler sees patients at two locations.

Office Phone
Location
Montvale, NJ
Middletown, NJ
Memorial Sloan Kettering Bergen
225 Summit Avenue Montvale NJ 07645
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Memorial Sloan Kettering Monmouth
480 Red Hill Road Middletown NJ 07748
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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.

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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. Wexler’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.

Leonard H. Wexler discloses the following relationships and financial interests:

  • Treeline Biosciences, Inc.
    Professional Services and Activities
  • US WorldMeds, LLC.
    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 ecoi@mskcc.org.


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