Memorial Sloan Kettering Hematologic Oncologist Jason Lewis

Jason Lewis, DO, PA, FAAP

Pediatric Hematologist-Oncologist & Bone Marrow Transplant Specialist

Areas of Expertise

Conditions I Treat

  • Pediatric cancers
  • Pediatric leukemias
  • Blood, bone marrow, and hematologic cancers and conditions

My Specialties

  • Pediatric cancer care
  • Hematology
View all expertise
Dr. Lewis'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

Get to Know Me

I am a pediatric hematologic oncologist on the MSK Kids team who specializes in the care of cancerous and non-cancerous disorders of the blood and immune systems in children and young adults. In particular, I have treated patients with liver tumors (hepatoblastoma, hepatocellular, and hepatoblastoma mixed liver tumors), acute leukemias, germ cell tumors, Wilms tumor (a type of kidney cancer), sarcomas of the bones and soft tissues, neuroblastoma, Hodgkin and non-Hodgkin lymphomas, aplastic anemia, sickle cell disease, thalassemias, glucose-6-phosphate dehydrogenase (G6PD), hemophilia, and chronic neutropenia.

I chose this field because I enjoy working with young patients and getting to know their families. Having the chance to be a part of someone’s life during a time when they and their family members are in a vulnerable state is the most gratifying part of my job. I treat each patient and family member with respect and compassion to make their experience with us as gentle as it can be.

What I Do at MSK

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

I'm a bone marrow transplant specialist, which is a doctor with special training in bone marrow transplants.

  • Assistant Attending Pediatrician
Areas of Expertise

Conditions I Treat

  • Pediatric cancers
  • Pediatric leukemias
  • Blood, bone marrow, and hematologic cancers and conditions
  • Acute lymphocytic leukemia (ALL)
  • Acute myeloid leukemia (AML)
  • Acute promyelocytic leukemia (APL)
  • Germ cell tumors
  • Wilms' tumor (nephroblastoma)
  • Pediatric sarcomas
  • Soft tissue sarcomas
  • Neuroblastoma
  • Hodgkin lymphoma (Hodgkin’s disease)
  • Non-Hodgkin lymphoma (NHL)

My Specialties

  • Pediatric cancer care
  • Hematology
Education & Honors

Education

  • DO, Lake Erie College of Osteopathic Medicine

Residencies

  • Pediatrics - Robert Wood Johnson

Fellowships

  • Pediatric Hematology Oncology - Hershey Medical Center

Board Certifications

  • Pediatrics

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.

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 800-525-2225— we’re available 24 hours a day, 7 days a week
Make an Appointment
Current Patients
Request an appointment by logging in to MSK MyChart or calling your Care Team. If you are not enrolled in MSK MyChart, ask your Care Team to send you an invitation. You can also go to MSK MyChart and select “Sign up now.”

Contact and Location

Dr. Lewis sees patients at one location.

Location
New York, NY
Memorial Sloan Kettering Cancer Center
1275 York Avenue New York NY 10065
Get Directions

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

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

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.

Jason Lewis discloses the following relationships and financial interests:

No disclosures meeting criteria for time period


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