Jeffrey P. Greenfield, MD, PhD

Jeffrey P. Greenfield, MD, PhD

Pediatric Neurosurgeon

My Role at MSK

Areas of Expertise

My Specialties

  • Pediatric Neurosurgery
  • Pediatric Brain Tumors
  • Neuroendoscopy

Request an Appointment

Our Care Advisors can answer many of your questions. They will connect you with the best healthcare provider for your needs.
English
Share

About Me

What I Do at MSK
  • Associate Attending Neurosurgeon
Get To Know Me

I am pediatric neurosurgeon on the MSK Kids team who has advanced training in caring for patients with brain and spine tumors. My goal is the compassionate care of children paired with leading scientific advances in these tumors.

I have special expertise caring for children with astrocytomas. Some of these tumors, called low-grade gliomas, look very much like normal brain tissue to the naked eye. I use MRI during surgery to distinguish between normal tissue and tumor tissue, which enables me to remove the tumor tissue precisely and effectively. We also use advanced techniques to map the parts of the brain responsible for language and movement before and during surgery. We can avoid these areas during an operation and safely remove tumors without harming vital brain tissue.

Read more

Whenever possible, I try to use minimally invasive endoscopic approaches to operate on tumors at the base of the skull, such as those in or near the pituitary gland, like craniopharyngiomas and adenomas. Using this innovative technique, I can remove these tumors through the nose. This leaves no external scars, is less uncomfortable, and is easier for children to tolerate than conventional neurosurgery.

In addition to caring for young patients, I direct a research laboratory. I am seeking to understand several connected scientific questions. One major focus is exploring the events that turn noncancerous tumors, such as low-grade astrocytomas, into cancerous tumors. We have shown that certain cells from the bone marrow travel to the brain and promote the development of tumors. Treating these interactions is known as immunotherapy. The basic science underlying this idea forms the center of our research. 

Another focus of the lab is to understand how tumor cells move through the brain. We study a rare tumor called gliomatosis cerebri to better understand this phenomenon and prevent tumor invasion. Finally, we are interested in what is known as precision medicine. This means developing tools and algorithms to better tailor therapy to target mutations we have discovered through biopsies.

I truly draw inspiration from my young patients every day. As we make treatment decisions with our patients and their families, we always keep in mind the goal of a happy, productive childhood and their continued physical, emotional, and intellectual development.

My Role at MSK

A pediatric neurosurgeon is a doctor with special training in surgery on the central nervous system (brain, spinal cord, and nerves). They treat children and adolescents.

Areas of Expertise

My Specialties

  • Pediatric Neurosurgery
  • Pediatric Brain Tumors
  • Neuroendoscopy
  • Minimally Invasive Neurosurgery
  • Spinal Cord Tumors
Education & Honors

Education

  • MD, Weill Cornell Medical College
  • PhD, Weill Cornell Graduate School of Medical Sciences

Residencies

  • Neurosurgery - Memorial Sloan Kettering Cancer Center/NewYork-Presbyterian

Fellowships

  • Pediatric Neurosurgery - Children's Hospital of Philadelphia

Board Certifications

  • Neurological Surgery
  • Pediatric Neurological Surgery

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.

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. Greenfield 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 Neurosurgery 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. Greenfield’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