Jeffrey P. Greenfield MD, PhD

07/27/2025

As part of my well documented attemtps to re-define Chiari based on physiology rather than radiology, herniation of the brain from CSF leaks have frequently emerged during evaluations in a crucial subset of patients. You might not actually have Chiari, but simply need a world-class team to suspect, identify and fix these insidious leaks causing your brain to sag. I'm proud of my partners Gayle Salama, Ibrahim Hussain and Jared Knopman who have helped us form one of the preeminent CSF leak centers in the world at Weill Cornell Medicine. Our team gave an invited overview on a spine-focused podcast, shared with you here today! Several of my patient discussed throughout and a brief cameo at 40 minutes....Please share widely, this isn't talked about enough and is missed frequently!

https://www.youtube.com/live/XpCPSZZB8bc?si=Xa-HQRP2eZ9OdwvC

leak

The Seattle Science Foundation is a not for profit organization dedicated to advancing the quality of patient care through education, research, innovation an...

07/16/2025

10 lucky Children's Brain Tumor Project volunteers/summer interns learning about the human brain, neuroscience and neurosurgery using sheep brains. next stops: real anatomy lab and operating rooms to watch the real deal! Go to the CBTP website to learn more! Thank you Kate Rosen, MD for the assist today! https://www.childrensbraintumorproject.org/summerinternship/

07/13/2025

Academic year wrap up and kick off after my first full year as program director for the neurosurgery training program at Weill Cornell-NYPH/MSKCC. Amazing graduates (Gary, Maricruz and Rafael), amazing guest speaker and photo-bomber, Alfredo Quinones, MD, amazing celebration after graduation, and amazing new interns (Ruth and Albert). I'm lucky to be part of such a rich tradition as former graduate myself!

07/04/2025

Wishing you and your families a healthy, safe and fun holiday weekend! Let’s see if anyone beats NYC fireworks….😜🤣🥰

03/09/2025

🚨 NYC Marathon Lottery Results Are In! 🚨

Didn’t get picked? Don’t hang up your running shoes just yet—we’ve got a spot for you. 🏃‍♂️💨

Join the Children’s Brain Tumor Project TCS New York City Marathon team and run for something bigger than just 26.2 miles. Every step you take helps fund groundbreaking research to find better treatments—and a cure—for children facing brain tumors.

Don’t miss this chance. DM us or sign up now for a chance to secure your spot!
https://cbtpfoundation.org/2025-nyc-marathon/

01/04/2025

Off the Clock with Dr. Jeffrey P. Greenfield MD, PhD 🕰️
Before becoming a trailblazer in pediatric neurosurgery, Dr. Greenfield began his academic journey at Amherst College, where he graduated magna cm laude in Neuroscience before receiving his M.D. and Ph. D. from the Weill Medical College.
Known for its rigorous curriculum and emphasis on critical thinking, Amherst College professors helped shape his passion for discovery and problem-solving.

Now, as Co-Director of the Children's Brain Tumor Project at Weill Cornell Medicine, Dr. Greenfield combines that foundation with cutting-edge surgical skill, and novel scientific approaches to fight pediatric brain tumors. 🧠 Every child he treats benefits from innovative, targeted approaches informed by his world-class team of scientists.

Want to see how his groundbreaking work is transforming care for children? Check out more on our website!
https://www.childrensbraintumorproject.org/.../27/our-team/

11/08/2024

SO many people asking about second opinions! The process is simple and efficient. We will send links for MRI uploads. Share this post if friends or family you are having issues getting second or third opinions, we're always delighted to help, even if travel is not feasible. Have a great weekend everyone.

09/29/2024

Hanging out with Drs. Brockmeyer, Grant and Gilmer - all fantastic surgeons and better people, in Houston, at the Congress of Neurologic Surgeons.

07/09/2024

Owen and I wanted to share some thoughts on how surgeons and children can partner successfully!

https://neurosurgery.weillcornell.org/about-us/blog/patients-partners

07/02/2024

It’s always inspiring to see the cutting edge of pediatric brain tumor research and catch up with colleagues. Congrats to Carolina Cocito, PhD from our lab for presenting data that will lead to new clinical trials in ETMR and craniopharyngioma shortly!!

05/20/2024

At commencement for the graduating class of Weill Cornell Medical College, Dr. Mark Souweidane was announced as the winner of the 2024 Dean's Award for Excellence in Mentorship.

This prize recognizes a faculty member who demonstrates an outstanding commitment to supporting colleagues to become academic leaders in clinical care, research, or education.

If Mark didn't help train me, my life would be very different. Thank you, sir.

04/24/2024

After enduring failed surgeries and worsening symptoms, Marie found hope with us. Despite the challenges of changing medical teams and repeating surgery, Marie remained resilient. Her story underscores the importance of persistence, advocating for oneself, and seeking specialized care for complex conditions.

https://neurosurgery.weillcornell.org/patient-story/maries-long-search-answer-chiari-story?fbclid=IwZXh0bgNhZW0CMTAAAR0EddcQo7akwMirue0wQ3086KjlsfwZd76LBH2fk3dU1V3KLqXTvfjObCA_aem_AaYVPQiMWeLaFi9ZSiyVFvKhly3UfaJSrdfoSIZDmzco67uM7MGSh_vljn_M5lieWuaLvHou_4opeMkksrW4ahpv