Pediatric Neurosurgery Fellowship

Effective with the academic year starting in July 2022, our Pediatric Neurosurgery Fellowship is certified by the Accreditation Council for Pediatric Neurosurgery Fellowships (ACPNF) and fellows will be selected through the regular process managed by the Fellowship Match for Neurological Surgery (San Francisco Matching Programs). We are now accepting applications, which are due no later than August 31. Scroll down for application information.

Pediatric Neurosurgeons of the combined service of Weill Cornell Medicine and Columbia University

Drs. Mark Souweidane, Caitlin Hoffman, Jeffrey Greenfield, and Neil Feldstein

The newly accredited pediatric fellowship training program is based at the two main campuses of NewYork-Presbyterian (Weill Cornell Medicine on the upper east side of Manhattan and Columbia University on the upper west side). Fellows will train under the mentorship of Dr. Mark Souweidane and Dr. Neil Feldstein, directors of the combined pediatric neurosurgery service of these two Ivy League institutions.

The fellowship is designed to provide a comprehensive exposure to clinical pediatric neurosurgery. The primary goal is to educate postgraduate neurosurgeons or neurosurgeons in training on the detailed diagnostic and therapeutic options available for children with neurosurgical conditions.

The pediatric neurosurgery fellow will be involved in patient care throughout a year of training. This includes participation in the outpatient clinic for consultations, pre- and post-operative evaluations, and follow-up care. Inpatient activities include consultations and active involvement in the pre-operative, operative, post-operative, and non-operative management of pediatric neurosurgical patients. Supported by a clinical team of four pediatric neurosurgeons, five APPs, and neurological surgery residents from both Weill Cornell Medicine and Columbia, the fellow will also have ample time for research.

Working together across the pediatric neurosurgical clinical service, our Weill Cornell and Columbia surgeons play a central role in accelerating innovative therapeutic strategies, affording a fellow experience in such areas as fetal surgery for myelomeningocele; precision medicine and enhanced drug delivery for brain tumors; laser therapy and stereo EEG for epilepsy; minimally invasive and endoscopic surgery for hydrocephalus, brain tumors and congenital cysts; gene therapy for congenital neurodevelopmental disorders; and virtual surgical planning (VSP) for complex craniosynostosis.

The pediatric neurosurgery fellowship offers a robust clinical experience in the context of a rich educational environment. Our fellow will have the opportunity to participate in a suite of multidisciplinary educational conferences on several aspects of pediatric neurosurgical care. In addition to the NewYork-Presbyterian Hospital campuses, our pediatric neurosurgery team also serves patients at top-ranked specialty hospitals, Memorial Sloan Kettering Cancer Center and the Hospital for Special Surgery, which further enhances the fellowship experience.

NewYork-Presbyterian is the largest regional pediatric neurosurgery service provider in the tristate area. Ranked amongst the top 5 hospitals in the nation and boasting New York’s number one children’s hospital, NewYork-Presbyterian offers an incomparable training experience across a full range of conditions, including brain and spinal cord tumors, epilepsy, hydrocephalus, craniosynostosis, vascular disorders, Chiari malformation and syringomyelia, spina bifida, and spasticity.

Applicants for the pediatric neurosurgical fellowship match can be residents or graduates of neurosurgical residency programs in the United States that are approved by the Accreditation Council for Graduate Medical Education (ACGME), or of neurosurgical residency programs in Canada that are approved by the Royal College of Physicians and Surgeons of Canada. In addition, applicants who are Osteopathic Physicians or from foreign neurosurgical residency programs may apply for a match number, with the understanding that their acceptance into, and completion of, an accredited pediatric neurosurgery fellowship will not confer eligibility for certification by the American Board of Pediatric Neurosurgery.

Each applicant is required to submit a completed application packet, which includes:

1. CV
2. personal statement
3. two letters of recommendation
4. proof of U.S. Medical Licensing Exam (USMLE) Step 1 and Step 2; parts 1 and 2 (or ECFMG certification if MD completed overseas) 

Submit complete application packet to
Mark M. Souweidane, MD
Weill Cornell Medical College
520 East 70th Street, Box 99
New York, New York 10065

For additional information about the Pediatric Neurosurgery Fellowship at NewYork-Presbyterian Hospital, Weill Cornell Medicine, and Columbia University, please contact us at



Our Fellows

Current Fellow:

Neelan J. Marianayagam, MD, PhD, and Mark Souweidane, MD

Neelan J. Marianayagam MD, PhD

From: United States
Dr. Marianayagam studied medicine at Tel Aviv University, then completed his training in surgery and neurosurgery at Duke University Medical Center, Rabin Medical Center, and Shaare Zedek Medical Center.

Our fellowship alumni are now pursuing exciting careers in neurosurgery, and we wish them the very best.

Claudia Kazun-Fischer, MD, and Mark M. Souweidane, MD, Weill Cornell Medicine, 2019

Claudia Kuzan-Fischer, MD
From: Zurich, Switzerland

Rafael Uribe Cardenas with Dr. Mark Souweidane

Rafael Uribe Cardenas, MD
From: Bogota, Colombia
Dr. Cardenas has returned to Weill Cornell Medicine to begin his neurosurgery residency.


Muhammad Burhan Ud Din Janjua, MBBS
Muhammad Burhan Ud Din Janjua, MBBS
From: Pakistan

Assem Abdel Latif with Dr. Mark Souweidane

Assem Mounir Metwalli Abdel-Latif, MBBS
From: Ain Shams, Cairo, Egypt
Dr. Souweidane and Dr. Schwartz presented at an international meeting in Cairo, invited by Dr. Assem Abdel-Latif. Find out more about that meeting

Dr. Maria Santos with Dr. Roger Hartl
Maria M. Ferreira Neves dos Santos, MD
From: Lisbon, Portugal
Dr. Santos went on to a Global Health Fellowship in Tanzania. Read about her experiences there.

Konstantinos Margetis, Weill Cornell Medicine neurosurgical fellow
Konstantinos Margetis, M.D, MRCS
From: Athens, Greece


Neurological Surgery 525 E. 68th St., Starr 651, Box 99 New York, NY 10065