Developing the next generation of treatments, and the next generation of clinicians for patient with spinal disorders

About Us

Our Story

Dr. Arthur Jenkins founded the Greenwich Neurological Institute (GNI) in 2016 in order to deliver world class care, education, and research to all. Through GNI programming, Dr. Jenkins is able to mentor the next generation of outstanding physicians by having students ranging from high school to medical school shadow him in clinic and surgery. Additionally, his research projects have lead to cutting edge surgical techniques and improved patient outcomes. And with GNI donations, Dr. Jenkins will bring modern spine care to international patients, unable to get such care at home.

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Sarah Herrera Jenkins, NP

CEO & President

As President and CEO of the Greenwich Neurological Institute, Sarah has extensive direct clinical and research experience in the field of neurosurgery spine. She is board-certified acute care Nurse Practitioner, certified in neuroscience nursing and is a registered nurse first assistant in the operating room. Sarah earned her Bachelor of Science in Nursing degree from the University of Pennsylvania and went on to obtain her Master of Science in Nursing Degree at New York University. She holds a certification in Neuroscience Nursing through the American Board of Neuroscience Nursing. In addition, Sarah is a registered first assistant in surgery and holds the distinction of being one of the first of Mount Sinai Hospital’s credentialed Nurse Practitioners with privileges to assist with surgical procedures in the operating room.

Meet the Team

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Arthur L Jenkins III MD

Founder & Board Member

Dr. Jenkins is a board-certified neurosurgeon in New York City. A northeast native, he earned his BA in Biochemistry and then his MD from the University of Pennsylvania. His post-doctoral training included a surgical internship at NYU Medical Center/ Bellevue Hospital, a neurosurgical residency at The Mount Sinai Medical Center, followed by a complex spinal surgery fellowship at The Brigham and Women's Hospital in Boston. He has clinical appointments in the Department of Neurosurgery as well as in the Department of Orthopaedic Surgery.  He is a treating physician for the NYPD, the NY Jets, and the NFL retired players’ program.

An innovator in the field of minimally invasive spine surgery, Dr. Jenkins' clinical interests span spectrum of spinal disorders. He has and continues to author numerous chapters and publish dozens of peer-reviewed papers on the subjects of neurosurgery and spinal surgery, and given scores of invited talks. Dr. Jenkins' clinical research focuses on advances in integrating new technology, and developing new techniques and technology for improvement in patient outcomes. His basic science research focuses on treatments for spinal cord injury, acute and delayed intervention, including surgical techniques to restore lost function below the level of injury, as well as developing new technology related to spinal injury prevention.

Dr. Jenkins’ approach to treatment is to partner with the patient and identify specific goals for treatment, and then offer highly individualized treatment plans with a focus on optimizing their quality of life.


Jack (John) O'Donnell

Clinical Research Coordinator

Jack earned his Bachelor's of Arts in Behavioral and Cognitive Neuroscience from Colorado State University. Jack has previously worked on the industry side of clinical research preforming large scale clinical trials for companies such as Abbott and Eli Lilly . Jack works with Dr. Jenkins to produce and maintain the many innovative research projects that GNI and Jenkins NeuroSpine have.

Board of Directors


Konstantinos Margetis, MD, PHD

Mount Sinai Neurosurgeon

Dr. Margetis completed fellowships in Complex Spine Surgery and Pediatric Neurosurgery. He is a frequent co-surgeon of Dr. Jenkins.


Anthony Vine, MD

Mount Sinai Surgeon

Dr. Vine is recognized as a Castle Connolly NY Top Doctor in Laparoscopic and General Surgery. Not only is he an accomplished surgeon, but he is also an accomplished violinist.

Get Involved

To donate to the ongoing efforts of the GNI, please click here.