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Dr. Jai Grewal

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Jai Grewal, M.D., is a Board-Certified Neuro-Oncologist who completed his neuro-oncology fellowship at the MD Anderson Cancer Center in Houston, Texas. Following medical school he completed an internal medicine internship at Griffin Hospital in Connecticut, which is affiliated with Yale University. He then finished a neurology residency at the University of Texas, Southwestern.

His clinical practice includes management of patients with primary and metastatic tumors of the brain and spine. These include glioblastoma, astrocytoma, oliodendroglioma, ependymoma, meningioma, lymphoma, as well as other diagnoses. Dr. Grewal has a particular interest in central nervous system metastases resulting from cancers of the lung, breast, kidneys, melanoma, and lymphoma. He has an interest in utilizing multi-modality treatment options including surgical options, limited-field radiotherapy, stereotactic radiosurgery, as well as standard and experimental chemotherapy.

Dr. Grewal personally supervises traditional and targeted chemotherapy which may be administered intravenously, by mouth, into cerebrospinal fluid, and directly into the tumor. In addition to the treatment of tumors, he has an interest in developing strategies to preserve quality of life. He frequently collaborates with specialists in neurosurgery, radiation oncology, medical oncology, neuropsychology, neuropathology, and neuroradiology in order to improve outcomes and minimize side effects.

He is the principal investigator leading several active clinical trials, and an executive board member of the American Cancer Society (Nassau region). He is an active member of area neuro-oncology tumor boards and hospital cancer committees. He has authored numerous publications and is frequently an invited speaker at universities and hospitals nationwide.Dr.Grewal is a member of the following associations: Society of Neuro-oncology (SNO), American Society of Clinical Oncology (ASCO), American Academy of Neurology (AAN), American Medical Association (AMA), Nassau County Medical Society (NCMS), and Suffolk County Medical Society (SCMS). He is fluent in Spanish.

New Therapy Using NovoTTF™ System For Patient with Brain Tumors

Dr Grewal discusses options for patients with brain tumors. The interview is focused on a New Therapy using Alternating Electrical Fields called Novo – TTF. 

The interview is with a gentleman with an incurable brain tumor. He is an Iraq war veteran and has had 10 years of service with the US Army, and one year in Iraq. 






"Eltrombopag for the Treatment of Radiation-Induced Thrombocytopenia in a Patient with a Glioblastoma"
Duic JP, Grewal J, McConie K, Staszewski H, Haas J, Kesari S.
J Neurooncol 2011 - Aug 11.

"OmmayaCisternography with Delayed Radiotracer Activity Demonstrated in the Peritoneal Cavity"
Scalcione LR, Katz DS, Duic JP, Grewal J, Yung EY. In-111 DTPA.
ClinNucl Med. 2009 - Dec;34(12):955-7.

Duic JP, Grewal J, Kesari S.
Medlink Neurology 2009.

"Spinal Ependymoma"
Grewal J, Duic JP, Kesari S.
Medlink Neurology 2009.

BREAST CANCER RESEARCH Breast cancer surface receptors predict risk for developing brain metastasis and subsequent prognosis
Jai Grewal and Santosh Kesari

SPRINGLINK Seizures and epilepsy in cancer: Etiologies, evaluation, and management
Jai Grewal, Harpreet K. Grewal and Arthur D. Forman



Dr. Grewal is affiliated with the following hospitals

  • Winthrop University Hospital
  • South Nassau Communities Hospital
  • Mercy Medical Center
  • North Shore University Hospital
  • Huntington Hospital
  • Plainview Hospital
  • Long Island Jewish Medical Center
  • St. Francis Hospital
  • St Joseph's Hospital
  • St. Catherine of Siena Medical Center


"Dr. Grewal was great. He was always there every day to check on me, because the resection of the tumor was on the right side of the brain, which affects all the left motor skills. … My wife would call Kerry all the time. Kerry was there always, returning the calls immediately, and that was very helpful."
- Rick Box watch video


(800) 775-7784 | (516) 300-1281

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