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Accepting New PatientsTomoyoshi Shigematsu, MD, PhD
Neurosurgery
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About Me
Tomoyoshi (Tomo) Shigematsu, MD, PhD is as an Assistant Professor of Neurosurgery, Neurology, and Radiology at Mount Sinai Health System dedicated to pediatric and adult cerebrovascular and endovascular neurosurgery. Dr. Shigematsu specializes in the endovascular treatment of pediatric cerebrovascular disorders (including Vein of Galen Malformation, brain and spine arteriovenous malformations/fistulas, and aneurysms), endovascular treatments of craniofacial vascular lesions in adults and children, and the surgical and endovascular treatments of general cerebrovascular diseases (including stroke, intracranial and carotid stenosis, brain aneurysms, arteriovenous malformations and fistulas of the brain and spine, and pre-operative embolization of tumors).
Dr. Shigematsu earned a medical degree from Osaka University Medical School in 2004. He completed full training (residency and fellowship) of neurosurgery and neuroendovascular surgery at Kobe City General Hospital and Osaka University Hospital, both national leaders in cerebrovascular neurosurgery. Dr. Shigematsu studied about treatment of intracranial aneurysms and completed his PhD Osaka University Graduate School of Medicine in 2015. He is board certified from the Japan Neurosurgical Society, the Japanese Society for Neuroendovascular Therapy, and the Japan Stroke Society.
Following his clinical interests in pediatric cerebrovascular treatments, Dr. Shigematsu joined the Cerebrovascular Center at Mount Sinai Health System to conduct multiple research programs. While in the United States, he obtained his United States medical licensure and then completed his fellowship in Neuroendovascular Surgery under the tutelage of Alejandro Berenstein, MD.
In 2018, Dr. Shigematsu joined the Cerebrovascular Center at Mount Sinai Health as Clinical Instructor where he cared for pediatric and adult patients with vascular disorders of the brain, spine, head and neck.
Dr. Shigematsu continues his clinical research as an investigator in several multi-center trials. He has published research in peer-reviewed journals and has presented his work at national and international meetings, including the International Stroke Conference. He is a member of the American Association of Neurological Surgeons and Society of NeuroInterventional Surgery.
From Day 6 to Year 6: Read about how Dr. Shigematsu and Dr. Johanna Fifi assisted Dr. Alejandro Berenstein in curing a child of his vein of Galen malformation with 16 neurovascular embolizations over the course of six years in the 2020 Neurology & Neurosurgery Specialty Report.
Language
Position
Hospital Affiliations
- Mount Sinai Morningside
- Mount Sinai Beth Israel
- Mount Sinai Brooklyn
- Mount Sinai Queens
- The Mount Sinai Hospital
- Mount Sinai West
Research Topics
Stroke
About Me
Tomoyoshi (Tomo) Shigematsu, MD, PhD is as an Assistant Professor of Neurosurgery, Neurology, and Radiology at Mount Sinai Health System dedicated to pediatric and adult cerebrovascular and endovascular neurosurgery. Dr. Shigematsu specializes in the endovascular treatment of pediatric cerebrovascular disorders (including Vein of Galen Malformation, brain and spine arteriovenous malformations/fistulas, and aneurysms), endovascular treatments of craniofacial vascular lesions in adults and children, and the surgical and endovascular treatments of general cerebrovascular diseases (including stroke, intracranial and carotid stenosis, brain aneurysms, arteriovenous malformations and fistulas of the brain and spine, and pre-operative embolization of tumors).
Dr. Shigematsu earned a medical degree from Osaka University Medical School in 2004. He completed full training (residency and fellowship) of neurosurgery and neuroendovascular surgery at Kobe City General Hospital and Osaka University Hospital, both national leaders in cerebrovascular neurosurgery. Dr. Shigematsu studied about treatment of intracranial aneurysms and completed his PhD Osaka University Graduate School of Medicine in 2015. He is board certified from the Japan Neurosurgical Society, the Japanese Society for Neuroendovascular Therapy, and the Japan Stroke Society.
Following his clinical interests in pediatric cerebrovascular treatments, Dr. Shigematsu joined the Cerebrovascular Center at Mount Sinai Health System to conduct multiple research programs. While in the United States, he obtained his United States medical licensure and then completed his fellowship in Neuroendovascular Surgery under the tutelage of Alejandro Berenstein, MD.
In 2018, Dr. Shigematsu joined the Cerebrovascular Center at Mount Sinai Health as Clinical Instructor where he cared for pediatric and adult patients with vascular disorders of the brain, spine, head and neck.
Dr. Shigematsu continues his clinical research as an investigator in several multi-center trials. He has published research in peer-reviewed journals and has presented his work at national and international meetings, including the International Stroke Conference. He is a member of the American Association of Neurological Surgeons and Society of NeuroInterventional Surgery.
From Day 6 to Year 6: Read about how Dr. Shigematsu and Dr. Johanna Fifi assisted Dr. Alejandro Berenstein in curing a child of his vein of Galen malformation with 16 neurovascular embolizations over the course of six years in the 2020 Neurology & Neurosurgery Specialty Report.
Language
Position
Hospital Affiliations
- Mount Sinai Morningside
- Mount Sinai Beth Israel
- Mount Sinai Brooklyn
- Mount Sinai Queens
- The Mount Sinai Hospital
- Mount Sinai West
Research Topics
Stroke
Education
MD, Osaka University
Residency, Neurosurgery
Osaka University Hospital - Suita
Residency, Neurosurgery
Osaka Neurological Institute
Residency, Neurosurgery
Kobe City Medical Center General Hospital
Fellowship, Endovascular Surgical Neuroradiology
Osaka University Hospital - Suita
Fellowship, Neurosurgery
Icahn School of Medicine At Mount Sinai
Certifications
American Board of Neurological Surgery
Locations
Insurance Information
Accepted insurance may vary by the doctor’s office location. Please contact the office directly to obtain the most up-to-date insurance information.
Patients with Cigna Medicare Advantage or Humana Medicare Advantage insurance: Please read this important message before booking to find out if out-of-network costs may apply to your next visit.
- Patient OfficeKlingenstein Clinical Center, 1-North, 1450 Madison Avenue, New York, NY, 10029
Physicians who provide services at hospitals and facilities in the Mount Sinai Health System might not participate in the same health plans as those Mount Sinai hospitals and facilities (even if the physicians are employed or contracted by those hospitals or facilities).
Information regarding insurance participation and billing by this physician may be found on this page, and can also be obtained by contacting this provider directly. Because physicians insurance participation can change, the insurance information on this page may not always be up-to-date. Please contact this physician directly to obtain the most up-to-date insurance information.
Insurance and health plan networks that the various Mount Sinai Health System hospitals and facilities participate in can be found on the Mount Sinai Health System website.
Publications
Selected Publications
- A four-hit mechanism is sufficient for meningioma development. Alex Devarajan, Carina Seah, Jack Y. Zhang, Vikram Vasan, Rui Feng, Emily K. Chapman, Tomoyoshi Shigematsu, Joshua Bederson, Raj K. Shrivastava. Journal of Neuro-Oncology
- Real-world evaluation of the accuracy of the Viz.AI automated intracranial hemorrhage volume calculation tool. Ian Odland, Kayla J. Liu, Dylan Wu, Kurt A. Yaeger, Luis C. Ascanio, Colton Smith, Braxton Riley Schuldt, Tirone Young, Christina P. Rossitto, Margaret Downes, Vikram Vasan, Muhammad Ali, Trevor Hardigan, Tomoyoshi Shigematsu, Johanna T. Fifi, J. Mocco, Christopher Paul Kellner. Journal of NeuroInterventional Surgery
- SCUBA evacuation within 24 hours of basal ganglia hemorrhage results in promising functional outcomes. Christopher Paul Kellner, Muhammad Ali, Roshini Kalagara, Akhil Rao, Colton Smith, Joshua Finesilver, Trevor Hardigan, Tomoyoshi Shigematsu, John Liang, Fernanda Carvalho Poyraz, Michael F. Waters, Magdy Selim, J. Mocco. Journal of NeuroInterventional Surgery
Industry Relationships
Physicians and scientists on the faculty of the Icahn School of Medicine at Mount Sinai often interact with pharmaceutical, device, biotechnology companies, and other outside entities to improve patient care, develop new therapies and achieve scientific breakthroughs. In order to promote an ethical and transparent environment for conducting research, providing clinical care and teaching, Mount Sinai requires that salaried faculty inform the School of their outside financial relationships.
Below are financial relationships with industry reported by Dr. Shigematsu during 2024 and/or 2025. Please note that this information may differ from information posted on corporate sites due to timing or classification differences.
Consulting or Other Professional Services Examples include, but are not limited to, committee participation, data safety monitoring board (DSMB) membership
- ImperativeCare, Inc.
- KANEKA MEDICAL AMERICA LLC
Mount Sinai's faculty policies relating to faculty collaboration with industry are posted on our website. Patients may wish to ask their physician about the activities they perform for companies.
Physicians and scientists on the faculty of the Icahn School of Medicine at Mount Sinai often interact with pharmaceutical, device, biotechnology companies, and other outside entities to improve patient care, develop new therapies and achieve scientific breakthroughs. In order to promote an ethical and transparent environment for conducting research, providing clinical care and teaching, Mount Sinai requires that salaried faculty inform the School of their outside financial relationships.
Below are financial relationships with industry reported by Dr. Shigematsu during 2024 and/or 2025. Please note that this information may differ from information posted on corporate sites due to timing or classification differences.
Consulting or Other Professional Services Examples include, but are not limited to, committee participation, data safety monitoring board (DSMB) membership
- ImperativeCare, Inc.
- KANEKA MEDICAL AMERICA LLC
Mount Sinai's faculty policies relating to faculty collaboration with industry are posted on our website. Patients may wish to ask their physician about the activities they perform for companies.