Moyamoya Center

The Stanford Moyamoya Center offers a highly experienced group of professionals who see several new moyamoya patients each week, making Stanford the largest moyamoya referral center in the world. 

Moyamoya Center
300 Pasteur Drive
Stanford, CA 94305
Phone: 650-723-5575 Getting Here
Maps & Directions
300 Pasteur Drive
Stanford, CA 94305
Phone: 650-723-5575 Getting Here

Our Doctors

Care and Treatment of Moyamoya Disease


Surgery for moyamoya disease is offered to prevent neurologic deterioration from strokes. Two types of surgical approaches are offered for patients with moyamoya: direct and indirect revascularization.

Direct revascularization

A surgical procedure in which a branch of a scalp artery is connected to a branch of the brain artery on the outer surface of the brain, providing immediate improvement in blood supply to the brain.

Indirect revascularization

Various indirect surgical methods to provide more blood flow to the brain include EDAS and EMS.

Encephalo-duro-arterio-synangiosis (EDAS)

A procedure that uses a branch of temporal artery, which is laid directly on the surface of the brain without making a direct connection, to form a new blood supply.

Encephalo-myo-synangiosis (EMS)

An indirect bypass operation in which the temporalis muscle is dissected and then placed on the surface of the brain to form a new blood supply to develop from the transposed muscle.

Omental bypass

A surgical procedure in which the blood-rich lining surrounding the organs in the abdomen is laid over the surface of the brain, which allows new blood vessels to develop and grow into the brain.

Post-operative care

Moyamoya surgical procedures requires approximately three days of hospitalization. Post-operatively, patients experience some minor scalp pain from the incision, and some patients may get headaches. Patients with moyamoya have minimal restrictions after surgery.

Clinical Trials

Clinical trials are research studies that evaluate a new medical approach, device, drug, or other treatment. As a Stanford Health Care patient, you have access to the latest, advanced clinical trials.

Open trials refer to studies currently accepting participants. Closed trials are not currently enrolling, but may open in the future.

For Patients

Call us at 650-723-5575 to make an appointment or send a fax to 650-723-1948.

For questions, send an email to

International Patients
Phone: +1 650-723-8561

Call us to make an appointment


For Health Care Professionals


Phone: 1-866-742-4811 
Fax: 650-320-9443
Monday – Friday,  8:30 a.m. – 5 p.m.


Phone: 1-800-800-1551,  24 hours - 7 days a week

Stanford Health Care (formerly Stanford Hospital & Clinics) provides comprehensive services to refer and track patients, as well as provides the latest information and news for physicians and office staff. For help with all referral needs and questions visit Referring Physicians.


Call us at 650-723-5575 to refer a patient. Mail films for review to:

  • Gary Steinberg, MD, PhD
    Dept. of Neurosurgery
    300 Pasteur Drive, Room R-281
    Stanford, CA 94305-5327

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