Refer a Patient

For urgent physician referrals, please call the Hopkins Access Line at:

410-955-9444 and ask to speak with Dr. Ahn or Dr. Gailloud.

Out-patient referrals: 410-955-4259

If you need further assistance in scheduling your appointment, please call one of the
following numbers:
Adult Neurology: 410-955-9441
Pediatric Neurology: 410-955-4259
Adult Neurosurgery: 410-955-6406
Pediatric Neurosurgery: 410-955-7337
Hopkins Access Line (HAL Line): 1-800-765-5447
This is available 24 hours a day, 7 days a week.

Request an Appointment

Maryland Patients

For pediatric stroke and intracerebral hemorrhage:
Phone: 410-955-4259
Fax: 410-614-2297

For aneurysms and vascular malformations:
Phone: 410-955-8525
Fax: 410-614-8238

Adult Neurology: 410-955-9441
Pediatric Neurology: 410-955-4259
Adult Neurosurgery: 410-955-6406
Pediatric Neurosurgery: 410-955-7337

Already a Patient?

Request your next appointment through MyChart!

Traveling for Care?

Whether you're crossing the country or the globe, we make it easy to access world-class care at Johns Hopkins.

Outside of Maryland (toll free)
410-464-6713
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Medical Concierge Services

International Patients
+1-410-502-7683
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Medical Concierge Services