
Overview
Risheng Xu, M.D., Ph.D., is a fellowship-trained neurosurgeon with expertise in cerebrovascular and endovascular neurosurgery, and skull base pathologies. He treats patients with a wide range of cerebrovascular disorders such as cerebral aneurysms, subarachnoid hemorrhage, arteriovenous malformations, arteriovenous fistulas, carotid stenosis, cavernous malformations and moyamoya disease. He also treats skull base tumors such as acoustic neuromas (vestibular schwannomas) and meningiomas, and pain disorders such as trigeminal neuralgia. Dr. Xu completed his undergraduate studies at Harvard College, and attended medical school at the Johns Hopkins University School of Medicine, where he also obtained a Ph.D. in pharmacology and molecular sciences. He continued his residency training in neurosurgery at Johns Hopkins, and remained there to complete a fellowship in cerebrovascular and endovascular neurosurgery. Dr. Xu has been active in research throughout his training and has authored and co-authored numerous published studies. His basic science research endeavors focus on neuroinflammation after ischemic stroke and molecular mechanisms underlying trigeminal neuralgia. He has authored or co-authored over 100 manuscripts, and has published in journals such as Nature, Nature Communications, Science Advances, Science Signaling, Neuron, the Proceedings of the National Academy of Sciences (PNAS), the Journal of Neurosurgery, Neurosurgery and other journals. Clinically, he studies the long-term outcomes of patients with cerebrovascular disorders and trigeminal neuralgia.
Dr. Xu is rated as a Distinguished provider by MediFind in the treatment of Brain Aneurysm. His top areas of expertise are Brain Aneurysm, Subarachnoid Hemorrhage, Stroke, Transmyocardial Revascularization, and Stent Placement.
Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- EPO
- HMO
- POS
- PPO
- HMO
- POS
- PPO
- EPO
- HMO
- PPO
- INSURANCE PLAN
- MEDICARE PDP
- PPO
- HMO
- POS
- PPO
- HMO
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE-MEDICAID PLAN
Locations
Floor 5, Baltimore, MD 21287
301 Mason Lord Drive, Suite 1201, Baltimore, MD 21224
Johns Hopkins Outpatient Center
Dr. Caplan specializes in the treatment of cerebrovascular disorders of the brain, head, neck and spine, such as aneurysms, arteriovenous malformations, arteriovenous fistulas, moyamoya disease, carotid artery stenosis and stroke. He is dual fellowship trained in both open cerebrovascular neurosurgery and endovascular neurosurgery, allowing him to offer patients the full spectrum of the latest surgical and endovascular techniques in treating these diseases. Dr. Caplan also focuses on treating acoustic neuromas and other tumors of the skull base, including meningiomas. Dr. Caplan graduated with honors from the Johns Hopkins University with a degree in neuroscience, where he spent time in the Hunterian Neurological Surgery Research Laboratory. He then earned his medical degree from Harvard Medical School. He completed his neurosurgery residency at Johns Hopkins, along with fellowships in cerebrovascular neurosurgery and endovascular neurosurgery, also at Johns Hopkins. He then completed an additional fellowship in endovascular neurosurgery at the University of Miami before returning to join the Johns Hopkins faculty. Dr. Caplan is rated as a Distinguished provider by MediFind in the treatment of Brain Aneurysm. His top areas of expertise are Brain Aneurysm, Arteriovenous Malformation, Cerebral Arteriovenous Malformation, Thrombectomy, and Carotid Artery Surgery.
Johns Hopkins Outpatient Center
Dr. Tamargo specializes in the treatment of aneurysms, arteriovenous malformations (AVMs), arteriovenous fistulas (AVFs), and cavernous malformations of the brain and spinal cord in both adults and children. Dr. Tamargo specializes in revascularization procedures for moyamoya disease. For this condition, Dr. Tamargo performs either a microsurgical encephaloduroarteriomyosynangiosis (EDAMS) or a microsurgical extracranial-to-intracranial artery bypass. Dr. Tamargo also specializes in the treatment of acoustic neuromas (vestibular schwannomas). A recipient of numerous honors and awards, some of Dr. Tamargo's most recent accolades include the Neurosurgery Faculty Teaching Award and the Hopkins Richard S. Ross Clinician Scientist Award. Dr. Tamargo is rated as a Distinguished provider by MediFind in the treatment of Brain Aneurysm. His top areas of expertise are Brain Aneurysm, Subarachnoid Hemorrhage, Acoustic Neuroma, and Schwannoma.
Johns Hopkins University
Judy Huang is a Neurosurgery provider in Baltimore, Maryland. Dr. Huang is rated as an Elite provider by MediFind in the treatment of Brain Aneurysm. Her top areas of expertise are Trigeminal Neuralgia, Arteriovenous Malformation, Subdural Hematoma, Rhizotomy, and Microvascular Decompression. Dr. Huang is currently accepting new patients.
Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
- Distinguished
- Brain AneurysmDr. Xu isDistinguished. Learn about Brain Aneurysm.
- Experienced
- ApoplexyDr. Xu isExperienced. Learn about Apoplexy.
- Arteriovenous MalformationDr. Xu isExperienced. Learn about Arteriovenous Malformation.
- Awake CraniotomyDr. Xu isExperienced. Learn about Awake Craniotomy.
- Cerebellum Agenesis Hydrocephaly
- Cerebral Arteriovenous Malformation
- Chronic Subdural HematomaDr. Xu isExperienced. Learn about Chronic Subdural Hematoma.

