Justin Caplan, MD
Endovascular NeurosurgeryNeurosurgery
Highlights
Age Groups Seen
- Infant 0-2
- Child 3-12
- Adolescent 13-17
- Young Adult 18-25
- Adult 26-64
- Older Adult 65+
Languages
- English
In-Network Plans
View All Accepted Plans (12)Gender
MaleJohns Hopkins Affiliations:
- Johns Hopkins School of Medicine Faculty
About Justin Caplan
Primary Academic Title
Associate Professor of Clinical Neurological Surgery
Johns Hopkins Physician
Background
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.
Centers and Institutes
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Videos
Research Summary
Dr. Caplan’s research focuses on improving the understanding of the biology and clinical outcomes of cerebrovascular diseases and developing improved treatment options. He serves as an investigator in multiple clinical trials and studies.
PubMed - Publications
Selected Publications
Caplan JM, Colby G, Coon A, Huang J and Tamargo RJ. Managing Subarachnoid Hemorrhage in the Neurocritical Care Unit. Neurosurgery Clinics of North America 24(3):321-337, 2013
Caplan JM, Groves M, Jusue-Torres I, Kim J, Liauw J, Bydon A, Tamargo RJ. Microsurgical Obliteration of a Thoracic Spinal Perimedullary Arteriovenous Fistula. Neurosurgical Focus 37 (Suppl 2):Video 13, 2014
Caplan JM, Kaminsky I, Gailloud P, Huang J. A Single Burr-hole Approach for Direct Transverse Sinus Cannulation for the Treatment of a Dural Arteriovenous Fistula. Journal of NeuroInterventional Surgery 7:E5, 2015
Caplan JM, Papadimitriou K, Wuyang Y, Colby GP, Coon AL, Olivi A, Tamargo RJ, Huang J. The minipterional craniotomy for anterior circulation aneurysms: Initial experience with 72 patients. Neurosurgery 10 (Suppl 2):200-207, 2014
Caplan JM, Sankey E, Yang W, Colby G, Coon A, Tamargo R, Huang J. Impact of Indocyanine Green Videoangiography on Rate of Clip Adjustments following Intraoperative Angiography. Neurosurgery 75:437-444, 2014
Honors
- Step for Hope Chair of Research Award for Excellence in Brain Aneurysm Research, Brain Aneurysm Foundation, 7/1/15
- Walter Dandy Award for Clinical Research, Johns Hopkins University School of Medicine, Department of Neurological Surgery, 7/1/14
- Timothy P. Susco Chair of Research Award for Excellence in Brain Aneurysm Research, Brain Aneurysm Foundation, 7/1/13
- Irving J. Sherman Award for Resident Achievement, Johns Hopkins University School of Medicine, Department of Neurological Surgery, 7/1/12
Memberships
- American Association of Neurological Surgeons (AANS)
- Congress of Neurological Surgeons (CNS)
- Joint Cerebrovascular Section of the AANS/CNS
- Society of NeuroInterventional Surgery (SNIS)
Professional Activities
Society of NeuroInterventional Surgery, Chair of Fellows Committee, 7/1/16
Locations
- Levi Watkins, Jr., M.D., Outpatient Center
- 601 North Caroline Street, Floor 5, Baltimore, MD 21287
- Get Directions
- phone: 410-955-6406
- fax: 410-955-6402
Expertise
Education
- Fellowship: University of Miami School of Medicine, Neurological Surgery, 2017
- Residency: Johns Hopkins University School of Medicine, Neurological Surgery, 2016
- Medical Education: Harvard Medical School, MD, 2009
Board Certifications
- Neurological Surgery: American Board of Neurological Surgery, 2022
Insurance
- Aetna
- CareFirst
- Cigna
- First Health
- Geisinger Health Plan
- HealthSmart/Accel
- Johns Hopkins Health Plans
- MultiPlan
- Pennsylvania's Preferred Health Networks (PPHN)
- Point Comfort Underwriters
- Private Healthcare Systems (PHCS)
- Veteran Affairs Community Care Network (Optum-VACCN)
Ratings & Reviews
4.8 out of 5
77 ratings, 34 reviewsThe Patient Rating score is an average of all responses to physician related questions on the national CG-CAHPS Medical Practice patient experience survey through Press Ganey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Comments are also gathered from our CG-CAHPS Medical Practice Survey through Press Ganey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.
- 5 out of 5 starsReviewed on 3/23/2026
Very professional, courteous, informative
- 5 out of 5 starsReviewed on 3/20/2026
Caplan and his team are great.
- 5 out of 5 starsReviewed on 3/20/2026
Dr Caplan is patient and understands of your concerns
- 5 out of 5 starsReviewed on 2/9/2026
I had a brain aneurysm, and thanks to my doctor and the entire medical team my life was saved. I am very grateful for the care, professionalism, and kindness they showed me during a very difficult time
- 5 out of 5 starsReviewed on 1/22/2026
Very friendly and honest.
- 5 out of 5 starsReviewed on 1/12/2026
First visit. Felt positive and impressed.
- 5 out of 5 starsReviewed on 1/12/2026
Dr. Caplan is a world-class neurosurgeon. Hopkins is lucky to have him.
- 4 out of 5 starsReviewed on 1/8/2026
Good
- 5 out of 5 starsReviewed on 12/19/2025
Dr. Caplan's expertise, commitment and knowledge are exceptional.
- 5 out of 5 starsReviewed on 12/19/2025
Excellent care and always professional
- 5 out of 5 starsReviewed on 12/19/2025
He is a very good doctor he takes good care of me I trust his work I respect him.
- 4 out of 5 starsReviewed on 12/11/2025
Dr. Caplan was wonderful and squeezed me into his schedule to evaluate a possible aneurysm in concert with [staff].
- 5 out of 5 starsReviewed on 12/8/2025
Dr Caplan is wonderful and his PA [staff] is an absolute treasure.
- 5 out of 5 starsReviewed on 12/1/2025
Listens, explains clearly, offers opportunity for questions, friendly, professional, reassuring. Great doctor.
- 5 out of 5 starsReviewed on 11/19/2025
Wonderful - thoughtful, detailed, prepared and kind. A+++ experience with Dr. Caplan!
- 5 out of 5 starsReviewed on 11/17/2025
I feel very confident having Dr. Caplan as my neurosurgeon.
- 5 out of 5 starsReviewed on 11/3/2025
Excellent
- 5 out of 5 starsReviewed on 10/27/2025
I trust him
- 5 out of 5 starsReviewed on 10/20/2025
Good listener. Clear explanations. Asked me if I had questions and answered them to my satisfaction.
- 5 out of 5 starsReviewed on 10/20/2025
Dr. Caplan is like no other doctor. He is very busy, however he took the time to listen, he stated if it were his family he would give the same information. This doctor is what most patients need. He is EXTRODINARY. He cares, he has mastered his field of expertise.
- 5 out of 5 starsReviewed on 10/20/2025
Very helpful.
- 5 out of 5 starsReviewed on 10/13/2025
Dr Caplan is a excellent Doctor and very professional
- 5 out of 5 starsReviewed on 10/7/2025
Dr Caplan is a great provider. Thank you for taking on my case.
- 5 out of 5 starsReviewed on 8/28/2025
Dr. Caplan is the best! He's an exceptional surgeon and human being. He thoroughly explained everything and answered all my questions. I sincerely appreciate how thorough he is. Love him!
- 5 out of 5 starsReviewed on 7/28/2025
Dr Caplan showed concern with the information provided and insisted or follow up procedures. He was thorough and concerned
- 5 out of 5 starsReviewed on 7/25/2025
Provider was excellent
- 5 out of 5 starsReviewed on 7/7/2025
Very knowledgeable, informative, easy to talk to and showed concern with my health
- 5 out of 5 starsReviewed on 7/7/2025
Excellent care
- 5 out of 5 starsReviewed on 6/30/2025
Excellent job
- 5 out of 5 starsReviewed on 6/23/2025
Dr Caplan is the best.
- 5 out of 5 starsReviewed on 6/2/2025
I have complete confidence in Dr. Caplan.
- 5 out of 5 starsReviewed on 5/29/2025
Friendly, thorough, helpful
- 5 out of 5 starsReviewed on 4/28/2025
Brings patient into decision making processVery knowledgeable
- 5 out of 5 starsReviewed on 4/21/2025
Everything went very well. I was given the results of a recent MRI and MRA tests. I was given a clean bill of health and I need no further contact with Dr. Caplan unless other symptoms arrive.