Hyo S Ahn, M.D.

Headshot of Hyo S Ahn

Languages: English, Korean


Diagnostic Radiology, Neuroradiology, Radiology

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Insurance Information

Main Phone

Outside of Maryland & Washington D.C.

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International Patients

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The Johns Hopkins Hospital (Main Entrance)

Appointment Phone: 443-997-7237
1800 Orleans St.
Baltimore, MD 21287 map
Phone: 410-955-4100

Johns Hopkins Outpatient Center (now called Levi Watkins, Jr., M.D., Outpatient Center)

Appointment Phone: 443-997-7237
601 N. Caroline St.
Baltimore, MD 21287 map
Phone: 410-955-4100

Johns Hopkins Bayview Medical Center

Appointment Phone: 443-997-7237
4940 Eastern Avenue
Baltimore, MD 21224 map
Phone: 443-997-1811

Johns Hopkins Medicine - White Marsh

Appointment Phone: 443-997-7237
4924 Campbell Boulevard
Suite 105
White Marsh, MD 21236 map
Phone: 443-442-2400 | Fax: 443-451-6986

Johns Hopkins Medical Imaging - Columbia

Appointment Phone: 443-997-7237
11055 Little Patuxent Parkway
Columbia Medical Center, Suite L9
Columbia, MD 21044 map
Phone: 443-574-5800 | Fax: 443-451-6986

Johns Hopkins Medicine - Green Spring Station

Appointment Phone: 443-997-7237
10803 Falls Road
Pavilion III, Suite 1100
Lutherville, MD 21093 map
Phone: 410-583-2700 | Fax: 443-451-6986

Johns Hopkins Medical Imaging - Bethesda

Appointment Phone: 443-997-7237
6420 Rockledge Drive
Suite 3100
Bethesda, MD 20817 map
Phone: 301-897-5656 | Fax: 443-451-6986


Dr. Hyo Seung Ahn is an associate professor, part time, in the Johns Hopkins Medicine Department of Radiology and Radiological Science. His areas of clinical expertise include Neuroimaging and Myelography.

Dr. Ahn received his M.D. from Yonsei University College of Medicine in Seoul, Korea. He completed a diagnostic radiology residency at West Virginia University and a two-year fellowship in Neuroradiology at the University of Pittsburgh.

He speaks English and Korean.

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Departments / Divisions



  • MD; Yonsei University College of Medicine (1971)


  • Radiology; Danbury Hospital (1976)
  • Radiology; West Virignia University School of Medicine (1978)


  • Neuroradiology; University of Pittsburgh Medical Center (1980)

Board Certifications

  • American Board of Radiology (Diagnostic Radiology) (1978)
  • American Board of Radiology (Neuroradiology) (1996)

Patient Ratings & Comments

The 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.

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