Mark Johnson, M.D.

Mark Johnson, M.D.

Co-Section Head, Cerebrovascular Diseases & Stroke

  • Neurology
  • Cerebrovascular Disease
  • Intracranial Atherosclerotic Disease (ICAD)


Mark Johnson, M.D., is a Professor in the Department of Neurology at UT Southwestern Medical Center. He specializes in the care of patients with cerebrovascular diseases and neurocritical care illnesses, with a special emphasis on patients who have had a stroke.

Dr. Johnson earned his medical degree at Universidad Central del Caribe in Puerto Rico. He completed a residency in neurology and a fellowship in vascular neurology at George Washington University Medical Center, followed by advanced training in neurocritical care through a fellowship at the UT Health Science Center.

Certified by the American Board of Psychiatry and Neurology in neurology and vascular neurology, he joined the UT Southwestern faculty in 1998.

Dr. Johnson has been involved in the clinical research of stroke patients since early in his career. He has participated, both as co-investigator and primary investigator, in national and international clinical trials aiming to translate basic science and clinical research into applicable treatments for stroke patients.

At UT Southwestern, he has held multiple administrative positions, including Medical Director and Co-Director of the hospital’s comprehensive stroke centers and Section Chief of the Cerebrovascular Disease and Stroke section.

He has also served on multiple committees at the departmental, institutional, and national level.

Among his multiple honors, Dr. Johnson twice received the coveted Trephined Cranium Award for best teaching from the UTSW Department of Neurology.

Education & Training
  • Residency - George Washington University Hospital (1993-1996), Neurology
  • Internship - George Washington University Hospital (1992-1993), Internal Medicine
  • Medical School - Universidad Central del Caribe
  • Fellowship - UT Health Science Center (1997-1998), Neurocritical Care
  • Fellowship - George Washington University Medical Center (1996-1997), Vascular Neurology
Professional Associations & Affiliations
  • American Academy of Neurology
  • American Society of Neuroimaging
  • American Stroke Association
  • World Stroke Organization
Honors & Awards
  • D Magazine Best Doctor, 2010-2020, 2022
  • PACT Employee Recognition 2019
  • Trephined Cranium Award – For Excellence in Teaching 2019, (Resident Teaching Award), UT Southwestern Department of Neurology
  • Texas Super Doctors 2008-2019
  • Best Doctor in America 2006-2019
  • Stroke Volunteer Award 2007, Dallas/Fort Worth and East Texas American Heart Association, US South Central Affiliate
  • Gold Level of Service 2006, PACT Employee Recognition Program
  • Trephined Cranium Award – For Excellence in Teaching 2005, (Resident Teaching Award), UT Southwestern Department of Neurology
  • Scholarship for Residents 1996, American Academy of Neurology
  • Alpha Omega Alpha 1992
Books & Publications
  • Small Subcortical Strokes
  • Reactivation of Stroke Symptoms
  • Preventative Agents in Stroke
  • Large-Vessel Disease Ischemia
  • Transcranial and Carotid Ultrasound

Clinical Focus

  • Cerebrovascular Disease
  • Intracranial Atherosclerotic Disease (ICAD)
  • Neurosonology
  • Acute Clinical Care of Stroke Patients
  • Moyamoya Disease

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