Medical School Universidad Central del Caribe (1992)
Internship George Washington University Hospital (1993), Internal Medicine
Residency George Washington University Hospital (1996), Neurology
Fellowship George Washington University Hospital (1997), Vascular Neurology
Fellowship Hermann Hospital (1998), Neurocritical Care

Specialty Areas

Clinical Interest

  • Amaurosis Fugax
  • Aphasia
  • Basilar Occlusion & Stenosis
  • Binswanger's Disease
  • Brain Hemorrhage
  • Carotid Occlusion Stenosis
  • Carotid Stenosis
  • Central Nervous System (CNS) Vasculitis
  • Cerebral Artery Occlusion/Stenosis
  • Cerebral Ischemic Disease
  • Cerebral Sinus Thrombosis
  • Cerebral Vasculitis
  • Fabry's Disease with Stroke or Transient Ischemic Attack (TIA)
  • Fibromuscular Dysplasia with Stroke or Transient Ischemic Attack (TIA)
  • Hypercoagulable States with Stroke or Transient Ischemic Attack (TIA)
  • Lacunar Stroke (Small Vessel Disease)
  • Moyamoya Disease
  • Retinal Artery Occlusion
  • Spinal Stroke
  • Stroke
  • Thrombosis
  • Transient Ischemic Attack (TIA)
  • Vertebral Dissection
  • Vertebral Occlusion & Stenosis

Research Interest

  • Large Vessel Disease Ischemia
  • Preventative agents in Stroke
  • Reactivation of Stroke Symptoms
  • Small Subcortical Strokes
  • Transcranial doppler changes Post radiation


Featured Publications LegendFeatured Publications

Neurologic Presentations of Infective Endocarditis
Johnson, MD; Johnson, CD Neurologic Clinics: Neurology and Systemic Disease February 2010 1/28 311-321
Transcranial Doppler: An Introduction for Primary Care Physicians
Kassab MY, Majid A, Farooq MU, Azbary H, Hershey LA, Bednarczyk EM, Graybeal DF, Johnson MD J Am Board Fam Med January 2007 20 65-71

Honors & Awards

  • Stroke Voluntee Award
    Dallas/Fort Worth and East Texas AHA South Central Affiliate (2007)
  • Gold Level of service PACT
    Employee Recognition Program (2006)
  • Trephined Cranium Award
    Resident Award for Excellence in Teaching (2005)
  • American Academy of Neurology Scholarship for Residents
    Selected by faculty in residency program (96)
  • Alpha Omega Alpha
    Since medical school cum laude graduation (92)

Professional Associations/Affiliations

  • American Academy of Neurology
  • American Society of Neuroimaging
  • American Stroke Association
  • Neurocritical Care Society
  • World Stroke Organization