William Hemsley Merwin, MD| Critical Care Medicine | MedStar Health
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William Hemsley Merwin, MD
Provider is directly employed by MedStar Health

Specialties: Critical Care Medicine

Languages: English

Only sees patients in a hospital setting and does not schedule visits.

About me

As a Board Certified/Board eligible critical care physician, all conditions requiring intensive care in the medical, surgical, or neurosciences ICU are treated.

Conditions and procedures

Conditions I treat

  • Asthma
  • Chronic Cough
  • Circadian Rhythm Disorder
  • Delayed Sleep Phase Syndrome
  • Dyspnea
  • Emphysema
  • Hypoxia
  • Narcolepsy
  • Pneumonia
  • Pneumothorax
  • Pulmonary Embolism
  • Rem Sleep Behavior Disorder
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Procedures I perform

  • Advanced Sleep Phase Syndrome Treatment
  • Bronchoscopy
  • Delayed Sleep Phase Syndrome Treatment
  • Home Sleep Apnea Test
  • Hypoglossal Nerve Stimulation
  • Idiopathic Hypersomnia Treatment
  • Polysomnography
  • Shift Work Sleep Disorder Treatment
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Practice locations

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18101 Prince Philip Dr.
Olney, MD, 20832

301-774-8882
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miles away

5601 Loch Raven Blvd.
Baltimore, MD, 21239

443-444-8000
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miles away

9000 Franklin Square Dr.
Baltimore, MD, 21237

443-777-7000
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miles away

201 E. University Pkwy.
Baltimore, MD, 21218

410-554-2000
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miles away

Education

Board Certification: American Board of Internal Medicine, Critical Care Medicine

Fellowship: John Hopkins University (2026)

Residency: Georgetown University School of Medicine GME (2021)

Residency: University of Kentucky College of Medicine (2018)

Internship: SUNY Upstate University Hospital (2016)

Medical School: Georgetown University School of Medicine (2015)