William Hemsley Merwin, MD
Provider is directly employed by MedStar Health
Provider is directly employed by MedStar Health
Specialties: Critical Care Medicine, Pulmonary Medicine, Sleep 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
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
Practice locations
Distance from Change Location Enter your Location
5601 Loch Raven Blvd
Russell Morgan Bldg Ste 500
Baltimore, MD, 21239
Insurance
This list represents the major payors accepted by MedStar Health. NOTE: Payor contracts change and not all plans associated with a payor may be covered. Payors may offer multiple plans. If you have a question related to your insurance, please contact your insurance plan directly. Contact information is located on your health insurance ID card. *Denotes limited participation. Specific providers and practices may NOT be participating. Please contact your insurance plan directly.
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List of insurance plans we accept
- Aetna
- CareFirst BlueCross BlueShield of Maryland
- Cigna Health Care
- Kaiser Permanente*
- MedStar Select (Administered by CareFirst)
- United HealthCare
- Aetna
- CareFirst BlueCross BlueShield of Maryland
- Healthspring
- Humana
- Medicare & Railroad Medicare
- United HealthCare
- Aetna Better Health of Maryland *
- Medical Assistance/Medicaid
- MedStar Family Choice MD
- Priority Partners *
- United HealthCare Community Health Plan MD
- Wellpoint MD
- AmeriHealth Caritas
- Health Services For Children With Special Needs (HSCSN)
- Medical Assistance/Medicaid
- MedStar Family Choice DC
- Johns Hopkins Employer Health Programs *
- Johns Hopkins US Family Health Plan *
- MultiPlan
- Private Healthcare Systems
- Tricare/Humana Military
- VA Community Care Network (VACCN)
Education
Board Certification: American Board of Internal Medicine, Pulmonary Disease
Board Certification: American Board of Internal Medicine, Internal 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)