Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. William Marvin Gaskill Sr., MD

Individual provider Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · NPI 1851636211

Dr. William Marvin Gaskill Sr., MD is a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Friday Harbor, Washington. Practices as a sole proprietor. Licensed in Washington.

Licensed in
WA
In the registry since
2012
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

17 Indian Beach Ln
Friday Harbor, WA 98250
Phone: (360) 317-6711
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (primary) Taxonomy 208G00000X · Licence MD00016482 (WA)

Record details

NPI number1851636211
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedDecember 11, 2012
Last updated in NPPESDecember 11, 2012