Individual provider · Type 1 NPI

John H. Vassall Ii, MD

Internal Medicine Physician · Seattle, WA

NPI number 1619964103 Active

Practice location

515 Minor Ave, Suite 300
Seattle, WA 98104-2120

Call (206) 386-9500 Map

Fax (206) 386-9605

Mailing address

PO Box 3489
Seattle, WA 98114-3489

Specialties and licenses

TaxonomyCodeLicense
Internal Medicine Physician Primary 207R00000XMD00019787 (WA)

Internal Medicine Physician: A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medi…

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About NPI 1619964103

John H. Vassall Ii, MD's National Provider Identifier is 1619964103, issued on Sep 30, 2005. The primary taxonomy on file is Internal Medicine Physician (207R00000X), and the practice location is in Seattle, WA. The record was last updated on Jul 13, 2026.