Individual provider · Type 1 NPI

William Sprague Trask Iv, DO

Anesthesiology Physician · Boulder, CO

NPI number 1184706608 Active

Practice location

4747 Arapahoe Ave
Boulder, CO 80303-1131

Call (303) 415-2532 Map

Fax (303) 785-1725

Mailing address

PO Box 21147
Boulder, CO 80308-4147

Specialties and licenses

TaxonomyCodeLicense
Anesthesiology Physician Primary 207L00000X49491 (CO)
Anesthesiology Physician 207L00000XOP60150344 (WA)
Anesthesiology Physician 207L00000XOL20000111 (WA)

Anesthesiology Physician: An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provi…

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About NPI 1184706608

William Sprague Trask Iv, DO's National Provider Identifier is 1184706608, issued on Oct 20, 2006. The primary taxonomy on file is Anesthesiology Physician (207L00000X), and the practice location is in Boulder, CO. The record was last updated on Sep 14, 2026.