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WILLIAM R HENDERSON JR.
NPI 1639254436
Internal Medicine - Allergy & Immunology in Seattle, WA

Active since October 27, 2006
UNIVERSITY OF WASHINGTON MEDICAL CTR, 1959 NE PACIFIC ST, SEATTLE, WA 98195(206) 598-4615 Get Directions Write a Review

NPPES record last updated: December 3, 2013. Verified against the NPPES registry weekly; last sync: October 04, 2026.

About William R Henderson Jr. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM R HENDERSON JR. (NPI 1639254436) is an individual allergy & immunology provider in Seattle, Washington, licensed in Washington (MD00017040) and active in the NPI registry since October 2006.

NPPES Registry Identity

NPI1639254436
Entity TypeIndividualMale
Primary Taxonomy207RA0201X
Provider Legal NameWILLIAM R HENDERSON JR.
Location AddressUNIVERSITY OF WASHINGTON MEDICAL CTR, 1959 NE PACIFIC STSeattle, WA 98195-6166
Mailing AddressPo Box 50095Seattle, WA 98145-5095 · (206) 543-6420
Phone(206) 598-4615
Sole ProprietorNo
Enumeration DateOctober 27, 2006
Last NPPES UpdateDecember 3, 2013
✔ NPI 1639254436 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Allergy & ImmunologyAllopathic & Osteopathic Physicians
Taxonomy Code207RA0201X
License✔ Licensed in WA · MD00017040
Definition
An internist doctor of osteopathy that specializes in the treatment of allergy and immunologic disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine can obtain a Certificate of Special Qualifications in the field of Allergy & Immunology.
Also ListedInternal MedicineTaxonomy 207R00000X · License MD00017040 (WA)
UNIVERSITY OF WASHINGTON MEDICAL CTR, Seattle, WA 98195
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Other Identifiers 5

Medicare UPINA04703
Medicaid1639254436WA
Other0231176WA · L&i
Medicare PIN000102197WA
Other1850Internal Id-motor Vehicle Id

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

BRENDA M SANDMAIER
Internal Medicine (Hematology & Oncology)
UNIVERSITY OF WASHINGTON MEDICAL CTR, 1959 NE PACIFIC ST
SEATTLE, WA 98195
King County (206) 288-1000
PATRICK C FREENY
Radiology (Diagnostic Radiology)
UNIVERSITY OF WASHINGTON MEDICAL CTR, 1959 NE PACIFIC ST
SEATTLE, WA 98195
King County (206) 598-6214
GEORGE A OJEMANN
Neurological Surgery
UNIVERSITY OF WASHINGTON MEDICAL CTR, 1959 NE PACIFIC ST
SEATTLE, WA 98195
King County (206) 598-5637
CAROL M BUCHTER
Internal Medicine (Cardiovascular Disease)
UNIVERSITY OF WASHINGTON MEDICAL CTR, 1959 NE PACIFIC ST
SEATTLE, WA 98195
King County (206) 598-4300
MARSHALL SCOTT HORWITZ
Medical Genetics (Clinical Genetics (M.D.))
UNIVERSITY OF WASHINGTON MEDICAL CTR, 1959 NE PACIFIC ST
SEATTLE, WA 98195
King County (206) 616-2135
CORINNE LINA FLIGNER
Pathology (Anatomic Pathology & Clinical Pathology)
UNIVERSITY OF WASHINGTON MEDICAL CTR, 1959 NE PACIFIC ST
SEATTLE, WA 98195
King County (206) 598-6400
EDUS HOUSTON WARREN III
Internal Medicine (Hematology & Oncology)
UNIVERSITY OF WASHINGTON MEDICAL CTR, 1959 NE PACIFIC ST
SEATTLE, WA 98195
King County (206) 288-1000
GREGORY DEMBO
Anesthesiology
UNIVERSITY OF WASHINGTON MEDICAL CTR, 1959 NE PACIFIC ST
SEATTLE, WA 98195
King County (206) 543-8606

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Henderson's NPI number?

The NPI number for William Henderson is 1639254436. It was assigned to this individual provider in the NPPES registry on October 27, 2006.

Where is William Henderson located?

William Henderson practices at University Of Washington Medical Ctr 1959 NE Pacific St, Seattle, WA 98195. The listed phone number is (206) 598-4615.

What is William Henderson's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Allergy & Immunology, with taxonomy code 207RA0201X.

When was this NPI record last updated?

The NPPES record for William Henderson was last updated on December 3, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.