Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William D. Rubin, M.D.

Medical Oncology Physician in Bellingham, WA · enumerated 2005.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1477550796

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Registry record

Entity type Individual (Type 1)

Name William D. Rubin

Credential M.D.

Sex Male

Practice address 3301 Squalicum Pkwy, Bellingham, WA, 98225

Phone (360) 788-8222

Fax (360) 788-7759

Enumeration date Jul 1, 2005

Last updated in NPPES Jan 8, 2021

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License MD00030567 (WA) Secondary

174400000X Specialist Other Service Providers · License MD00030567 (WA) Secondary

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians · License MD00030567 (WA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
0229981	Other	WA	L&I AND CRIME VICTIMS
8236358	Medicaid	WA	-
9285RO	Other	WA	REGENCE
0230383	Other	WA	L&I
5257668	Other	WA	AETNA
1235176264	Medicaid	WA	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify William Rubin's NPI record?

Cross-check NPI 1477550796 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1477550796 active?

Yes, as of the latest NPPES snapshot, NPI 1477550796 is active (record last updated 2021-01-08).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-01-08.