Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Zafer Yildirim, MD,PHD

Medical Oncology Physician in Longview, WA · enumerated 2005.

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

National Provider Identifier

1508858812

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Registry record

Entity type Individual (Type 1)

Name Zafer Yildirim

Credential MD,PHD

Sex Male

Practice address 1615 Delaware St, Longview, WA, 98632

Phone (360) 414-7878

Fax (360) 414-7876

Enumeration date Aug 22, 2005

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MD00043047 (WA) Secondary

207RH0000X Hematology (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License MD00043047 (WA) Secondary

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians · License MD00043047 (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
8386294	Medicaid	WA	-
8930190	Other	WA	CRIME VICTIMS
P00154540	Other	-	RR MEDICARE
029007	Medicaid	OR	-
221981	Other	WA	LABOR & IND.

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

What specialty is Zafer Yildirim?

Zafer Yildirim is registered in NPPES with the primary taxonomy of Medical Oncology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

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Lan Pham Internal Medicine Physician · Longview, WA NPI 1548264252 Tsz-Ming Chow Neurology Physician · Longview, WA NPI 1689679714 Lisa Evans Family Medicine Physician · Longview, WA NPI 1891790580 Lawrence Neville Neurology Physician · Longview, WA NPI 1134124639 R. Hughey Internal Medicine Physician · Longview, WA NPI 1316943590 Linda Johnston Adult Health Nurse Practitioner · Longview, WA NPI 1376549337 Leena Carriere Anesthesiology Physician · Longview, WA NPI 1982600805 Michael Bartlett Family Medicine Physician · Longview, WA NPI 1356348502

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.