NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

John W Allen, D.O.

Adult Medicine Physician in Sunnyside, WA · enumerated 2006 · practices at Heartlinks.

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

National Provider Identifier

1497818348

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Registry record

Entity type Individual (Type 1)
Name John W Allen
Credential D.O.
Sex Male
Practice address Sunnyside, WA, 98944
Phone (509) 837-6174
Fax (509) 837-6225
Enumeration date Dec 19, 2006
Last updated in NPPES Jul 8, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207QA0505X Adult Medicine Physician Allopathic & Osteopathic Physicians · License OP00000786 (WA) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier Type State Issuer
1068857 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

What is the NPI number for John Allen?
The National Provider Identifier (NPI) for John Allen is 1497818348, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Allen practice?
The practice location on file with NPPES is in Sunnyside, WA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.