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John N Diaconou, MD PS

Vascular Surgery Physician in Auburn, WA · enumerated 2006.

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

National Provider Identifier

1821105164

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Registry record

Entity type Individual (Type 1)
Name John N Diaconou
Credential MD PS
Sex Male
Practice address 202 N Division St, Ste 402, Auburn, WA, 98001
Phone (253) 833-8032
Fax (253) 833-8081
Enumeration date Aug 24, 2006
Last updated in NPPES Mar 1, 2011

Taxonomy & licenses

2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians · License MD00018742 (WA) Primary

Other identifiers

Identifier Type State Issuer
CH9408 Other WA RR MEDICARE GROUP #
1779008 Medicaid WA -
230000055 Other WA RAILROAD MEDICARE PIN
0265721 Other WA STATE L&I
0152713 Other WA LABOR AND INDUSTRIES
0244706 Other WA STATE L&I

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 John Diaconou?
John Diaconou is registered in NPPES with the primary taxonomy of Vascular Surgery 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-03-01.