Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Stephen J Pieniak, MD

Emergency Medical Services (Emergency Medicine) Physician in Bremerton, WA · enumerated 2006.

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

National Provider Identifier

1447281225

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Registry record

Entity type Individual (Type 1)

Name Stephen J Pieniak

Credential MD

Sex Male

Practice address 2520 Cherry Ave, Bremerton, WA, 98310

Phone (360) 377-3911

Enumeration date Jul 6, 2006

Last updated in NPPES May 21, 2008

Taxonomy & licenses

207PE0004X Emergency Medical Services (Emergency Medicine) Physician Allopathic & Osteopathic Physicians · License MD00036827 (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
8252512	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Stephen Pieniak practice?

The practice location on file with NPPES is in Bremerton, WA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Stephen Pieniak?

The National Provider Identifier (NPI) for Stephen Pieniak is 1447281225, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-05-21.