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Dr. William Johnathan Streiff, D.O.

Surgery Physician in Butler, PA · enumerated 2013.

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

National Provider Identifier

1104166834

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Registry record

Entity type Individual (Type 1)
Name Dr. William Johnathan Streiff
Credential D.O.
Sex Male
Practice address 129 Oneida Valley Rd Ste 111, Butler, PA, 16001
Phone (724) 431-4190
Fax (724) 431-4192
Enumeration date Feb 16, 2013
Last updated in NPPES Jul 9, 2019

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License OS020012 (PA) 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
OS020012 Other PA STATE

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 William Streiff?
The National Provider Identifier (NPI) for William Streiff is 1104166834, a Type 1 (individual) record in the CMS NPPES registry.
Where does William Streiff practice?
The practice location on file with NPPES is in Butler, PA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-07-09.