Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Andrew Oostdyk, MSW

Social Worker in Devon, PA · enumerated 2023.

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

National Provider Identifier

1477239549

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Registry record

Entity type Individual (Type 1)

Name Mr. Andrew Oostdyk

Credential MSW

Sex Male

Practice address 235 W Lancaster Ave, Devon, PA, 19333

Phone (484) 551-3366

Enumeration date Jun 23, 2023

Last updated in NPPES Jun 23, 2023

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License SW140128 (PA) Primary

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 Andrew Oostdyk practice?

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

What is the NPI number for Andrew Oostdyk?

The National Provider Identifier (NPI) for Andrew Oostdyk is 1477239549, 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 2023-06-23.