NPI Portal NPI Lookup & Verification

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

Mark Stadlen

Optometrist in Astoria, NY · enumerated 2008 · practices at 200 West Optics, LLC.

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

National Provider Identifier

1942479324

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Registry record

Entity type Individual (Type 1)
Name Mark Stadlen
Sex Male
Practice address Astoria, NY, 11103
Phone (718) 956-3000
Fax (718) 204-0227
Enumeration date Feb 29, 2008
Last updated in NPPES Aug 26, 2021

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

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License TUV0040201 (NY) Primary

Other identifiers

Identifier Type State Issuer
MS0C329210 Other NY BCBS
00695345 Medicaid NY -

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 Mark Stadlen?
The National Provider Identifier (NPI) for Mark Stadlen is 1942479324, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mark Stadlen practice?
The practice location on file with NPPES is in Astoria, NY. 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 2021-08-26.