Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Karl P Adler Jr., OD

Optometrist in Schenectady, NY · enumerated 2005.

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

National Provider Identifier

1427039817

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Registry record

Entity type Individual (Type 1)

Name Dr. Karl P Adler Jr.

Credential OD

Sex Male

Practice address 1044 State St, Schenectady, NY, 12307

Phone (518) 370-1441

Fax (518) 395-9431

Enumeration date Nov 11, 2005

Last updated in NPPES May 21, 2019

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License TUV007967 (NY) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier	Type	State	Issuer
02995513	Medicaid	NY	-
53099A	Other	NY	MEDICARE PIN
331833	Other	NY	MEDICARE OSCAR

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

Is NPI 1427039817 active?

Yes, as of the latest NPPES snapshot, NPI 1427039817 is active (record last updated 2019-05-21).

How do I verify Karl Adler's NPI record?

Cross-check NPI 1427039817 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-05-21.