Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. Irwin J Klein, OPHTHALMIC DISPENSER
Optician in New York, NY · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1992824015
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Registry record
Entity type Individual (Type 1)
Name Mr. Irwin J Klein
Credential OPHTHALMIC DISPENSER
Sex Male
Practice address 40 W 57th St, New York, NY, 10019
Phone (212) 581-4967
Fax (212) 586-6296
Enumeration date Mar 28, 2007
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
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.
Frequently asked questions
Where does Irwin Klein practice?
The practice location on file with NPPES is in New York, NY. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Irwin Klein?
The National Provider Identifier (NPI) for Irwin Klein is 1992824015, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.