NPI Portal NPI Lookup & Verification

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

Mrs. Catherine Difalco, OPTICIAN

Optician in Mamaroneck, NY · enumerated 2007 · practices at Yu Wei Acupunture P.C..

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

National Provider Identifier

1609991157

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Registry record

Entity type Individual (Type 1)
Name Mrs. Catherine Difalco
Credential OPTICIAN
Sex Female
Practice address Mamaroneck, NY, 10543
Phone (914) 381-1159
Fax (914) 381-1932
Enumeration date Mar 20, 2007
Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

156FX1800X Optician Eye and Vision Services Providers · License 005775 (NY) 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.

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Frequently asked questions

Is NPI 1609991157 active?
Yes, as of the latest NPPES snapshot, NPI 1609991157 is active (record last updated 2007-07-08).
How do I verify Catherine Difalco's NPI record?
Cross-check NPI 1609991157 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 2007-07-08.