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

Ms. Mary Kimberly O'Connor, LCSW-R

Clinical Social Worker in Rye, NY · enumerated 2013.

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

National Provider Identifier

1336487438

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Registry record

Entity type Individual (Type 1)

Name Ms. Mary Kimberly O'Connor

Credential LCSW-R

Sex Female

Practice address Rye, NY, 10580

Phone (917) 453-2328

Enumeration date Jan 24, 2013

Last updated in NPPES May 17, 2019

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

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License R048401-1 (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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Mary O'Connor?

The National Provider Identifier (NPI) for Mary O'Connor is 1336487438, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mary O'Connor practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-05-17.