Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Maureen O'Brien, PA

Physician Assistant in Ithaca, NY · enumerated 2007.

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

National Provider Identifier

1669663274

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Registry record

Entity type Individual (Type 1)

Name Maureen O'Brien

Credential PA

Sex Female

Practice address 1001 W Seneca St, Ithaca, NY, 14850

Phone (585) 273-7000

Enumeration date Aug 8, 2007

Last updated in NPPES Aug 7, 2024

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 4879 (AZ) Secondary

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 011971 (NY) Primary

PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program. About the PA credential

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

How do I verify Maureen O'Brien's NPI record?

Cross-check NPI 1669663274 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1669663274 active?

Yes, as of the latest NPPES snapshot, NPI 1669663274 is active (record last updated 2024-08-07).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-08-07.