Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mairead Joan Torsney-Weir, MD

Geriatric Medicine (Family Medicine) Physician in Marina Del Rey, CA · enumerated 2009 · practices at The Regents of the University of California.

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

National Provider Identifier

1669607511

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Registry record

Entity type Individual (Type 1)

Name Mairead Joan Torsney-Weir

Credential MD

Sex Female

Practice address 4560 Admiralty Way Ste 100, Marina Del Rey, CA, 90292

Phone (310) 827-3700

Fax (310) 578-5379

Enumeration date May 21, 2009

Last updated in NPPES Sep 4, 2024

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License A124813 (CA) Secondary

207QG0300X Geriatric Medicine (Family Medicine) Physician Allopathic & Osteopathic Physicians · License A124813 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

Is NPI 1669607511 active?

Yes, as of the latest NPPES snapshot, NPI 1669607511 is active (record last updated 2024-09-04).

How do I verify Mairead Torsney-Weir's NPI record?

Cross-check NPI 1669607511 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 2024-09-04.