Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Leslie My Ngoc Lam

Specialist in San Francisco, CA · enumerated 2017.

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

National Provider Identifier

1740707397

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Registry record

Entity type Individual (Type 1)

Name Ms. Leslie My Ngoc Lam

Sex Female

Practice address 1380 Howard Street., 3rd Floor, San Francisco, CA, 94103

Phone (415) 255-3559

Fax (415) 252-3035

Enumeration date Aug 24, 2017

Last updated in NPPES Jul 21, 2022

Taxonomy & licenses

174400000X Specialist Other Service Providers 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

Is NPI 1740707397 active?

Yes, as of the latest NPPES snapshot, NPI 1740707397 is active (record last updated 2022-07-21).

How do I verify Leslie Lam's NPI record?

Cross-check NPI 1740707397 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 2022-07-21.