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

Dr. Gianna Cristina Ligouri Lum

Q: What is the NPI number for Gianna Lum?

The National Provider Identifier (NPI) for Gianna Lum is 1215396411, a Type 1 (individual) record in the CMS NPPES registry.

Dentist in Pittsburg, CA · enumerated 2016 · practices at Lmc Dental.

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

National Provider Identifier

1215396411

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Registry record

Entity type Individual (Type 1)

Name Dr. Gianna Cristina Ligouri Lum

Sex Female

Practice address Pittsburg, CA, 94565

Phone (925) 431-1250

Enumeration date Feb 16, 2016

Last updated in NPPES May 2, 2017

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

Taxonomy & licenses

122300000X Dentist Dental Providers · License 100532 (CA) 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

Where does Gianna Lum practice?

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

What is the NPI number for Gianna Lum?

The National Provider Identifier (NPI) for Gianna Lum is 1215396411, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-05-02.