NPI Portal NPI Lookup & Verification

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

Andrew Tiongson Marquez, LVN

Licensed Vocational Nurse in Fontana, CA · enumerated 2019.

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

National Provider Identifier

1609339969

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Andrew Tiongson Marquez
Credential LVN
Sex Male
Practice address Fontana, CA, 92336
Enumeration date Apr 12, 2019
Last updated in NPPES Apr 17, 2019

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

Taxonomy & licenses

164X00000X Licensed Vocational Nurse Nursing Service Providers · License 233226 (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 Andrew Marquez practice?
The practice location on file with NPPES is in Fontana, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Andrew Marquez?
The National Provider Identifier (NPI) for Andrew Marquez is 1609339969, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-04-17.