Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cindy Ann Grellner

Speech-Language Pathologist in Los Angeles, CA · enumerated 2007.

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

National Provider Identifier

1427275643

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Registry record

Entity type Individual (Type 1)

Name Cindy Ann Grellner

Sex Female

Practice address 1111 W 6th St, Suite 11, Los Angeles, CA, 90017

Phone (417) 612-4481

Enumeration date Apr 19, 2007

Last updated in NPPES Feb 23, 2016

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License SP22724 (CA) Primary

Other identifiers

Identifier	Type	State	Issuer
467375309	Medicaid	MO	-

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 1427275643 active?

Yes, as of the latest NPPES snapshot, NPI 1427275643 is active (record last updated 2016-02-23).

How do I verify Cindy Grellner's NPI record?

Cross-check NPI 1427275643 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 2016-02-23.