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

Mrs. Geiza Izabel Keller-Souza, SLP A

Speech-Language Assistant in Silver Spring, MD · enumerated 2009.

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

National Provider Identifier

1548597859

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Registry record

Entity type Individual (Type 1)

Name Mrs. Geiza Izabel Keller-Souza

Credential SLP A

Sex Female

Practice address Silver Spring, MD, 20904

Phone (301) 204-9608

Enumeration date Nov 6, 2009

Last updated in NPPES May 14, 2018

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

Taxonomy & licenses

222Q00000X Developmental Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers Secondary

2355S0801X Speech-Language Assistant Speech, Language and Hearing Service Providers · License 00119A (MD) Secondary

2355S0801X Speech-Language Assistant Speech, Language and Hearing Service Providers · License SLPA000001 (DC) Primary

Other identifiers

Identifier	Type	State	Issuer
00119A	Other	MD	SPEECH LANGUAGE PATHOLOGY ASSISTANT
SLPA000001	Other	DC	SPEECH LANGUAGE PATHOLOGY ASSISTANT

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 1548597859 active?

Yes, as of the latest NPPES snapshot, NPI 1548597859 is active (record last updated 2018-05-14).

How do I verify Geiza Keller-Souza's NPI record?

Cross-check NPI 1548597859 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-05-14.