GREGORY SEWELL M.S. CCC-SLP
NPI 1598996845
Speech-Language Pathologist in Duarte, CA

Q: What is Gregory Sewell's NPI number?

The NPI number for Gregory Sewell is 1598996845. It was assigned to this individual provider in the NPPES registry on August 5, 2009.

Q: What is Gregory Sewell's specialty?

The primary specialty registered for this NPI is Speech-Language Pathologist with taxonomy code 235Z00000X.

Q: When was this NPI record last updated?

The NPPES record for Gregory Sewell was last updated on January 19, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since August 05, 2009

531 LARKHALL AVE, DUARTE, CA 91010(626) 840-6139 Get Directions Write a Review

NPPES record last updated: January 19, 2015. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Gregory Sewell M.s. Ccc-slp NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GREGORY SEWELL M.S. CCC-SLP (NPI 1598996845) is an individual speech-language pathologist provider in Duarte, California, licensed in California (SP 9462) and active in the NPI registry since August 2009.

NPPES Registry Identity

NPI1598996845

Entity TypeIndividualMale

Primary Taxonomy235Z00000X

Provider Legal NameGREGORY SEWELLCredential: M.S. CCC-SLP

Location Address531 LARKHALL AVEDuarte, CA 91010-1512

Mailing Address531 Larkhall AveDuarte, CA 91010-1512 · (626) 840-6139

Phone(626) 840-6139

Sole ProprietorYes

Enumeration DateAugust 5, 2009

Last NPPES UpdateJanuary 19, 2015

✔ NPI 1598996845 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpeech-Language PathologistSpeech, Language and Hearing Service Providers

Taxonomy Code235Z00000X

License✔ Licensed in CA · SP 9462

Definition

The speech-language pathologist is the professional who engages in clinical services, prevention, advocacy, education, administration, and research in the areas of communication and swallowing across the life span from infancy through geriatrics. Speech-language pathologists address typical and atypical impairments and disorders related to communication and swallowing in the areas of speech sound production, resonance, voice, fluency, language (comprehension and expression), cognition, and feeding and swallowing.

531 LARKHALL AVE, Duarte, CA 91010

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Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gregory Sewell's NPI number?

The NPI number for Gregory Sewell is 1598996845. It was assigned to this individual provider in the NPPES registry on August 5, 2009.

Where is Gregory Sewell located?

Gregory Sewell practices at 531 Larkhall Ave, Duarte, CA 91010. The listed phone number is (626) 840-6139.

What is Gregory Sewell's specialty?

The primary specialty registered for this NPI is Speech-Language Pathologist with taxonomy code 235Z00000X.

When was this NPI record last updated?

The NPPES record for Gregory Sewell was last updated on January 19, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.