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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

THERESA NGUYEN
NPI 1851209811
Specialist/Technologist - Speech-Language Assistant in Katy, TX

Active since August 31, 2026
21630 MERCHANTS WAY, KATY, TX 77449(832) 230-1518(281) 741-7355 Get Directions Write a Review

NPPES record added: August 31, 2026. Verified against the NPPES registry weekly; last sync: September 06, 2026.

About Theresa Nguyen NPPES

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

THERESA NGUYEN (NPI 1851209811) is an individual speech-language assistant in Katy, Texas, licensed in Texas (43624) and active in the NPI registry since August 2026.

NPPES Registry Identity

NPI1851209811
Entity TypeIndividualFemale
Primary Taxonomy2355S0801X
Provider Legal NameTHERESA NGUYEN
Location Address21630 MERCHANTS WAYKaty, TX 77449-2514
Mailing Address21630 Merchants WayKaty, TX 77449-2514 · (832) 230-1518 · Fax (281) 741-7355
Phone(832) 230-1518
Fax(281) 741-7355
Sole ProprietorYes
Enumeration DateAugust 31, 2026
NPPES CertifiedAugust 31, 2026
✔ NPI 1851209811 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialist/Technologist · Speech-Language AssistantSpeech, Language and Hearing Service Providers
Taxonomy Code2355S0801X
License✔ Licensed in TX · 43624
21630 MERCHANTS WAY, Katy, TX 77449
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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JULIA WINSKI
Physical Therapist (Pediatrics)
21630 MERCHANTS WAY
KATY, TX 77449
Harris County (832) 230-1518
JOSHUA OSHO
Speech-Language Pathologist
21630 MERCHANTS WAY
KATY, TX 77449
Harris County (281) 741-7355
CYRIL SERAFIN
Speech-Language Pathologist
21630 MERCHANTS WAY
KATY, TX 77449
Harris County (832) 230-1518
CHRISTINA LYNN FARRENS MCD, CCC-SLP
Speech-Language Pathologist
21630 MERCHANTS WAY
KATY, TX 77449
Harris County (832) 230-1518
MADISON BUSBY ANDERSON
Speech-Language Pathologist
21630 MERCHANTS WAY
KATY, TX 77449
Harris County (832) 230-1518
JAMIE WEST FLORIDA M.S., CCC-SLP
Speech-Language Pathologist
21630 MERCHANTS WAY
KATY, TX 77449
Harris County (832) 230-1518
MEGAN LOCH
Speech-Language Pathologist
21630 MERCHANTS WAY
KATY, TX 77449
Harris County (832) 230-1518
EMMANUEL CASTILLA
Specialist/Technologist (Speech-Language Assistant)
21630 MERCHANTS WAY
KATY, TX 77449
Harris County (832) 508-9609

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 Theresa Nguyen's NPI number?

The NPI number for Theresa Nguyen is 1851209811. It was assigned to this individual provider in the NPPES registry on August 31, 2026.

Where is Theresa Nguyen located?

Theresa Nguyen practices at 21630 Merchants Way, Katy, TX 77449. The listed phone number is (832) 230-1518.

What is Theresa Nguyen's specialty?

The primary specialty registered for this NPI is Specialist/Technologist, specializing in Speech-Language Assistant, with taxonomy code 2355S0801X.

When was this NPI record last updated?

The NPPES record for Theresa Nguyen was last updated on August 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 days 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.