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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

FREDA XU
NPI 1548848559
Speech-Language Pathologist in Walnut Creek, CA

Active since March 31, 2021
2021 YGNACIO VALLEY RD, WALNUT CREEK, CA 94598(925) 945-1474 Get Directions Write a Review

NPPES record last updated: October 12, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 12, 2026, Mar 31, 2021 (2 updates tracked since 2021).

About Freda Xu NPPES

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

FREDA XU (NPI 1548848559) is an individual speech-language pathologist provider in Walnut Creek, California, licensed in California (SP39778) and active in the NPI registry since March 2021.

NPPES Registry Identity

NPI1548848559
Entity TypeIndividualFemale
Primary Taxonomy235Z00000X
Provider Legal NameFREDA XU
Location Address2021 YGNACIO VALLEY RDWalnut Creek, CA 94598-3391
Mailing Address2021 Ygnacio Valley RdWalnut Creek, CA 94598-3391 · (925) 945-1474
Phone(925) 945-1474
Sole ProprietorNo
Enumeration DateMarch 31, 2021
Last NPPES UpdateOctober 12, 20262 updates tracked since enumeration
NPPES CertifiedOctober 12, 2026
✔ NPI 1548848559 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 · SP39778
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.
2021 YGNACIO VALLEY RD, Walnut Creek, CA 94598
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Other Providers at the Same Location NPPES 18

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

KEVIN FRANCIS DEGNAN M.D.
Plastic Surgery
2021 YGNACIO VALLEY RD, BUILDING H. SUITE 202
WALNUT CREEK, CA 94598
Contra Costa County (925) 935-4500
MRS. CAROL JEAN LAYNE M.S.
Speech-Language Pathologist
2021 YGNACIO VALLEY RD, C-202
WALNUT CREEK, CA 94598
Contra Costa County (925) 945-1474
DR. STEVEN LOUIS CADEMARTORI D.D.S.
Dentist (General Practice)
2021 YGNACIO VALLEY RD, H-201
WALNUT CREEK, CA 94598
Contra Costa County (925) 932-3399
MR. WILLIAM MICHAEL GAZDAR D.C. C.C.S.P.,Q.M.E.
Chiropractor (Sports Physician)
2021 YGNACIO VALLEY RD, SUITE C-204
WALNUT CREEK, CA 94598
Contra Costa County (925) 939-2225
TOTAL HEALTH CHIROPRACTIC
Chiropractor
2021 YGNACIO VALLEY RD, C204
WALNUT CREEK, CA 94598
Contra Costa County (925) 939-2225
ANGELA YING TU L AC DMD
Acupuncturist
2021 YGNACIO VALLEY RD, SUITE D
WALNUT CREEK, CA 94598
Contra Costa County (925) 932-4002
DR. ADRIANO BOTTENE DDS
Dentist
2021 YGNACIO VALLEY RD, SUITE H-201
WALNUT CREEK, CA 94598
Contra Costa County (925) 933-3912
DR. MICHAEL STUART LUCAS DMD
Dentist (Prosthodontics)
2021 YGNACIO VALLEY RD, B2
WALNUT CREEK, CA 94598
Contra Costa County (925) 933-4522

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 Freda Xu's NPI number?

The NPI number for Freda Xu is 1548848559. It was assigned to this individual provider in the NPPES registry on March 31, 2021.

Where is Freda Xu located?

Freda Xu practices at 2021 Ygnacio Valley Rd, Walnut Creek, CA 94598. The listed phone number is (925) 945-1474.

What is Freda Xu'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 Freda Xu was last updated on October 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.