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JOY DYFERRER M.S.CCC-SLP
NPI 1952634412
Speech-Language Pathologist in Santa Clara, CA

Active since September 15, 2009
1333 LAWRENCE EXPY, SANTA CLARA, CA 95051(408) 851-1000 Get Directions Write a Review

NPPES record last updated: March 28, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Feb 11, 2022, Feb 4, 2022 (2 updates tracked since 2022).

About Joy Dyferrer M.s.ccc-slp NPPES

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

JOY DYFERRER M.S.CCC-SLP (NPI 1952634412) is an individual speech-language pathologist provider in Santa Clara, California, licensed in California (12726) and active in the NPI registry since September 2009.

NPPES Registry Identity

NPI1952634412
Entity TypeIndividualFemale
Primary Taxonomy235Z00000X
Provider Legal NameJOY DYFERRERCredential: M.S.CCC-SLP
Location Address1333 LAWRENCE EXPYSanta Clara, CA 95051
Mailing Address3609 Copperfield Dr, #224San Jose, CA 95136-4001 · (408) 375-3242
Phone(408) 851-1000
Sole ProprietorYes
Enumeration DateSeptember 15, 2009
Last NPPES UpdateMarch 28, 20222 updates tracked since enumeration
✔ NPI 1952634412 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 · 12726
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.
1333 LAWRENCE EXPY, Santa Clara, CA 95051
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Joy Dyferrer M.s.ccc-slp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Billing Reassignment

Medicare enrollment records show Joy Dyferrer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Permanente Medical Group Inc
1.1 mi
Internal Medicine
710 LAWRENCE EXPRESSWAY
Santa Clara, CA 95051
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
NPI 1073606299 (408) 851-1000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Joy Dyferrer's NPI number?

The NPI number for Joy Dyferrer is 1952634412. It was assigned to this individual provider in the NPPES registry on September 15, 2009.

Where is Joy Dyferrer located?

Joy Dyferrer practices at 1333 Lawrence Expy, Santa Clara, CA 95051. The listed phone number is (408) 851-1000.

What is Joy Dyferrer's specialty?

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

Is Joy Dyferrer enrolled in Medicare?

Yes. Joy Dyferrer is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Joy Dyferrer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Joy Dyferrer reassigns Medicare benefits to Permanente Medical Group Inc (Santa Clara, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Joy Dyferrer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Joy Dyferrer was last updated on March 28, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.