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

SANDRA VALERIA AYLLON
NPI 1629982384
Counselor in San Mateo, CA

Q: What is Sandra Ayllon's NPI number?

The NPI number for Sandra Ayllon is 1629982384. It was assigned to this individual provider in the NPPES registry on September 30, 2026. The provider is also known as Sandra Valeria Ayllon Lopez.

Q: What is Sandra Ayllon's specialty?

The primary specialty registered for this NPI is Counselor with taxonomy code 101Y00000X.

Q: When was this NPI record last updated?

The NPPES record for Sandra Ayllon was last updated on September 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.

Active since September 30, 2026

2025 KEHOE AVE, SAN MATEO, CA 94403(650) 312-7542 Get Directions Write a Review

NPPES record added: September 30, 2026. Verified against the NPPES registry weekly; last sync: October 04, 2026.

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About Sandra Valeria Ayllon NPPES

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

SANDRA VALERIA AYLLON (NPI 1629982384) is an individual counselor in San Mateo, California and active in the NPI registry since September 2026.

NPPES Registry Identity

NPI1629982384

Entity TypeIndividualFemale

Primary Taxonomy101Y00000X

Provider Legal NameSANDRA VALERIA AYLLON

Location Address2025 KEHOE AVESan Mateo, CA 94403-1061

Mailing Address2025 Kehoe AveSan Mateo, CA 94403-1061 · (650) 312-7542

Phone(650) 312-7542

Sole ProprietorNo

Enumeration DateSeptember 30, 2026

NPPES CertifiedSeptember 30, 2026

✔ NPI 1629982384 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselorBehavioral Health & Social Service Providers

Taxonomy Code101Y00000X

Definition

A provider who is trained and educated in the performance of behavior health services through interpersonal communications and analysis. Training and education at the specialty level usually requires a master's degree and clinical experience and supervision for licensure or certification.

2025 KEHOE AVE, San Mateo, CA 94403

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Other Names 1

Professional Name (2)Sandra Valeria Ayllon Lopez

Other Providers at the Same Location NPPES 2

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

STEVEN CHANG

Counselor (School)

2025 KEHOE AVE
SAN MATEO, CA 94403

San Mateo County (650) 312-7893

LESLIE PEREZ MS AND PPS

Psychologist (School)

2025 KEHOE AVE
SAN MATEO, CA 94403

San Mateo County (650) 312-7660

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 Sandra Ayllon's NPI number?

The NPI number for Sandra Ayllon is 1629982384. It was assigned to this individual provider in the NPPES registry on September 30, 2026. The provider is also known as Sandra Valeria Ayllon Lopez.

Where is Sandra Ayllon located?

Sandra Ayllon practices at 2025 Kehoe Ave, San Mateo, CA 94403. The listed phone number is (650) 312-7542.

What is Sandra Ayllon's specialty?

The primary specialty registered for this NPI is Counselor with taxonomy code 101Y00000X.

When was this NPI record last updated?

The NPPES record for Sandra Ayllon was last updated on September 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.