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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 30 days.

RIANNAJOY D MATSUO
NPI 1427979707
Licensed Vocational Nurse in Menlo Park, CA

Active since July 23, 2026
795 WILLOW RD BLDG 332, MENLO PARK, CA 94025(650) 376-8641 Get Directions Write a Review

NPPES record added: July 23, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Riannajoy D Matsuo NPPES

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

RIANNAJOY D MATSUO (NPI 1427979707) is an individual licensed vocational nurse in Menlo Park, California, licensed in California (738361) and active in the NPI registry since July 2026.

NPPES Registry Identity

NPI1427979707
Entity TypeIndividualFemale
Primary Taxonomy164X00000X
Provider Legal NameRIANNAJOY D MATSUO
Location Address795 WILLOW RD BLDG 332Menlo Park, CA 94025-2539
Mailing Address795 Willow Rd Bldg 332Menlo Park, CA 94025-2539 · (650) 376-8641
Phone(650) 376-8641
Sole ProprietorNo
Enumeration DateJuly 23, 2026
NPPES CertifiedJuly 23, 2026
✔ NPI 1427979707 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyLicensed Vocational NurseNursing Service Providers
Taxonomy Code164X00000X
License✔ Licensed in CA · 738361
Definition

A licensed vocational nurse with post-high school vocational training and practical experience in the provision of nursing care at a level less than that required for certification as a Registered Nurse. [An alternate term for licensed practical nurse arising from difference in occupational titles between states and post-high school training programs and institutions.] Requirements for education, experience, licensure, and job responsibilities vary among the states.

795 WILLOW RD BLDG 332, Menlo Park, CA 94025
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Other Providers at the Same Location NPPES 19

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

MRS. JEANNINE MARIE TROTT
Counselor (Addiction (Substance Use Disorder))
795 WILLOW RD BLDG 332
MENLO PARK, CA 94025
San Mateo County (650) 324-1470
GABRIELA SANDOVAL-OSUNA
Licensed Vocational Nurse
795 WILLOW RD BLDG 332
MENLO PARK, CA 94025
San Mateo County (650) 324-1470
MARLO ORNELAS
Counselor (Addiction (Substance Use Disorder))
795 WILLOW RD BLDG 332
MENLO PARK, CA 94025
San Mateo County (650) 324-1470
MARIA MIKOYAN
Counselor (Addiction (Substance Use Disorder))
795 WILLOW RD BLDG 332
MENLO PARK, CA 94025
San Mateo County (214) 379-3300
MELINDA MARIE RAMIREZ RADT
Counselor (Addiction (Substance Use Disorder))
795 WILLOW RD BLDG 332
MENLO PARK, CA 94025
San Mateo County (650) 324-1470
CARLIN ENG
Peer Specialist
795 WILLOW RD BLDG 332
MENLO PARK, CA 94025
San Mateo County (650) 324-1470
SEANDY GARCIA
Counselor (Addiction (Substance Use Disorder))
795 WILLOW RD BLDG 332
MENLO PARK, CA 94025
San Mateo County (650) 324-1470
MR. MANUEL A VELASCO JR.
Counselor (Addiction (Substance Use Disorder))
795 WILLOW RD BLDG 332
MENLO PARK, CA 94025
San Mateo County (650) 376-8641

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 Riannajoy Matsuo's NPI number?

The NPI number for Riannajoy Matsuo is 1427979707. It was assigned to this individual provider in the NPPES registry on July 23, 2026.

Where is Riannajoy Matsuo located?

Riannajoy Matsuo practices at 795 Willow Rd Bldg 332, Menlo Park, CA 94025. The listed phone number is (650) 376-8641.

What is Riannajoy Matsuo's specialty?

The primary specialty registered for this NPI is Licensed Vocational Nurse with taxonomy code 164X00000X.

When was this NPI record last updated?

The NPPES record for Riannajoy Matsuo was last updated on July 23, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.