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MS. RYUKO ISHIKAWA MD
NPI 1053629634
Psychiatry & Neurology - Psychiatry in San Mateo, CA

Active since September 17, 2010
138 E HILLSDALE BLVD, SAN MATEO, CA 94403(415) 640-1455 Get Directions Write a Review

NPPES record last updated: January 19, 2024. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 14, 2021, Feb 5, 2019 (2 updates tracked since 2019).

About Ms. Ryuko Ishikawa Md NPPES

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

MS. RYUKO ISHIKAWA MD (NPI 1053629634) is an individual psychiatry provider in San Mateo, California, licensed in California (A42754) and active in the NPI registry since September 2010. She maintains a secondary practice location in Porterville.

NPPES Registry Identity

NPI1053629634
Entity TypeIndividualFemale
Primary Taxonomy2084P0800X
Provider Legal NameMS. RYUKO ISHIKAWACredential: MD
Location Address138 E HILLSDALE BLVDSan Mateo, CA 94403-2817
Mailing Address570 Blossom Hill RdSan Jose, CA 95123-3212 · (855) 799-4647
Phone(415) 640-1455
Sole ProprietorNo
Enumeration DateSeptember 17, 2010
Last NPPES UpdateJanuary 19, 20242 updates tracked since enumeration
NPPES CertifiedJanuary 19, 2024
✔ NPI 1053629634 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in CA · A42754
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
138 E HILLSDALE BLVD, San Mateo, CA 94403
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Other Names 1

Former Name (1)Ryuko Hiramatsu Md

Secondary Practice Location 1

Location 11055 W Henderson AvePorterville, CA 93257-1490 · Phone (559) 788-1200

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 Ryuko Ishikawa's NPI number?

The NPI number for Ryuko Ishikawa is 1053629634. It was assigned to this individual provider in the NPPES registry on September 17, 2010. The provider is also known as Ryuko Hiramatsu MD.

Where is Ryuko Ishikawa located?

Ryuko Ishikawa practices at 138 E Hillsdale Blvd, San Mateo, CA 94403. The listed phone number is (415) 640-1455.

What is Ryuko Ishikawa's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

When was this NPI record last updated?

The NPPES record for Ryuko Ishikawa was last updated on January 19, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.