Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

MS. Ryuko Ishikawa, MD

Individual provider Psychiatry Physician · NPI 1053629634

MS. Ryuko Ishikawa, MD is a Psychiatry Physician in San Mateo, California. Works from 2 locations. Licensed in California.

Licensed in
CA
In the registry since
2010
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

138 E Hillsdale Blvd
San Mateo, CA 94403-2817
Phone: (415) 640-1455
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1055 W Henderson Ave, Porterville, CA 93257-1490 — (559) 788-1200

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence A42754 (CA)

Record details

NPI number1053629634
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 17, 2010
Last updated in NPPESJanuary 19, 2024
Certification dateJanuary 19, 2024
Mailing address570 Blossom Hill Rd, San Jose, CA 95123-3212

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