Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

RUTH ANN CHINCANCHAN
NPI 1609762145
Psychiatry & Neurology - Psychiatry in San Francisco, CA

Q: What is Ruth Chincanchan's NPI number?

The NPI number for Ruth Chincanchan is 1609762145. It was assigned to this individual provider in the NPPES registry on June 12, 2025.

Q: What is Ruth Chincanchan's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Ruth Chincanchan was last updated on July 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 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 June 12, 2025

675 18TH ST, SAN FRANCISCO, CA 94143(415) 476-7000 Get Directions Write a Review

NPPES record last updated: July 21, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 21, 2026, Mar 27, 2026, Jun 25, 2025 and 1 more (4 updates tracked since 2025).

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About Ruth Ann Chincanchan NPPES

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

RUTH ANN CHINCANCHAN (NPI 1609762145) is an individual psychiatry provider in San Francisco, California, licensed in California (PTL21118) and active in the NPI registry since June 2025.

NPPES Registry Identity

NPI1609762145

Entity TypeIndividualFemale

Primary Taxonomy2084P0800X

Provider Legal NameRUTH ANN CHINCANCHAN

Location Address675 18TH STSan Francisco, CA 94143-4200

Mailing Address1 Saint Francis Pl Apt 5403San Francisco, CA 94107-1339 · (210) 685-2046

Phone(415) 476-7000

Sole ProprietorNo

Enumeration DateJune 12, 2025

Last NPPES UpdateJuly 21, 20264 updates tracked since enumeration

NPPES CertifiedJuly 21, 2026

✔ NPI 1609762145 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians

Taxonomy Code2084P0800X

License✔ Licensed in CA · PTL21118

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.

Also ListedSpecialistTaxonomy 174400000X

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

675 18TH ST, San Francisco, CA 94143

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Other Providers at the Same Location NPPES 20

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

CAROLINE CHIU

Student in an Organized Health Care Education/Training Program