Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Koichi Yoshikawa, NCSP

School Psychologist in Dayville, CT · enumerated 2015.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1427443787

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Registry record

Entity type Individual (Type 1)

Name Dr. Koichi Yoshikawa

Credential NCSP

Sex Male

Practice address 1007 N Main St, Dayville, CT, 06241

Phone (860) 774-2020

Enumeration date Apr 3, 2015

Last updated in NPPES Apr 3, 2015

Taxonomy & licenses

103TS0200X School Psychologist Behavioral Health & Social Service Providers · License C0721014002030 (CT) Primary

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1427443787 active?

Yes, as of the latest NPPES snapshot, NPI 1427443787 is active (record last updated 2015-04-03).

How do I verify Koichi Yoshikawa's NPI record?

Cross-check NPI 1427443787 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-04-03.