Day III

Day III is a healthcare organization registered as Clinic/Center in Hawthorne, CA, holding Type 2 (organization) NPI 1720221872 since 2009. The authorized official on file is Thomas Tweh, President/Ceo.

✓ Active NPI ✓ Valid NPI checksum

NPI	1720221872
Entity type	Organization (Type 2)
Legal business name	Day III
Practice address	11823 TRURO AVE APT A, Hawthorne, CA, 90250
Phone	3109978213
Enumeration date	2009-04-18
Last updated in NPPES	2009-04-18

Authorized official

Name	Thomas Tweh
Title	President/Ceo
Phone	3109978213

Taxonomy & classification

Taxonomy code	Specialty	Primary	License	State
261Q00000X	Clinic/Center	Primary	—	—

Copy-ready billing details

Provider: Day III
NPI: 1720221872
Taxonomy: 261Q00000X (Clinic/Center)
Address: 11823 TRURO AVE APT A, Hawthorne, CA, 90250

Verify this record

Cross-check NPI 1720221872 against the authoritative CMS record: view Day III on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

Where is Day III located?

The practice location on file with NPPES is in Hawthorne, CA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2009-04-18. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-10. Provider record last updated 2009-04-18.