Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Loo, Hsiao, & Tsai, A Professional Corporation

Orthodontics and Dentofacial Orthopedics Dentistry in Garden Grove, CA · enumerated 2010 · authorized official Matthew Tsai, Ceo.

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

National Provider Identifier

1649599523

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Registry record

Entity type Organization (Type 2)

Legal business name Loo, Hsiao, & Tsai, A Professional Corporation

Other name <Unavail>

Practice address 12828 Harbor Blvd, 350, Garden Grove, CA, 92840

Phone (714) 530-9801

Fax (714) 530-7824

Enumeration date May 18, 2010

Last updated in NPPES May 18, 2010

Taxonomy & classification

1223E0200X Endodontics Dental Providers · License 45489 (CA) Secondary

1223X0400X Orthodontics and Dentofacial Orthopedics Dentistry Dental Providers · License 45269 (CA) Primary

Authorized official

Name Matthew Tsai

Title Ceo

Phone (562) 424-6200

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

What type of organization is Loo, Hsiao, & Tsai, A Professional Corporation?

Loo, Hsiao, & Tsai, A Professional Corporation is registered in NPPES as a Orthodontics and Dentofacial Orthopedics Dentistry (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-05-18.