Loo, Hsiao, & Tsai, a Professional Corporation
NPI 1649599523 · Orthodontics and Dentofacial Orthopedics Dentistry · Garden Grove, CA
Loo, Hsiao, & Tsai, a Professional Corporation is a Orthodontics and Dentofacial Orthopedics Dentistry organization in Garden Grove, CA (NPI 1649599523).
Provider details
- NPI number
- 1649599523
- Entity type
- Organization
- Primary specialty
- Orthodontics and Dentofacial Orthopedics DentistryDental Providers
- Organization subpart
- No
- Authorized official
- Matthew Tsai, Ceo(562) 424-6200
- License
- 45489 (CA)
Specialties & taxonomies
Dental Providers
Dental Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Other names (DBA / former)
- Doing business as
- California Dental Specialties
Registry dates
- Enumerated
- 2010-05-18
- Last updated
- 2010-05-18
Frequently asked questions
- What is Loo, Hsiao, & Tsai, a Professional Corporation's NPI number?
- Loo, Hsiao, & Tsai, a Professional Corporation's National Provider Identifier (NPI) is 1649599523, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Loo, Hsiao, & Tsai, a Professional Corporation?
- Loo, Hsiao, & Tsai, a Professional Corporation is classified in the NPPES registry as Orthodontics and Dentofacial Orthopedics Dentistry (Dental Providers).
- Where is Loo, Hsiao, & Tsai, a Professional Corporation located?
- Loo, Hsiao, & Tsai, a Professional Corporation's practice location on file with NPPES is 12828 Harbor Blvd, Garden Grove, CA 92840-5831.
- What is Loo, Hsiao, & Tsai, a Professional Corporation's phone number?
- The practice phone number listed in the NPPES registry for Loo, Hsiao, & Tsai, a Professional Corporation is (714) 530-9801.
- Who is the authorized official for Loo, Hsiao, & Tsai, a Professional Corporation?
- The authorized official listed on Loo, Hsiao, & Tsai, a Professional Corporation's NPPES record is Matthew Tsai, Ceo. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Loo, Hsiao, & Tsai, a Professional Corporation's NPI active?
- Yes — Loo, Hsiao, & Tsai, a Professional Corporation's NPI (1649599523) is active in the NPPES registry as of the last update on 2010-05-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.