Alexander Sy, DDS
NPI 1568934545 · Orthodontics and Dentofacial Orthopedics Dentistry · Rosemead, CA
Alexander Sy, DDS is a Orthodontics and Dentofacial Orthopedics Dentistry provider in Rosemead, CA (NPI 1568934545).
Provider details
- NPI number
- 1568934545
- Entity type
- Individual
- Primary specialty
- Orthodontics and Dentofacial Orthopedics DentistryDental Providers
- Credential
- DDS
- Sex
- Male
- Sole proprietor
- Yes
- License
- 103437 (CA)
Specialties & taxonomies
Dental Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 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
Registry dates
- Enumerated
- 2019-01-01
- Last updated
- 2019-01-01
Frequently asked questions
- What is Alexander Sy's NPI number?
- Alexander Sy's National Provider Identifier (NPI) is 1568934545, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexander Sy's specialty?
- Alexander Sy is listed in the NPPES registry with a primary specialty of Orthodontics and Dentofacial Orthopedics Dentistry (Dental Providers).
- Where is Alexander Sy located?
- Alexander Sy's practice location on file with NPPES is 9368 Valley Blvd Ste 201, Rosemead, CA 91770-1990.
- What is Alexander Sy's phone number?
- The practice phone number listed in the NPPES registry for Alexander Sy is (626) 401-1988.
- Is Alexander Sy's NPI active?
- Yes — Alexander Sy's NPI (1568934545) is active in the NPPES registry as of the last update on 2019-01-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.