Arthur Siu, O.D.
NPI 1942228929 · Optometrist · Oakland, CA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Arthur Siu, O.D. is a Optometrist provider in Oakland, CA (NPI 1942228929).
Provider details
- NPI number
- 1942228929
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 5780 (CA)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
- 2006-07-17
- Last updated
- 2012-02-29
Frequently asked questions
- What is Arthur Siu's NPI number?
- Arthur Siu's National Provider Identifier (NPI) is 1942228929, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Arthur Siu's specialty?
- Arthur Siu is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Arthur Siu located?
- Arthur Siu's practice location on file with NPPES is 290 Grand Ave, Oakland, CA 94610-4791.
- What is Arthur Siu's phone number?
- The practice phone number listed in the NPPES registry for Arthur Siu is (510) 451-9157.
- Does Arthur Siu accept Medicare?
- Arthur Siu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Arthur Siu's NPI active?
- Yes — Arthur Siu's NPI (1942228929) is active in the NPPES registry as of the last update on 2012-02-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.