IndividualActive
Robert Koshiyama, D.D.S.
NPI 1821225970 · Dentist · San Francisco, CA
Robert Koshiyama, D.D.S. is a Dentist provider in San Francisco, CA (NPI 1821225970).
Provider details
- NPI number
- 1821225970
- Entity type
- Individual
- Primary specialty
- DentistDental Providers
- Credential
- D.D.S.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 30056 (CA)
Specialties & taxonomies
Dental Providers
Profile Score
Detailed profile(85/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 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
450 Sutter St Rm 2203
San Francisco, CA 94108-4207
Phone: (415) 956-6050
Fax: (415) 956-6134
Street-level locationGet directions
Mailing address
450 Sutter St Rm 2203
San Francisco, CA 94108-4207
Registry dates
- Enumerated
- 2009-06-16
- Last updated
- 2009-06-16
Frequently asked questions
- What is Robert Koshiyama's NPI number?
- Robert Koshiyama's National Provider Identifier (NPI) is 1821225970, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Koshiyama's specialty?
- Robert Koshiyama is listed in the NPPES registry with a primary specialty of Dentist (Dental Providers).
- Where is Robert Koshiyama located?
- Robert Koshiyama's practice location on file with NPPES is 450 Sutter St Rm 2203, San Francisco, CA 94108-4207.
- What is Robert Koshiyama's phone number?
- The practice phone number listed in the NPPES registry for Robert Koshiyama is (415) 956-6050.
- Is Robert Koshiyama's NPI active?
- Yes — Robert Koshiyama's NPI (1821225970) is active in the NPPES registry as of the last update on 2009-06-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.