Gordon Block, D.D.S.
NPI 1891890513 · Endodontics · Sunnyvale, CA
Enrolled with Medicare as Order and Referring Only - Dentist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gordon Block, D.D.S. is a Endodontics provider in Sunnyvale, CA (NPI 1891890513).
Provider details
- NPI number
- 1891890513
- Entity type
- Individual
- Primary specialty
- EndodonticsDental Providers
- Credential
- D.D.S.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 24362 (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
20 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
- 2006-09-14
- Last updated
- 2007-07-08
Frequently asked questions
- What is Gordon Block's NPI number?
- Gordon Block's National Provider Identifier (NPI) is 1891890513, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gordon Block's specialty?
- Gordon Block is listed in the NPPES registry with a primary specialty of Endodontics (Dental Providers).
- Where is Gordon Block located?
- Gordon Block's practice location on file with NPPES is 1565 Hollenbeck Ave, Sunnyvale, CA 94087-5922.
- What is Gordon Block's phone number?
- The practice phone number listed in the NPPES registry for Gordon Block is (408) 739-9700.
- Does Gordon Block accept Medicare?
- Gordon Block is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gordon Block's NPI active?
- Yes — Gordon Block's NPI (1891890513) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.