Thomas Diffenderfer
NPI 1790923662 · Other Technician · San Leandro, CA
Thomas Diffenderfer is a Other Technician provider in San Leandro, CA (NPI 1790923662).
Provider details
- NPI number
- 1790923662
- Entity type
- Individual
- Primary specialty
- Other TechnicianTechnologists, Technicians & Other Technical Service Providers
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Technologists, Technicians & Other Technical Service Providers
Profile Score
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
83% 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
- 2009-01-29
- Last updated
- 2009-01-29
Frequently asked questions
- What is Thomas Diffenderfer's NPI number?
- Thomas Diffenderfer's National Provider Identifier (NPI) is 1790923662, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Diffenderfer's specialty?
- Thomas Diffenderfer is listed in the NPPES registry with a primary specialty of Other Technician (Technologists, Technicians & Other Technical Service Providers).
- Where is Thomas Diffenderfer located?
- Thomas Diffenderfer's practice location on file with NPPES is 2275 Arlington Dr, San Leandro, CA 94578-1132.
- What is Thomas Diffenderfer's phone number?
- The practice phone number listed in the NPPES registry for Thomas Diffenderfer is (510) 317-1444.
- Is Thomas Diffenderfer's NPI active?
- Yes — Thomas Diffenderfer's NPI (1790923662) is active in the NPPES registry as of the last update on 2009-01-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.