Robert Der, M.SC.
NPI 1184781403 · Audiologist-Hearing Aid Fitter · Vallejo, CA
Robert Der, M.SC. is a Audiologist-Hearing Aid Fitter provider in Vallejo, CA (NPI 1184781403).
Provider details
- NPI number
- 1184781403
- Entity type
- Individual
- Primary specialty
- Audiologist-Hearing Aid FitterSpeech, Language and Hearing Service Providers
- Credential
- M.SC.
- Sex
- Male
- Sole proprietor
- No
- License
- AU1992 (CA)
Specialties & taxonomies
Speech, Language and Hearing Service 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
- 2007-01-03
- Last updated
- 2021-12-30
Frequently asked questions
- What is Robert Der's NPI number?
- Robert Der's National Provider Identifier (NPI) is 1184781403, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Der's specialty?
- Robert Der is listed in the NPPES registry with a primary specialty of Audiologist-Hearing Aid Fitter (Speech, Language and Hearing Service Providers).
- Where is Robert Der located?
- Robert Der's practice location on file with NPPES is 1761 Broadway St, Vallejo, CA 94589-2226.
- What is Robert Der's phone number?
- The practice phone number listed in the NPPES registry for Robert Der is (707) 645-2500.
- Is Robert Der's NPI active?
- Yes — Robert Der's NPI (1184781403) is active in the NPPES registry as of the last update on 2021-12-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.