William Winston, BC-HIS
NPI 1932178779 · Hearing Instrument Specialist · San Luis Obispo, CA
William Winston, BC-HIS is a Hearing Instrument Specialist provider in San Luis Obispo, CA (NPI 1932178779).
Provider details
- NPI number
- 1932178779
- Entity type
- Individual
- Primary specialty
- Hearing Instrument SpecialistSpeech, Language and Hearing Service Providers
- Credential
- BC-HIS
- Sex
- Male
- Sole proprietor
- Yes
- License
- HA3571 (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
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
- 2006-03-15
- Last updated
- 2007-07-09
Frequently asked questions
- What is William Winston's NPI number?
- William Winston's National Provider Identifier (NPI) is 1932178779, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Winston's specialty?
- William Winston is listed in the NPPES registry with a primary specialty of Hearing Instrument Specialist (Speech, Language and Hearing Service Providers).
- Where is William Winston located?
- William Winston's practice location on file with NPPES is 1240 Marsh St, San Luis Obispo, CA 93401-3326.
- What is William Winston's phone number?
- The practice phone number listed in the NPPES registry for William Winston is (805) 547-0955.
- Is William Winston's NPI active?
- Yes — William Winston's NPI (1932178779) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.