David Trefry
NPI 1730315557 · Hearing Instrument Specialist · Oceanside, CA
David Trefry is a Hearing Instrument Specialist provider in Oceanside, CA (NPI 1730315557).
Provider details
- NPI number
- 1730315557
- Entity type
- Individual
- Primary specialty
- Hearing Instrument SpecialistSpeech, Language and Hearing Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- HA7522 (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
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
Mailing address
Registry dates
- Enumerated
- 2009-06-08
- Last updated
- 2017-04-04
Frequently asked questions
- What is David Trefry's NPI number?
- David Trefry's National Provider Identifier (NPI) is 1730315557, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Trefry's specialty?
- David Trefry is listed in the NPPES registry with a primary specialty of Hearing Instrument Specialist (Speech, Language and Hearing Service Providers).
- Where is David Trefry located?
- David Trefry's practice location on file with NPPES is 4171 Oceanside Blvd, Oceanside, CA 92056-6023.
- What is David Trefry's phone number?
- The practice phone number listed in the NPPES registry for David Trefry is (760) 940-5237.
- Is David Trefry's NPI active?
- Yes — David Trefry's NPI (1730315557) is active in the NPPES registry as of the last update on 2017-04-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.