Matthew Greenstein
NPI 1255809398 · Hearing Instrument Specialist · Newton, NJ
Matthew Greenstein is a Hearing Instrument Specialist provider in Newton, NJ (NPI 1255809398).
Provider details
- NPI number
- 1255809398
- Entity type
- Individual
- Primary specialty
- Hearing Instrument SpecialistSpeech, Language and Hearing Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 25MG00149500 (NJ)
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
7 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
- 2018-11-07
- Last updated
- 2018-11-07
Frequently asked questions
- What is Matthew Greenstein's NPI number?
- Matthew Greenstein's National Provider Identifier (NPI) is 1255809398, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Greenstein's specialty?
- Matthew Greenstein is listed in the NPPES registry with a primary specialty of Hearing Instrument Specialist (Speech, Language and Hearing Service Providers).
- Where is Matthew Greenstein located?
- Matthew Greenstein's practice location on file with NPPES is 222 High St Ste 105, Newton, NJ 07860-9604.
- What is Matthew Greenstein's phone number?
- The practice phone number listed in the NPPES registry for Matthew Greenstein is (973) 862-6495.
- Is Matthew Greenstein's NPI active?
- Yes — Matthew Greenstein's NPI (1255809398) is active in the NPPES registry as of the last update on 2018-11-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.