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About this NPIWhat this record shows.
NPI 1255809398 is registered to Matthew Greenstein, a Hearing Instrument Specialist practising at 222 High St Ste 105 in Newton, New Jersey. Hearing Instrument Specialist is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Matthew Greenstein has been enumerated in the National Provider Identifier (NPI) registry since 2018.
Provider type
Individual (Type 1)
Status
Active
Enumerated
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The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans Matthew Greenstein accepts. To confirm in-network status with your specific health plan, contact Matthew Greenstein directly at (973) 862-6495.
Frequently asked
Yes. NPI 1255809398 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Hearing Instrument Specialist is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (973) 862-6495.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. Matthew Greenstein is a Type-1 individual NPI.
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