Marissa Fielstein Lmsw
About this NPIWhat this record shows.
NPI 1619383668 is registered to Marissa Fielstein Lmsw, a Social Worker practising at 79 Middleville Rd in Northport, New York. Social Worker is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Marissa Fielstein Lmsw has been enumerated in the National Provider Identifier (NPI) registry since 2014.
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Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans Marissa Fielstein Lmsw accepts. To confirm in-network status with your specific health plan, contact Marissa Fielstein Lmsw directly at (631) 261-4400.
Frequently asked
Yes. NPI 1619383668 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Social Worker 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 (631) 261-4400.
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. Marissa Fielstein Lmsw is a Type-1 individual NPI.