Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Stephanie T Mermelstein
Specialist in West Hempstead, NY · enumerated 2017.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1427576933
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Registry record
Entity type Individual (Type 1)
Name Mrs. Stephanie T Mermelstein
Sex Female
Practice address 235 Spruce St, West Hempstead, NY, 11552
Phone (917) 803-6369
Enumeration date Sep 5, 2017
Last updated in NPPES Sep 5, 2017
Taxonomy & licenses
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Where does Stephanie Mermelstein practice?
The practice location on file with NPPES is in West Hempstead, NY. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Stephanie Mermelstein?
The National Provider Identifier (NPI) for Stephanie Mermelstein is 1427576933, a Type 1 (individual) record in the CMS NPPES registry.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-09-05.