NPI Portal NPI Lookup & Verification

Michelle Greszes, DDS

Michelle Greszes is a Dentist provider (Dentist) practicing in Freeport, NY, registered in the NPPES registry with NPI 1215152566 since 2007. The credential DDS stands for Doctor of Dental Surgery. Practices at Nassau Family Dental, Pllc (listed at the same practice address in NPPES).

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1215152566
Entity type Individual (Type 1)
Name Michelle Greszes
Credential DDS
Sex Female
Practice address Freeport, NY, 11520
Phone 5163795500
Enumeration date 2007-04-13
Last updated in NPPES 2007-07-08

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code Specialty Primary License State
122300000X Dentist Primary 048811-1 NY

DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

Other identifiers

Identifier Type State Issuer
02173348 Medicaid NY
Copy-ready billing details
Provider: Michelle Greszes, DDS
NPI: 1215152566
Taxonomy: 122300000X (Dentist)
Address: Freeport, NY, 11520

Other providers at this practice address

NPI Name Type Specialty Location
1346383841 Rachel Martz Klein Individual General Practice Dentistry Freeport, NY
1447385265 Merav Fruchter Individual Pediatric Dentistry Freeport, NY
1144491135 Nassau Family Dental, Pllc Organization Dentist Freeport, NY

Verify this record

Cross-check NPI 1215152566 against the authoritative CMS record: view Michelle Greszes on the official NPPES registry .

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. Read the full guide or validate an NPI number.

Frequently asked questions

What specialty is Michelle Greszes?
Michelle Greszes is registered in NPPES with the primary taxonomy of Dentist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.