NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Harriet D Halstein, O.D.

Optometrist in Bay Shore, NY · enumerated 2007.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1033327432

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Harriet D Halstein
Credential O.D.
Sex Female
Practice address 1701 Sunrise Hwy, Bay Shore, NY, 11706
Phone (631) 665-4700
Enumeration date May 18, 2007
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 5243-1 (NY) Primary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

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 → Validate an NPI →

Frequently asked questions

What is the NPI number for Harriet Halstein?
The National Provider Identifier (NPI) for Harriet Halstein is 1033327432, a Type 1 (individual) record in the CMS NPPES registry.
Where does Harriet Halstein practice?
The practice location on file with NPPES is in Bay Shore, NY. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.