NPI Portal NPI Lookup & Verification

Ivan K Weinstein, DDS

Ivan K Weinstein is a Endodontics provider (Dentist) practicing in Danbury, CT, registered in the NPPES registry with NPI 1912116773 since 2007. The credential DDS stands for Doctor of Dental Surgery.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1912116773
Entity type Individual (Type 1)
Name Ivan K Weinstein
Credential DDS
Sex Male
Practice address Danbury, CT, 06810
Phone 2037910043
Fax 2037912546
Enumeration date 2007-05-21
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
1223E0200X Endodontics Primary 5133 CT

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

Copy-ready billing details
Provider: Ivan Weinstein, DDS
NPI: 1912116773
Taxonomy: 1223E0200X (Endodontics)
Address: Danbury, CT, 06810

Verify this record

Cross-check NPI 1912116773 against the authoritative CMS record: view Ivan K Weinstein 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

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.
What specialty is Ivan Weinstein?
Ivan Weinstein is registered in NPPES with the primary taxonomy of Endodontics. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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