Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Ervin Brown Dmd & Steven J Rothenberg Dmd LLP

Dentist in Darien, CT · enumerated 2006 · authorized official Ervin Brown, Dentist Owner.

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

National Provider Identifier

1083726749

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Registry record

Entity type Organization (Type 2)

Legal business name Ervin Brown Dmd & Steven J Rothenberg Dmd LLP

Practice address 24 Old Kings Highway South, Darien, CT, 06820

Phone (203) 655-1541

Fax (203) 655-9064

Enumeration date Aug 31, 2006

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

122300000X Dentist Dental Providers · License 6020 (CT) Primary

122300000X Dentist Dental Providers · License 6264 (CT) Secondary

Authorized official

Name Ervin Brown

Title Dentist Owner

Phone (203) 655-1541

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2020-08-22. Verify at npiregistry.cms.hhs.gov.

Where is Ervin Brown Dmd & Steven J Rothenberg Dmd LLP located?

The practice location on file with NPPES is in Darien, CT.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.