Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Ent Associates Sc

Otolaryngology/Facial Plastic Surgery Physician in Milwaukee, WI · enumerated 2007 · authorized official Gretchen Durkin, President.

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

National Provider Identifier

1881819092

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Registry record

Entity type Organization (Type 2)

Legal business name Ent Associates Sc

Practice address 2315 N Lake Dr Ste 1005, Milwaukee, WI, 53211

Phone (414) 271-4141

Fax (414) 271-4343

Enumeration date Apr 14, 2007

Last updated in NPPES Sep 11, 2025

Taxonomy & classification

207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License 24504 (WI) Secondary

207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License 34875 (WI) Secondary

207YX0905X Otolaryngology/Facial Plastic Surgery Physician Allopathic & Osteopathic Physicians · License 40673 (WI) Primary

Authorized official

Name Gretchen Durkin

Title President

Phone (414) 271-4141

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

Where is Ent Associates Sc located?

The practice location on file with NPPES is in Milwaukee, WI.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2025-09-11. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.