Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Allergic Diseases Sc

Allergy & Immunology Physician in West Allis, WI · enumerated 2006 · authorized official Steven Cohen, President.

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

National Provider Identifier

1609898287

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Registry record

Entity type Organization (Type 2)

Legal business name Allergic Diseases Sc

Practice address 11121 West Oklahoma Avenue, West Allis, WI, 53227

Phone (414) 545-1111

Fax (414) 545-1144

Enumeration date Jul 24, 2006

Last updated in NPPES Jun 24, 2010

Taxonomy & classification

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Steven Cohen

Title President

Phone (414) 545-1111

Other identifiers

Identifier	Type	State	Issuer
32694400	Medicaid	WI	-

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 2010-06-24. Verify at npiregistry.cms.hhs.gov.

Where is Allergic Diseases Sc located?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-06-24.