Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Allegiance Research Specialists, LLC

Research Study Specialist in Milwaukee, WI · enumerated 2012 · authorized official Guido Visconti, Managing Partner.

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

National Provider Identifier

1629314703

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Registry record

Entity type Organization (Type 2)

Legal business name Allegiance Research Specialists, LLC

Practice address 2645 N Mayfair Rd, Suite 200, Milwaukee, WI, 53226

Phone (414) 727-8131

Fax (414) 479-1800

Enumeration date Dec 18, 2012

Last updated in NPPES Dec 18, 2012

Taxonomy & classification

1744R1102X Research Study Specialist Other Service Providers Primary

Authorized official

Name Guido Visconti

Title Managing Partner

Phone (414) 727-8131

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 type of organization is Allegiance Research Specialists, LLC?

Allegiance Research Specialists, LLC is registered in NPPES as a Research Study Specialist (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-12-18.