Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Associates in Gastroenterology Sc

Gastroenterology Physician in Appleton, WI · enumerated 2006 · authorized official Nadeem Siddiqui, President.

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

National Provider Identifier

1174538854

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Registry record

Entity type Organization (Type 2)

Legal business name Associates in Gastroenterology Sc

Practice address 2700 E Enterprise Ave, Unit C, Appleton, WI, 54913

Phone (920) 738-7300

Fax (920) 738-7301

Enumeration date Jul 30, 2006

Last updated in NPPES Jul 29, 2009

Taxonomy & classification

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Nadeem Siddiqui

Title President

Phone (920) 738-7300

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 Associates in Gastroenterology Sc located?

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2009-07-29. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-07-29.