Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Gastroenterology Associates of Western Michigan Plc

Gastroenterology Physician in Wyoming, MI · enumerated 2006 · authorized official Allan Coates, Principle.

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

National Provider Identifier

1588731087

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)

Legal business name Gastroenterology Associates of Western Michigan Plc

Practice address 2093 Health Drive, Suite 201, Wyoming, MI, 49519

Phone (616) 452-7099

Fax (616) 452-4142

Enumeration date Nov 29, 2006

Last updated in NPPES Mar 6, 2021

Taxonomy & classification

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Allan Coates

Title Principle

Phone (616) 450-2765

Other identifiers

Identifier	Type	State	Issuer
1134509532	Medicaid	MI	-
1093116048	Medicaid	MI	-
1588731087	Medicaid	MI	-

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

Who is the authorized official for Gastroenterology Associates of Western Michigan Plc?

NPPES lists Allan Coates (Principle) as the authorized official for this organization.

What is the NPI number for Gastroenterology Associates of Western Michigan Plc?

The NPI for Gastroenterology Associates of Western Michigan Plc is 1588731087, a Type 2 (organization) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-03-06.