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Troy Gastroenterology, PC

Gastroenterology Physician in East Lansing, MI · enumerated 2006 · authorized official Mary Michalek, Billing Manager.

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

National Provider Identifier

1699880591

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Registry record

Entity type Organization (Type 2)
Legal business name Troy Gastroenterology, PC
Other name <Unavail>
Practice address 1650 Ramblewood Dr Ste 100, East Lansing, MI, 48823
Phone (517) 332-1200
Fax (517) 351-7122
Enumeration date Aug 20, 2006
Last updated in NPPES May 3, 2022

Taxonomy & classification

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians Primary
208C00000X Colon & Rectal Surgery Physician Allopathic & Osteopathic Physicians Secondary

Authorized official

Name Mary Michalek
Title Billing Manager
Phone (586) 726-8423

Other identifiers

Identifier Type State Issuer
500C311470 Other MI BCBSM
OC31060 Other MI BCBSM

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.

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Frequently asked questions

Who is the authorized official for Troy Gastroenterology, PC?
NPPES lists Mary Michalek (Billing Manager) as the authorized official for this organization.
What is the NPI number for Troy Gastroenterology, PC?
The NPI for Troy Gastroenterology, PC is 1699880591, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-05-03.