Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

St Margaret Mercy Healthcare Centers

Family Medicine Physician in Hammond, IN · enumerated 2006 · authorized official Thomas Gryzbek, President.

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

National Provider Identifier

1558440149

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Registry record

Entity type Organization (Type 2)

Legal business name St Margaret Mercy Healthcare Centers

Other name <Unavail>

Practice address 3831 S Hohman Ave, Hammond, IN, 46327

Phone (219) 931-1960

Fax (219) 931-1235

Enumeration date Nov 3, 2006

Last updated in NPPES Jun 23, 2010

Taxonomy & classification

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Thomas Gryzbek

Title President

Phone (219) 932-2300

Other identifiers

Identifier	Type	State	Issuer
200159110F	Medicaid	IN	-

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 2010-06-23. Verify at npiregistry.cms.hhs.gov.

Where is St Margaret Mercy Healthcare Centers located?

The practice location on file with NPPES is in Hammond, IN.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-06-23.