NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

Thomas R Gruszynski MD Inc

Obstetrics & Gynecology Physician in South Bend, IN · enumerated 2007 · authorized official Thomas Gruszynski, Physician.

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

National Provider Identifier

1578756060

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Thomas R Gruszynski MD Inc
Parent organization Thomas R Gruszynski MD Inc
Practice address 621 Memorial Drive, Suite 616, South Bend, IN, 46601
Fax (574) 234-4775
Enumeration date Aug 20, 2007
Last updated in NPPES Oct 28, 2007

Taxonomy & classification

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License C1023429A (IN) Primary

Authorized official

Name Thomas Gruszynski
Title Physician

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 is the NPI number for Thomas R Gruszynski MD Inc?
The NPI for Thomas R Gruszynski MD Inc is 1578756060, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Thomas R Gruszynski MD Inc?
NPPES lists Thomas Gruszynski (Physician) as the authorized official for this organization.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-28.