NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mrs. Theresa Lynn Petruska, MSW, LSW

In Home Supportive Care Agency in Gary, IN · enumerated 2015.

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

National Provider Identifier

1922476605

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mrs. Theresa Lynn Petruska
Credential MSW, LSW
Sex Female
Practice address Gary, IN, 46409
Phone (219) 980-6217
Fax (219) 985-6772
Enumeration date Sep 11, 2015
Last updated in NPPES Sep 11, 2015

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

253Z00000X In Home Supportive Care Agency Agencies · License 33007071A (IN) Primary

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

Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Theresa Petruska?
Theresa Petruska is registered in NPPES with the primary taxonomy of In Home Supportive Care Agency. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-09-11.