Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sonja Vasic, DT-CS

Q: What is the NPI number for Sonja Vasic?

The National Provider Identifier (NPI) for Sonja Vasic is 1043874597, a Type 1 (individual) record in the CMS NPPES registry.

Developmental Therapist in Chesterton, IN · enumerated 2019 · practices at Firstcare Home Care LLC.

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

National Provider Identifier

1043874597

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Registry record

Entity type Individual (Type 1)

Name Sonja Vasic

Credential DT-CS

Sex Female

Practice address 1595 S Calumet Rd, Chesterton, IN, 46304

Phone (844) 896-0235

Enumeration date Apr 30, 2019

Last updated in NPPES Apr 30, 2019

Taxonomy & licenses

222Q00000X Developmental Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers 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

Where does Sonja Vasic practice?

The practice location on file with NPPES is in Chesterton, IN. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Sonja Vasic?

The National Provider Identifier (NPI) for Sonja Vasic is 1043874597, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-04-30.