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Mrs. Caryn M. Masterson, MS, OTR/L

Occupational Therapist in Hammond, IN · enumerated 2008 · practices at 1st Aid Plus, Inc..

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

National Provider Identifier

1336398759

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Registry record

Entity type Individual (Type 1)
Name Mrs. Caryn M. Masterson
Credential MS, OTR/L
Sex Female
Practice address 7443 Indianapolis Blvd, Hammond, IN, 46324
Phone (219) 844-8100
Fax (219) 844-7460
Enumeration date Sep 10, 2008
Last updated in NPPES May 20, 2025

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 056002589 (IL) Secondary
225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers Primary

Other identifiers

Identifier Type State Issuer
056002589 Other IL DEPARTMENT OF PROFESSIONAL REGULATION REGISTERED OCCUPATIONAL THERAPIST

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

Where does Caryn Masterson practice?
The practice location on file with NPPES is in Hammond, IN. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Caryn Masterson?
The National Provider Identifier (NPI) for Caryn Masterson is 1336398759, 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 2025-05-20.