Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Margaret Mary Underwood, DT

Developmental Therapist in Orland Park, IL · enumerated 2008.

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

National Provider Identifier

1104087816

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Registry record

Entity type Individual (Type 1)

Name Margaret Mary Underwood

Credential DT

Sex Female

Practice address 10156 Hyacinth Dr, Orland Park, IL, 60462

Phone (708) 460-8559

Enumeration date Jun 24, 2008

Last updated in NPPES Jun 24, 2008

Taxonomy & licenses

222Q00000X Developmental Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License MU53630107P (IL) 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.

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Frequently asked questions

What is the NPI number for Margaret Underwood?

The National Provider Identifier (NPI) for Margaret Underwood is 1104087816, a Type 1 (individual) record in the CMS NPPES registry.

Where does Margaret Underwood practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-24.