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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Darcy A Stack, MS, OTRL

Occupational Therapist in Chicago, IL · enumerated 2007 · practices at Accelerated Rehabilitation Centers Ltd.

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

National Provider Identifier

1679774525

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Registry record

Entity type Individual (Type 1)
Name Ms. Darcy A Stack
Credential MS, OTRL
Sex Female
Practice address 221 N Lasalle St, Chicago, IL, 60601
Phone (312) 855-9206
Fax (312) 855-9210
Enumeration date May 29, 2007
Last updated in NPPES Jul 13, 2011

Taxonomy & licenses

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 056.006455 (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

Where does Darcy Stack practice?
The practice location on file with NPPES is in Chicago, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Darcy Stack?
The National Provider Identifier (NPI) for Darcy Stack is 1679774525, 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 2011-07-13.