Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Mary A Lee, MACCCSLPL

Speech-Language Pathologist in Chicago, IL · enumerated 2007 · practices at Oak Tree Developmental Center.

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

National Provider Identifier

1699979583

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Registry record

Entity type Individual (Type 1)

Name Ms. Mary A Lee

Credential MACCCSLPL

Sex Female

Practice address 1640 N Wells St Unit 103, Chicago, IL, 60614

Phone (773) 550-6987

Fax (773) 244-1364

Enumeration date Jun 13, 2007

Last updated in NPPES Mar 22, 2010

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License 146.005733 (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

Is NPI 1699979583 active?

Yes, as of the latest NPPES snapshot, NPI 1699979583 is active (record last updated 2010-03-22).

How do I verify Mary Lee's NPI record?

Cross-check NPI 1699979583 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-03-22.