Diagnostic Services Associates, Ltd.

Diagnostic Services Associates, Ltd. is a healthcare organization registered as Mental Health Counselor in Mokena, IL, holding Type 2 (organization) NPI 1336260272 since 2007. The authorized official on file is Charlene Crotty, President.

✓ Active NPI ✓ Valid NPI checksum

NPI	1336260272
Entity type	Organization (Type 2)
Legal business name	Diagnostic Services Associates, Ltd.
Practice address	18861 90TH AVENUE, SUITE C, Mokena, IL, 60448
Phone	7084223680
Enumeration date	2007-04-02
Last updated in NPPES	2016-03-03

Authorized official

Name	Charlene Crotty
Title	President
Phone	7084223680

Taxonomy & classification

Taxonomy code	Specialty	Primary	License	State
101YM0800X	Mental Health Counselor	Primary	180002382	IL

Copy-ready billing details

Provider: Diagnostic Services Associates, Ltd.
NPI: 1336260272
Taxonomy: 101YM0800X (Mental Health Counselor)
Address: 18861 90TH AVENUE, SUITE C, Mokena, IL, 60448

Verify this record

Cross-check NPI 1336260272 against the authoritative CMS record: view Diagnostic Services Associates, Ltd. on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

Where is Diagnostic Services Associates, Ltd. located?

The practice location on file with NPPES is in Mokena, IL.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2016-03-03. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2016-03-03.