Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

SOUTHERN ILLINOIS HOSPITAL SERVICES
NPI 1023933314
Clinic/Center - Sleep Disorder Diagnostic in Marion, IL

Q: What is Southern Illinois Hospital Services's NPI number?

The NPI number for Southern Illinois Hospital Services is 1023933314. It was assigned to this organization in the NPPES registry on August 13, 2026.

Q: What is Southern Illinois Hospital Services's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Sleep Disorder Diagnostic, with taxonomy code 261QS1200X.

Active since August 13, 2026

8305 EXPRESS DR, MARION, IL 62959(888) 387-5337(618) 529-0565 Get Directions Write a Review

NPPES record added: August 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Southern Illinois Hospital Services NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

SOUTHERN ILLINOIS HOSPITAL SERVICES (NPI 1023933314) is a healthcare organization registered as a sleep disorder diagnostic in Marion, Illinois and active in the NPI registry since August 2026. The organization lists Shannon S Hartke, Corporate Director Pfs, as its authorized official.

NPPES Registry Identity

NPI1023933314

Entity TypeOrganization

Primary Taxonomy261QS1200X

Legal Business NameSOUTHERN ILLINOIS HOSPITAL SERVICES

Location Address8305 EXPRESS DRMarion, IL 62959-7770

Mailing Address1239 E Main StCarbondale, IL 62901-3175 · (618) 457-5200 · Fax (618) 529-0565

Phone(888) 387-5337

Fax(618) 529-0565

Organization SubpartYesParent: St Joseph Memorial Hospital

Authorized OfficialShannon S HartkeCorporate Director Pfs · (618) 457-5200

Enumeration DateAugust 13, 2026

NPPES CertifiedAugust 13, 2026

✔ NPI 1023933314 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinic/Center · Sleep Disorder DiagnosticAmbulatory Health Care Facilities

Taxonomy Code261QS1200X

8305 EXPRESS DR, Marion, IL 62959

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Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Southern Illinois Hospital Services's NPI number?

The NPI number for Southern Illinois Hospital Services is 1023933314. It was assigned to this organization in the NPPES registry on August 13, 2026.

Where is Southern Illinois Hospital Services located?

Southern Illinois Hospital Services is located at 8305 Express Dr, Marion, IL 62959. The listed phone number is (888) 387-5337.

What is Southern Illinois Hospital Services's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Sleep Disorder Diagnostic, with taxonomy code 261QS1200X.

When was this NPI record last updated?

The NPPES record for Southern Illinois Hospital Services was last updated on August 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.