Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Infectious Disease Specialists PC

Infectious Disease Physician in Merrillville, IN · enumerated 2005 · authorized official Thomas Sleweon, MD/President.

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

National Provider Identifier

1245217215

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Registry record

Entity type Organization (Type 2)

Legal business name Infectious Disease Specialists PC

Practice address 200 E 86th Pl, Merrillville, IN, 46410

Phone (219) 972-1547

Fax (219) 972-1651

Enumeration date Dec 29, 2005

Last updated in NPPES Jul 31, 2025

Taxonomy & classification

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Thomas Sleweon

Title MD/President

Phone (219) 972-1547

Other identifiers

Identifier	Type	State	Issuer
200307990	Medicaid	IN	-
300069075	Medicaid	IN	-

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2025-07-31. Verify at npiregistry.cms.hhs.gov.

Where is Infectious Disease Specialists PC located?

The practice location on file with NPPES is in Merrillville, IN.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-31.