Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Karen Diane Hummel, PAC

Physician Assistant in Centralia, IL · enumerated 2006 · practices at Physician Services Corporation of Southern Illinois Inc.

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

National Provider Identifier

1356392245

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Registry record

Entity type Individual (Type 1)

Name Karen Diane Hummel

Credential PAC

Sex Female

Practice address 1441 W Broadway, Centralia, IL, 62801

Phone (618) 532-9050

Enumeration date May 15, 2006

Last updated in NPPES Nov 23, 2020

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 085002330 (IL) Primary

Other identifiers

Identifier	Type	State	Issuer
P00619153	Other	IL	MEDICARE RR NUMBER
DD8320	Other	IL	GROUP MED RR NUMBER
208959	Other	IL	MEDICARE GRP NUMBER

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 → Validate an NPI →

Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Karen Hummel?

Karen Hummel is registered in NPPES with the primary taxonomy of Physician Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-11-23.