Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Katherine Spangenberg, M.D.

Internal Medicine Physician in Joliet, IL · enumerated 2006.

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

National Provider Identifier

1942246954

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Registry record

Entity type Individual (Type 1)

Name Katherine Spangenberg

Credential M.D.

Sex Female

Practice address 2100 Glenwood Ave, Joliet, IL, 60435

Phone (815) 725-2121

Fax (815) 741-6303

Enumeration date Jun 20, 2006

Last updated in NPPES Jun 1, 2022

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 036102796 (IL) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
36102796	Medicaid	IL	-

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

What is the NPI number for Katherine Spangenberg?

The National Provider Identifier (NPI) for Katherine Spangenberg is 1942246954, a Type 1 (individual) record in the CMS NPPES registry.

Where does Katherine Spangenberg practice?

The practice location on file with NPPES is in Joliet, IL. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-06-01.