Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Catherine Johnson, D.O.

Internal Medicine Physician in Elk Grove Village, IL · enumerated 2006.

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

National Provider Identifier

1144247784

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Registry record

Entity type Individual (Type 1)

Name Dr. Catherine Johnson

Credential D.O.

Sex Female

Practice address 100 Nw Point Blvd, Elk Grove Village, IL, 60007

Phone (847) 718-3302

Fax (847) 996-9109

Enumeration date Jul 17, 2006

Last updated in NPPES Sep 29, 2023

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 083123 (IL) Primary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 20A18588 (CA) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License DR.0066672 (CO) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 04777 (KY) Secondary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
036083123	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

How do I verify Catherine Johnson's NPI record?

Cross-check NPI 1144247784 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1144247784 active?

Yes, as of the latest NPPES snapshot, NPI 1144247784 is active (record last updated 2023-09-29).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-09-29.