Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

George D. Tsonis, MD

Emergency Medicine Physician in Rockford, IL · enumerated 2006.

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

National Provider Identifier

1225198849

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Registry record

Entity type Individual (Type 1)

Name George D. Tsonis

Credential MD

Sex Male

Practice address 2400 N Rockton Ave, Rockford, IL, 61103

Phone (815) 971-3333

Enumeration date Dec 12, 2006

Last updated in NPPES Nov 1, 2007

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 036-100740 (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
036100740	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

Where does George Tsonis practice?

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

What is the NPI number for George Tsonis?

The National Provider Identifier (NPI) for George Tsonis is 1225198849, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-11-01.