Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Donna Jean Defronzo, DPM

Podiatrist in Des Plaines, IL · enumerated 2005.

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

National Provider Identifier

1164420774

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Registry record

Entity type Individual (Type 1)

Name Dr. Donna Jean Defronzo

Credential DPM

Sex Female

Practice address 1455 E Golf Rd, Suite 110, Des Plaines, IL, 60016

Phone (847) 390-7666

Fax (847) 390-9345

Enumeration date Jul 8, 2005

Last updated in NPPES Oct 30, 2009

Taxonomy & licenses

213E00000X Podiatrist Podiatric Medicine & Surgery Service Providers · License 016-004719 (IL) Primary

DPM · Doctor of Podiatric Medicine: A physician specializing in medical and surgical care of the foot and ankle. About the DPM credential

Other identifiers

Identifier	Type	State	Issuer
016004719	Medicaid	IL	-
60000380	Other	IL	BCBS

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 Donna Defronzo?

The National Provider Identifier (NPI) for Donna Defronzo is 1164420774, a Type 1 (individual) record in the CMS NPPES registry.

Where does Donna Defronzo practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-10-30.