Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. David C Diiorio, D.C.

Sports Physician Chiropractor in Geneva, IL · enumerated 2005.

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

National Provider Identifier

1770582769

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Registry record

Entity type Individual (Type 1)

Name Dr. David C Diiorio

Credential D.C.

Sex Male

Practice address 423 Hamilton St, Geneva, IL, 60134

Phone (630) 232-6321

Fax (630) 232-9451

Enumeration date Jul 20, 2005

Last updated in NPPES May 12, 2026

Taxonomy & licenses

111NS0005X Sports Physician Chiropractor Chiropractic Providers · License 038007203 (IL) Primary

DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Other identifiers

Identifier	Type	State	Issuer
0004522535	Other	IL	BLUE CROSS BLUE SHIELD

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 NPI 1770582769 active?

Yes, as of the latest NPPES snapshot, NPI 1770582769 is active (record last updated 2026-05-12).

How do I verify David Diiorio's NPI record?

Cross-check NPI 1770582769 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-12.