Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Jerry D Delrosario Sr., R.R.T

Pulmonary Function Technologist in Willowbrook, IL · enumerated 2007.

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

National Provider Identifier

1942429535

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Registry record

Entity type Individual (Type 1)

Name Mr. Jerry D Delrosario Sr.

Credential R.R.T

Sex Male

Practice address 306 79th St, Willowbrook, IL, 60527

Phone (630) 325-2931

Fax (630) 455-1307

Enumeration date Apr 24, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

225B00000X Pulmonary Function Technologist Respiratory, Developmental, Rehabilitative and Restorative Service Providers Primary

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 1942429535 active?

Yes, as of the latest NPPES snapshot, NPI 1942429535 is active (record last updated 2007-07-08).

How do I verify Jerry Delrosario's NPI record?

Cross-check NPI 1942429535 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 2007-07-08.