NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Irwin Douglas Obispo

Pharmacist in Evergreen Park, IL · enumerated 2019.

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

National Provider Identifier

1083262877

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Registry record

Entity type Individual (Type 1)
Name Dr. Irwin Douglas Obispo
Sex Male
Practice address Evergreen Park, IL, 60805
Phone (708) 229-0892
Fax (708) 229-0914
Enumeration date Aug 27, 2019
Last updated in NPPES Aug 27, 2019

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 051297247 (IL) Primary

Other identifiers

Identifier Type State Issuer
71-0415188 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.

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Frequently asked questions

Is NPI 1083262877 active?
Yes, as of the latest NPPES snapshot, NPI 1083262877 is active (record last updated 2019-08-27).
How do I verify Irwin Obispo's NPI record?
Cross-check NPI 1083262877 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-08-27.