Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Daniel J Oreilly, M.D.

Gastroenterology Physician in Palos Heights, IL · enumerated 2006.

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

National Provider Identifier

1457325987

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Daniel J Oreilly

Credential M.D.

Sex Male

Practice address 12150 S Harlem Ave, Palos Heights, IL, 60463

Phone (708) 361-4778

Fax (708) 361-4799

Enumeration date Feb 13, 2006

Last updated in NPPES Mar 1, 2010

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 036057164 (IL) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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 Daniel Oreilly practice?

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

What is the NPI number for Daniel Oreilly?

The National Provider Identifier (NPI) for Daniel Oreilly is 1457325987, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-03-01.