Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John L. Reilly, M.D.

Orthopaedic Surgery Physician in Naperville, IL · enumerated 2005 · practices at Dupage Medical Group Ltd.

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

National Provider Identifier

1396731014

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Registry record

Entity type Individual (Type 1)

Name John L. Reilly

Credential M.D.

Sex Male

Practice address 1259 Rickert Dr, Suite 101, Naperville, IL, 60540

Phone (630) 355-1300

Fax (630) 355-3273

Enumeration date Sep 27, 2005

Last updated in NPPES Aug 18, 2023

Taxonomy & licenses

207XS0114X Adult Reconstructive Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 036070447 (IL) Secondary

207XX0005X Sports Medicine (Orthopaedic Surgery) Physician Allopathic & Osteopathic Physicians · License 036070447 (IL) Secondary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 036070447 (IL) Primary

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

Other identifiers

Identifier	Type	State	Issuer
036070447	Medicaid	IL	-
200013545	Other	IL	RAILROAD MEDICARE

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

What specialty is John Reilly?

John Reilly is registered in NPPES with the primary taxonomy of Orthopaedic Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-18.