Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Daniel Francis O'Reilly, M.D.
Neurology Physician in Elmhurst, IL · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1629184833
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Registry record
Entity type Individual (Type 1)
Name Daniel Francis O'Reilly
Credential M.D.
Sex Male
Practice address 1200 S York St Ste 3160, Elmhurst, IL, 60126
Phone (331) 221-9090
Fax (331) 221-3996
Enumeration date Aug 21, 2006
Last updated in NPPES Jul 12, 2015
Taxonomy & licenses
2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 036-058474 (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 |
|---|---|---|---|
| 036058474 | 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.
Frequently asked questions
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.
What specialty is Daniel O'Reilly?
Daniel O'Reilly is registered in NPPES with the primary taxonomy of Neurology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Lawrence Frank Physical Medicine & Rehabilitation Physician · Elmhurst, IL NPI 1861468811 Henry Legaspi Physical Medicine & Rehabilitation Physician · Elmhurst, IL NPI 1023459088 Sana Syed Neurology Physician · Elmhurst, IL NPI 1023496882 Joseph Graham Physical Medicine & Rehabilitation Physician · Elmhurst, IL NPI 1578095295 Ana Wells Nurse Practitioner · Elmhurst, IL NPI 1215741749
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-07-12.