Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Hilary Lyons Oneill, M.D.

Psychiatry Physician in Phila, PA · enumerated 2007.

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

National Provider Identifier

1104048040

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Registry record

Entity type Individual (Type 1)

Name Dr. Hilary Lyons Oneill

Credential M.D.

Sex Female

Practice address 5501 Old York Rd, Phila, PA, 19141

Phone (215) 456-6255

Enumeration date May 2, 2007

Last updated in NPPES Jul 15, 2016

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License MD427679 (PA) 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

How do I verify Hilary Oneill's NPI record?

Cross-check NPI 1104048040 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1104048040 active?

Yes, as of the latest NPPES snapshot, NPI 1104048040 is active (record last updated 2016-07-15).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-07-15.