Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Martin O'Riordan, MD

Cardiovascular Disease Physician in Darby, PA · enumerated 2005.

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

National Provider Identifier

1528063385

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Registry record

Entity type Individual (Type 1)

Name Martin O'Riordan

Credential MD

Sex Male

Practice address 1503 Lansdowne Ave, Ste 3001, Darby, PA, 19023

Phone (610) 526-4100

Fax (610) 586-4114

Enumeration date Jun 17, 2005

Last updated in NPPES May 25, 2021

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License MD041717E (PA) 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
0011918290014	Medicaid	PA	-

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 1528063385 active?

Yes, as of the latest NPPES snapshot, NPI 1528063385 is active (record last updated 2021-05-25).

How do I verify Martin O'Riordan's NPI record?

Cross-check NPI 1528063385 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 2021-05-25.