Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael Edward Riordan, M.D

Clinical Cardiac Electrophysiology Physician in West Chester, PA · enumerated 2014.

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

National Provider Identifier

1629487343

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Registry record

Entity type Individual (Type 1)

Name Michael Edward Riordan

Credential M.D

Sex Male

Practice address 915 Old Fern Hill Rd Ste 5, West Chester, PA, 19380

Phone (610) 696-2850

Fax (610) 696-7159

Enumeration date Aug 6, 2014

Last updated in NPPES Jan 23, 2023

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License MD476936 (PA) Secondary

207RC0001X Clinical Cardiac Electrophysiology Physician Allopathic & Osteopathic Physicians · License MD476936 (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
1040203810001	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1629487343 active?

Yes, as of the latest NPPES snapshot, NPI 1629487343 is active (record last updated 2023-01-23).

How do I verify Michael Riordan's NPI record?

Cross-check NPI 1629487343 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Gavin Harper Acute Care Nurse Practitioner · West Chester, PA NPI 1457816282 Jennifer Ciccarelli Acute Care Nurse Practitioner · West Chester, PA NPI 1164086575 Chelsea Harvey Acute Care Nurse Practitioner · West Chester, PA NPI 1700422391 Laura Dennin Acute Care Nurse Practitioner · West Chester, PA NPI 1609414002 Cindy Larosa Nurse Practitioner · West Chester, PA NPI 1770245250 Tiffany Danford Adult Health Nurse Practitioner · West Chester, PA NPI 1700664323 Hayley Degaetano Registered Nurse · West Chester, PA NPI 1245018290

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-01-23.