Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michaela T. Riordan

Physician Assistant in Newark, DE · enumerated 2017.

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

National Provider Identifier

1003335084

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Registry record

Entity type Individual (Type 1)

Name Michaela T. Riordan

Sex Female

Practice address 4755 Ogletown Stanton Rd Fl 3, Newark, DE, 19718

Phone (302) 733-3475

Fax (302) 325-3496

Enumeration date Sep 12, 2017

Last updated in NPPES Sep 12, 2017

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PENDING (DE) Primary

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

What is the NPI number for Michaela Riordan?

The National Provider Identifier (NPI) for Michaela Riordan is 1003335084, a Type 1 (individual) record in the CMS NPPES registry.

Where does Michaela Riordan practice?

The practice location on file with NPPES is in Newark, DE. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-09-12.