Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Thomas R. Mullen, Dmd, PA

Pediatric Dentistry in Seaford, DE · enumerated 2007 · authorized official Thomas Mullen, Owner.

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

National Provider Identifier

1144355173

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Registry record

Entity type Organization (Type 2)

Legal business name Thomas R. Mullen, Dmd, PA

Practice address 8466 Herring Run Rd, Suite D, Seaford, DE, 19973

Phone (302) 629-3588

Fax (302) 629-0274

Enumeration date Feb 22, 2007

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

1223P0221X Pediatric Dentistry Dental Providers · License G1000885 (DE) Primary

Authorized official

Name Thomas Mullen

Title Owner

Phone (302) 629-3588

Other identifiers

Identifier	Type	State	Issuer
0000081302	Medicaid	DE	-

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 current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2020-08-22. Verify at npiregistry.cms.hhs.gov.

Where is Thomas R. Mullen, Dmd, PA located?

The practice location on file with NPPES is in Seaford, DE.

Providers at this address

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Mid-Atlantic Center for Oral & Maxillofacial Surgery LLC Oral and Maxillofacial Surgery (Dentist) · Seaford, DE NPI 1184166803

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.