Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Frederick J Duffy Jr., M.D.

Plastic Surgery Physician in Dallas, TX · enumerated 2005.

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

National Provider Identifier

1376546101

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Registry record

Entity type Individual (Type 1)

Name Dr. Frederick J Duffy Jr.

Credential M.D.

Sex Male

Practice address Dallas, TX, 75251

Phone (469) 501-1466

Fax (469) 501-1465

Enumeration date May 24, 2005

Last updated in NPPES Aug 12, 2025

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

208200000X Plastic Surgery Physician Allopathic & Osteopathic Physicians · License K2452 (TX) Primary

2082S0099X Plastic Surgery Within the Head and Neck (Plastic Surgery) Physician Allopathic & Osteopathic Physicians · License K2452 (TX) Secondary

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
250010502	Other	TX	MEDICARE RAILROAD - INDIVIDUAL
DG1038	Other	TX	MEDICARE RAILROAD GROUP
120616104	Medicaid	TX	-

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 this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Frederick Duffy?

Frederick Duffy is registered in NPPES with the primary taxonomy of Plastic Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-08-12.