Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ellen F Liuzza, MD

Internal Medicine Physician in Oak Ridge, TN · enumerated 2005.

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

National Provider Identifier

1437158920

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Registry record

Entity type Individual (Type 1)

Name Ellen F Liuzza

Credential MD

Sex Female

Practice address 100 Vermont Ave, Oak Ridge, TN, 37830

Phone (865) 482-1777

Fax (865) 482-1030

Enumeration date Jul 18, 2005

Last updated in NPPES Oct 31, 2016

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 41358 (KY) 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
50024216	Other	KY	PASSPORT
Q017377	Medicaid	TN	-
000000613609	Other	KY	ANTHEM
P00754793	Other	KY	RAILROAD MEDICARE
3718940000	Other	KY	PASSPORT ADVANTAGE
7100083480	Medicaid	KY	-

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 specialty is Ellen Liuzza?

Ellen Liuzza is registered in NPPES with the primary taxonomy of Internal Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-10-31.