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

Norman E Liddell, MD, PHD

Specialist in Sevierville, TN · enumerated 2005 · practices at Transmedicus Service Corporation.

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

National Provider Identifier

1578547758

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Registry record

Entity type Individual (Type 1)

Name Norman E Liddell

Credential MD, PHD

Sex Male

Practice address Sevierville, TN, 37862

Phone (865) 428-4042

Fax (865) 428-8191

Enumeration date Dec 1, 2005

Last updated in NPPES Jul 6, 2010

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

Taxonomy & licenses

174400000X Specialist Other Service Providers · License MD28522 (TN) 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
702002822	Other	TN	CARITEN
4024131	Other	TN	BCBS
10012098	Other	TN	PHP TENNCARE
8710353	Other	TN	CIGNA
4472010	Other	TN	AETNA
1578547758	Other	TN	HUMANA
38043801	Medicaid	TN	-
3940202	Other	TN	UNITED HEALTHCARE

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

What specialty is Norman Liddell?

Norman Liddell is registered in NPPES with the primary taxonomy of Specialist. 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.

Other providers at this practice address

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Transmedicus Service Corporation Cardiovascular Disease Physician · Sevierville, TN NPI 1780777334

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-07-06.