Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Landis K Griffeth, PHD MD

Nuclear Medicine Physician in Dallas, TX · enumerated 2006 · practices at American Radiology Consultants Pllc.

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

National Provider Identifier

1861446635

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Registry record

Entity type Individual (Type 1)

Name Landis K Griffeth

Credential PHD MD

Sex Male

Practice address 3500 Gaston Avenue, Dallas, TX, 75246

Phone (214) 826-8822

Fax (214) 826-9792

Enumeration date May 19, 2006

Last updated in NPPES Feb 15, 2012

Taxonomy & licenses

207U00000X Nuclear Medicine Physician Allopathic & Osteopathic Physicians · License J3486 (TX) Primary

Other identifiers

Identifier	Type	State	Issuer
139923023	Medicaid	TX	-
139923022	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 Landis Griffeth?

Landis Griffeth is registered in NPPES with the primary taxonomy of Nuclear Medicine 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 2012-02-15.