Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Tanner Layne Mattison, M.D.

Anatomic Pathology & Clinical Pathology Physician in Lewisville, TX · enumerated 2006.

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

National Provider Identifier

1881657245

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Registry record

Entity type Individual (Type 1)

Name Dr. Tanner Layne Mattison

Credential M.D.

Sex Male

Practice address 2609 Sir Gawain Ln, Lewisville, TX, 75056

Phone (214) 392-5871

Enumeration date Apr 7, 2006

Last updated in NPPES Apr 3, 2024

Taxonomy & licenses

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License L2451 (TX) 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
DR.0049728	Medicaid	CO	-
MD.202224	Medicaid	LA	-
2008-02044	Medicaid	NC	-
42717	Medicaid	AZ	-
L2451	Medicaid	TX	-
MD2008-0818	Medicaid	NM	-
49732-1	Medicaid	NY	-

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

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 Tanner Mattison?

Tanner Mattison is registered in NPPES with the primary taxonomy of Anatomic Pathology & Clinical Pathology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-03.