Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Thomas H Tsai, O.D.

Optometrist in Fredericksburg, VA · enumerated 2005.

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

National Provider Identifier

1518954619

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Registry record

Entity type Individual (Type 1)

Name Dr. Thomas H Tsai

Credential O.D.

Sex Male

Practice address 10001 Southpoint Pkwy, Fredericksburg, VA, 22407

Phone (540) 834-2020

Fax (540) 834-2444

Enumeration date Oct 4, 2005

Last updated in NPPES Apr 17, 2020

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 0618001457 (VA) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier	Type	State	Issuer
1518954619	Medicaid	VA	-

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 NPI 1518954619 active?

Yes, as of the latest NPPES snapshot, NPI 1518954619 is active (record last updated 2020-04-17).

How do I verify Thomas Tsai's NPI record?

Cross-check NPI 1518954619 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-04-17.