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

Mr. Thomas Mcwilliams, TS (ABB), MB (ASCP)

Technician/Technologist in Ann Arbor, MI · enumerated 2019.

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

National Provider Identifier

1043770613

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Registry record

Entity type Individual (Type 1)

Name Mr. Thomas Mcwilliams

Credential TS (ABB), MB (ASCP)

Sex Male

Practice address Ann Arbor, MI, 48105

Phone (267) 972-9252

Enumeration date Mar 20, 2019

Last updated in NPPES Mar 20, 2019

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

Taxonomy & licenses

291U00000X Clinical Medical Laboratory Laboratories Secondary

156F00000X Technician/Technologist Eye and Vision Services Providers Primary

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 1043770613 active?

Yes, as of the latest NPPES snapshot, NPI 1043770613 is active (record last updated 2019-03-20).

How do I verify Thomas Mcwilliams's NPI record?

Cross-check NPI 1043770613 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-03-20.