Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Nicholas Joseph Tomasiak, D.C.

Chiropractor in Florissant, MO · enumerated 2017.

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

National Provider Identifier

1033638655

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Nicholas Joseph Tomasiak

Credential D.C.

Sex Male

Practice address 225 Dunn Rd, Florissant, MO, 63031

Phone (314) 627-1411

Enumeration date Sep 14, 2017

Last updated in NPPES Sep 5, 2023

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 2017006767 (MO) Primary

DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

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 1033638655 active?

Yes, as of the latest NPPES snapshot, NPI 1033638655 is active (record last updated 2023-09-05).

How do I verify Nicholas Tomasiak's NPI record?

Cross-check NPI 1033638655 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 2023-09-05.