NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Matthew Anthony Giessman, DC

Chiropractor in Pleasanton, CA · enumerated 2022 · practices at Kirk Chiropractic, Inc..

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

National Provider Identifier

1255086724

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Registry record

Entity type Individual (Type 1)
Name Matthew Anthony Giessman
Credential DC
Sex Male
Practice address 148 Ray St Ste A, Pleasanton, CA, 94566
Phone (925) 484-0191
Enumeration date Feb 14, 2022
Last updated in NPPES Feb 14, 2022

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 36223 (CA) 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.

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Frequently asked questions

How do I verify Matthew Giessman's NPI record?
Cross-check NPI 1255086724 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1255086724 active?
Yes, as of the latest NPPES snapshot, NPI 1255086724 is active (record last updated 2022-02-14).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-02-14.