Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alexi Kristine Mason, DO

General Practice Physician in Jacksonville, FL · enumerated 2020.

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

National Provider Identifier

1225657679

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Registry record

Entity type Individual (Type 1)

Name Dr. Alexi Kristine Mason

Credential DO

Sex Female

Practice address 2080 Child St Dept 5000, Jacksonville, FL, 32214

Phone (904) 523-7300

Enumeration date Apr 15, 2020

Last updated in NPPES Jun 24, 2025

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License 0102206760 (VA) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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 1225657679 active?

Yes, as of the latest NPPES snapshot, NPI 1225657679 is active (record last updated 2025-06-24).

How do I verify Alexi Mason's NPI record?

Cross-check NPI 1225657679 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 2025-06-24.