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

Mr. John Arthur Swanson, MD

Obstetrics & Gynecology Physician in Clovis, CA · enumerated 2006.

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

National Provider Identifier

1255433025

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Registry record

Entity type Individual (Type 1)

Name Mr. John Arthur Swanson

Credential MD

Sex Male

Practice address Clovis, CA, 93611

Phone (559) 285-9344

Fax (559) 897-8792

Enumeration date Sep 2, 2006

Last updated in NPPES May 6, 2024

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

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License C341450 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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 1255433025 active?

Yes, as of the latest NPPES snapshot, NPI 1255433025 is active (record last updated 2024-05-06).

How do I verify John Swanson's NPI record?

Cross-check NPI 1255433025 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 2024-05-06.