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

Dr. John William Eiser, DO

Vascular & Interventional Radiology Physician in Metairie, LA · enumerated 2010.

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

National Provider Identifier

1922313865

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Registry record

Entity type Individual (Type 1)

Name Dr. John William Eiser

Credential DO

Sex Male

Practice address Metairie, LA, 70005

Phone (800) 436-7936

Enumeration date Aug 16, 2010

Last updated in NPPES Aug 21, 2025

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

Taxonomy & licenses

2085R0204X Vascular & Interventional Radiology Physician Allopathic & Osteopathic Physicians · License 306918 (LA) 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 1922313865 active?

Yes, as of the latest NPPES snapshot, NPI 1922313865 is active (record last updated 2025-08-21).

How do I verify John Eiser's NPI record?

Cross-check NPI 1922313865 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 2025-08-21.