Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. William J Brown, RN

Registered Nurse in Poplarville, MS · enumerated 2013.

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

National Provider Identifier

1427396589

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Registry record

Entity type Individual (Type 1)

Name Mr. William J Brown

Credential RN

Sex Male

Practice address 305 W Moody St, Poplarville, MS, 39470

Phone (601) 795-4543

Enumeration date Jan 24, 2013

Last updated in NPPES Jan 24, 2013

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License R892473 (MS) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN 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 1427396589 active?

Yes, as of the latest NPPES snapshot, NPI 1427396589 is active (record last updated 2013-01-24).

How do I verify William Brown's NPI record?

Cross-check NPI 1427396589 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 2013-01-24.