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

Elena C Mejia, FNP, LAC

Family Nurse Practitioner in Walla Walla, WA · enumerated 2007.

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

National Provider Identifier

1891840310

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Registry record

Entity type Individual (Type 1)

Name Elena C Mejia

Credential FNP, LAC

Sex Female

Practice address Walla Walla, WA, 99362

Phone (509) 526-6944

Enumeration date Jan 24, 2007

Last updated in NPPES Nov 15, 2021

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

Taxonomy & licenses

171100000X Acupuncturist Other Service Providers · License 156530 (OR) Secondary

171100000X Acupuncturist Other Service Providers · License AC60404698 (WA) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AP60403410 (WA) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 093006358N1 (OR) Primary

FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP 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

How do I verify Elena Mejia's NPI record?

Cross-check NPI 1891840310 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1891840310 active?

Yes, as of the latest NPPES snapshot, NPI 1891840310 is active (record last updated 2021-11-15).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-11-15.