Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Maria G Alonso, RN

Case Management Registered Nurse in Klamath Falls, OR · enumerated 2012.

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

National Provider Identifier

1578835856

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Registry record

Entity type Individual (Type 1)

Name Maria G Alonso

Credential RN

Sex Female

Practice address 2074 S 6th St, Klamath Falls, OR, 97601

Phone (541) 851-8110

Fax (541) 851-8114

Enumeration date Feb 2, 2012

Last updated in NPPES Feb 2, 2012

Taxonomy & licenses

163WC0400X Case Management Registered Nurse Nursing Service Providers · License 099000622RN (OR) 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

How do I verify Maria Alonso's NPI record?

Cross-check NPI 1578835856 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1578835856 active?

Yes, as of the latest NPPES snapshot, NPI 1578835856 is active (record last updated 2012-02-02).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-02-02.