Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alessandra Maria Alonso

Social Worker in Seattle, WA · enumerated 2018.

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

National Provider Identifier

1700375672

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Alessandra Maria Alonso

Sex Female

Practice address 1600 S Lane St, Seattle, WA, 98144

Phone (206) 682-2371

Enumeration date May 7, 2018

Last updated in NPPES May 19, 2025

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License SC61577855 (WA) Primary

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

What is the NPI number for Alessandra Alonso?

The National Provider Identifier (NPI) for Alessandra Alonso is 1700375672, a Type 1 (individual) record in the CMS NPPES registry.

Where does Alessandra Alonso practice?

The practice location on file with NPPES is in Seattle, WA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-05-19.