Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Alessandra Na Grasso, MA

Mental Health Counselor in West Newton, MA · enumerated 2020.

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

National Provider Identifier

1558970921

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Registry record

Entity type Individual (Type 1)

Name Mrs. Alessandra Na Grasso

Credential MA

Sex Female

Practice address 351 Otis St, West Newton, MA, 02465

Phone (857) 274-6680

Enumeration date Jul 30, 2020

Last updated in NPPES Jul 30, 2020

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers 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

Where does Alessandra Grasso practice?

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

What is the NPI number for Alessandra Grasso?

The National Provider Identifier (NPI) for Alessandra Grasso is 1558970921, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-07-30.