Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alex Lin

Physical Therapist in Waltham, MA · enumerated 2021.

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

National Provider Identifier

1750956488

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Registry record

Entity type Individual (Type 1)

Name Alex Lin

Sex Male

Practice address 303 Wyman St Ste 300, Waltham, MA, 02451

Phone (877) 407-3422

Fax (877) 407-4329

Enumeration date May 25, 2021

Last updated in NPPES Jul 24, 2025

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 25370 (MA) 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 specialty is Alex Lin?

Alex Lin is registered in NPPES with the primary taxonomy of Physical Therapist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-24.