Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alyssa J Williamson, DPT, ATC, CSCS

Physical Therapist in Danvers, MA · enumerated 2016.

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

National Provider Identifier

1215481627

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Registry record

Entity type Individual (Type 1)

Name Dr. Alyssa J Williamson

Credential DPT, ATC, CSCS

Sex Female

Practice address 199 Newbury St, Danvers, MA, 01923

Phone (718) 307-2259

Enumeration date Aug 15, 2016

Last updated in NPPES Sep 13, 2024

Taxonomy & licenses

2255A2300X Athletic Trainer Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 664646 (MA) Secondary

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 22400 (MA) Primary

2251S0007X Sports Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License SP20071 (MA) Secondary

2251X0800X Orthopedic Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 22400 (MA) Secondary

DPT · Doctor of Physical Therapy: A physical therapist holding the clinical doctorate now standard for the profession. About the DPT 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

Where does Alyssa Williamson practice?

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

What is the NPI number for Alyssa Williamson?

The National Provider Identifier (NPI) for Alyssa Williamson is 1215481627, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-09-13.