Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Peter Swenson

Behavior Analyst in Nantucket, MA · enumerated 2013.

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

National Provider Identifier

1689005365

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Registry record

Entity type Individual (Type 1)

Name Peter Swenson

Sex Male

Practice address 20 Vesper Ln, Nantucket, MA, 02554

Phone (508) 228-2689

Enumeration date Dec 6, 2013

Last updated in NPPES Dec 6, 2013

Taxonomy & licenses

103K00000X Behavior Analyst 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.

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Frequently asked questions

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.

What specialty is Peter Swenson?

Peter Swenson is registered in NPPES with the primary taxonomy of Behavior Analyst. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-12-06.