Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Gregory Wayne Knapton, PT ATC

Physical Therapist in Westbrook, ME · enumerated 2006 · practices at Riverview Physical Therapy Limited Partnership.

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

National Provider Identifier

1538129986

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Registry record

Entity type Individual (Type 1)

Name Mr. Gregory Wayne Knapton

Credential PT ATC

Sex Male

Practice address 23 Bridgton Rd, Suite 2, Westbrook, ME, 04092

Phone (207) 797-3477

Fax (207) 797-8577

Enumeration date Mar 27, 2006

Last updated in NPPES Sep 20, 2007

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License PT2005 (ME) Primary

2255A2300X Athletic Trainer Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License AT245 (ME) Secondary

Other identifiers

Identifier	Type	State	Issuer
626281	Other	ME	HARVARD PILGRIM
041387	Other	ME	ANTHEM
2756063	Other	ME	CIGNA

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

What specialty is Gregory Knapton?

Gregory Knapton 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.

Other providers at this practice address

Browse all →

Peter Clark Athletic Trainer · Westbrook, ME NPI 1891789087 Kristen Marden Physical Therapist · Westbrook, ME NPI 1811960826 Michael Viricel Physical Therapist · Westbrook, ME NPI 1225007503 Nathaniel Runge Physical Therapist · Westbrook, ME NPI 1073540860 Heidi Batchelder Ergonomics Physical Therapist · Westbrook, ME NPI 1255356226 Tracey Carrier Athletic Trainer · Westbrook, ME NPI 1588770986 Riverview Physical Therapy Limited Partnership Physical Therapy Clinic/Center · Westbrook, ME NPI 1881784429 Shawn Macdonald Hearing Instrument Specialist · Westbrook, ME NPI 1134466824

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-09-20.