Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Gregory Walker
Physical Therapist in Wenham, MA · enumerated 2015.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1518333657
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Registry record
Entity type Individual (Type 1)
Name Gregory Walker
Sex Male
Practice address 255 Grapevine Rd, Wenham, MA, 01984
Phone (978) 524-0000
Enumeration date Aug 12, 2015
Last updated in NPPES Aug 12, 2015
Taxonomy & licenses
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 21954 (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.
Frequently asked questions
Where does Gregory Walker practice?
The practice location on file with NPPES is in Wenham, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Gregory Walker?
The National Provider Identifier (NPI) for Gregory Walker is 1518333657, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Marie Lucey Physical Therapist · Wenham, MA NPI 1033108584 Elisabeth Whitley Physical Therapist · Wenham, MA NPI 1497744957 Marie Lucey, PC Physical Therapy Clinic/Center · Wenham, MA NPI 1588643092 Gordon College Physical Therapist · Wenham, MA NPI 1831375278 Stacy Pineda Physical Therapist · Wenham, MA NPI 1154550481 Harmeling Physical Therapy and Sports Fitness Occupational Therapist · Wenham, MA NPI 1114251758 Emily Righter Physical Therapist · Wenham, MA NPI 1053619452 Mckenzie Distefano Physical Therapist · Wenham, MA NPI 1225462559
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-08-12.