Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
William Ralph Clayton
Physical Therapist in Clayton, NC · enumerated 2016.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1952760704
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Registry record
Entity type Individual (Type 1)
Name William Ralph Clayton
Sex Male
Practice address 166 Springbrook Ave, Ste 201, Clayton, NC, 27520
Phone (919) 535-8461
Fax (919) 535-8459
Enumeration date Feb 22, 2016
Last updated in NPPES Jul 7, 2026
Taxonomy & licenses
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License P16147 (NC) 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
What specialty is William Clayton?
William Clayton 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 → Richard Alioto Orthopaedic Surgery Physician · Clayton, NC NPI 1780771220 Aaron Leininger Sports Medicine (Family Medicine) Physician · Clayton, NC NPI 1861514556 Pinnacle Health Services of North Carolina, LLC Radiology Clinic/Center · Clayton, NC NPI 1548454127 Caitlin Cook Physical Therapist · Clayton, NC NPI 1144699091 Advanced Spine and Pain Center, P.A. Pain Medicine (Physical Medicine & Rehabilitation) Physician · Clayton, NC NPI 1003275603
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-07-07.