Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
William A. Karcher IV, C.P.
Prosthetist in Grants Pass, OR · enumerated 2025.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1871465443
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Registry record
Entity type Individual (Type 1)
Name William A. Karcher IV
Credential C.P.
Sex Male
Practice address 781 Ne 7th St, Grants Pass, OR, 97526
Phone (904) 240-2802
Enumeration date Sep 22, 2025
Last updated in NPPES Sep 22, 2025
Taxonomy & licenses
224P00000X Prosthetist Respiratory, Developmental, Rehabilitative and Restorative 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.
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 William Karcher?
William Karcher is registered in NPPES with the primary taxonomy of Prosthetist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Steven Rogers General Practice Dentistry · Grants Pass, OR NPI 1487652244 Hales Dental Practice, PC Dental Clinic/Center · Grants Pass, OR NPI 1790229383 Hales Dental Practice, PC Customized Equipment (DME) · Grants Pass, OR NPI 1831637537 Karcher Prosthetics LLC Prosthetic/Orthotic Supplier · Grants Pass, OR NPI 1588540751
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-22.