Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
William Kretchman
Dental Hygienist in Harrisburg, PA · enumerated 2023.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1619746542
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Registry record
Entity type Individual (Type 1)
Name William Kretchman
Sex Male
Practice address 110 South 17th Street, Harrisburg, PA, 17104
Phone (717) 232-9971
Enumeration date Dec 20, 2023
Last updated in NPPES Dec 20, 2023
Taxonomy & licenses
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 Kretchman?
William Kretchman is registered in NPPES with the primary taxonomy of Dental Hygienist. 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.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-12-20.