Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. William P Cornils, DDS PC
Dentist in Hagerstown, IN · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1578608121
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Registry record
Entity type Individual (Type 1)
Name Dr. William P Cornils
Credential DDS PC
Sex Male
Practice address 449 E Main Street, Hagerstown, IN, 47346
Phone (765) 489-4440
Fax (765) 489-4440
Enumeration date Feb 21, 2007
Last updated in NPPES Jul 8, 2007
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
Is NPI 1578608121 active?
Yes, as of the latest NPPES snapshot, NPI 1578608121 is active (record last updated 2007-07-08).
How do I verify William Cornils's NPI record?
Cross-check NPI 1578608121 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.