Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor
Dr. William E Leadingham, OD
Vision Therapy Optometrist in Ashland, KY · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1073505814
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Registry record
Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 2202261 | Other | - | UNITED HEALTHCARE |
| 0149565-001 | Other | WV | MEDICAID |
| KY00748 | Other | - | VISION BENEFITS OF AMER. |
| 181142 | Other | - | NATIONAL VISION ADMIN. |
| P00058622 | Other | - | RAILROAD MEDICARE |
| DA4299 | Other | - | RAILROAD MEDICARE (GROUP) |
| 4904360001 | Other | - | OMERC |
| 000000305764 | Other | KY | ANTHEM BLUECROSS |
| 0005282086 | Other | - | AETNA |
| 77903664 | Medicaid | KY | - |
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
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Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-12-28.