Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
William Blake Cosner
Pharmacist in Madisonville, TN · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1871092866
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Registry record
Entity type Individual (Type 1)
Name William Blake Cosner
Sex Male
Practice address 4525 Highway 411, Madisonville, TN, 37354
Phone (423) 442-6362
Fax (423) 442-6539
Enumeration date Feb 6, 2018
Last updated in NPPES Feb 6, 2018
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 Cosner?
William Cosner is registered in NPPES with the primary taxonomy of Pharmacist. 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 → Wal-Mart Stores East Lp Community/Retail Pharmacy · Madisonville, TN NPI 1518984707 Tara Mullen Optometrist · Madisonville, TN NPI 1023108560 Wal-Mart Stores East, Lp Eyewear Supplier · Madisonville, TN NPI 1407938640 Tara K. Mullen, O.D., P.C. Optometrist · Madisonville, TN NPI 1922204007 Tommy Garren Pharmacist · Madisonville, TN NPI 1326548223 Terry Howe Pharmacist · Madisonville, TN NPI 1386144079 Taylor Kirkland Pharmacist · Madisonville, TN NPI 1073111241
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-02-06.