Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum
Stromsdorfer-Tolod Medical Lab Ltd.
Clinical Medical Laboratory in Alton, IL · enumerated 2005 · authorized official Paul Stromsdorfer, M.D..
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1659354645
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Registry record
Taxonomy & classification
Authorized official
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 036039355 | Medicaid | IL | - |
| 166253 | Other | IL | HEALTHLINK |
| 4503813 | Other | IL | AETNA |
| 50000460 | Other | IL | BCBS |
| CI7774 | Other | - | TRAVELERS |
| 43489 | Other | IL | GHP |
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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Providers at this address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-09-29.