Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum
Peak Therapeutics, Ltd
Specialist in Wilmette, IL · enumerated 2006 · authorized official James Buskirk, President.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1558390849
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Registry record
Taxonomy & classification
Authorized official
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 01634372 | Other | IL | BCBS GROUP NO. |
| 200573902 | Other | IL | TRANSIT REHABILITATION CENTERS OF CHICAGO |
| 1618443 | Other | IL | BCBS GROUP NO. |
| 236963283001 | Medicaid | IL | - |
| DC3951 | Other | IL | MEDICARE RAILROAD-PALMETTO GBA |
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 2013-02-20.