Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Diane Marchut
Pharmacist in Oswego, IL · enumerated 2013.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1033540752
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Registry record
Entity type Individual (Type 1)
Name Diane Marchut
Sex Female
Practice address 2300 Route 34, Oswego, IL, 60543
Phone (630) 554-5616
Fax (630) 554-5745
Enumeration date Dec 5, 2013
Last updated in NPPES Apr 18, 2019
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 Diane Marchut?
Diane Marchut 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 →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-04-18.