Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Melissa Siddall Siddall, ST

Surgical Technologist in Normal, IL · enumerated 2012.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1598011991

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Registry record

Entity type Individual (Type 1)

Name Melissa Siddall Siddall

Credential ST

Sex Female

Practice address 1604 Visa Dr., Ste. 2, Normal, IL, 61761

Phone (309) 846-4716

Enumeration date Aug 3, 2012

Last updated in NPPES Aug 3, 2012

Taxonomy & licenses

246ZS0410X Surgical Technologist Technologists, Technicians & Other Technical Service Providers Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1598011991 active?

Yes, as of the latest NPPES snapshot, NPI 1598011991 is active (record last updated 2012-08-03).

How do I verify Melissa Siddall's NPI record?

Cross-check NPI 1598011991 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-08-03.