NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Melissa Jensen Siavelis, M.S.

Audiologist in Glen Ellyn, IL · enumerated 2008.

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

National Provider Identifier

1134383342

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Melissa Jensen Siavelis
Credential M.S.
Sex Female
Practice address 487 Pennsylvania Ave, Glen Ellyn, IL, 60137
Phone (630) 858-3277
Fax (630) 858-6932
Enumeration date Jul 16, 2008
Last updated in NPPES Feb 8, 2019

Taxonomy & licenses

231H00000X Audiologist Speech, Language and Hearing Service Providers · License 147001071 (IL) 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

What is the NPI number for Melissa Siavelis?
The National Provider Identifier (NPI) for Melissa Siavelis is 1134383342, a Type 1 (individual) record in the CMS NPPES registry.
Where does Melissa Siavelis practice?
The practice location on file with NPPES is in Glen Ellyn, IL. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-02-08.