Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Heather Michelle Gradisek, AU.D.

Audiologist-Hearing Aid Fitter in Wilmington, DE · enumerated 2011.

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

National Provider Identifier

1811285505

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Registry record

Entity type Individual (Type 1)

Name Heather Michelle Gradisek

Credential AU.D.

Sex Female

Practice address 1941 Limestone Rd Ste 210, Wilmington, DE, 19808

Phone (302) 998-0300

Enumeration date Jul 14, 2011

Last updated in NPPES Jan 16, 2012

Taxonomy & licenses

237600000X Audiologist-Hearing Aid Fitter Speech, Language and Hearing Service Providers · License 02-0000185 (DE) Primary

AUD · Doctor of Audiology: A licensed audiologist diagnosing and treating hearing and balance disorders. About the AUD credential

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 1811285505 active?

Yes, as of the latest NPPES snapshot, NPI 1811285505 is active (record last updated 2012-01-16).

How do I verify Heather Gradisek's NPI record?

Cross-check NPI 1811285505 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Ryan Hickman Audiologist-Hearing Aid Fitter · Wilmington, DE NPI 1295216232 Max Gilbane Audiologist · Wilmington, DE NPI 1891356242

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-01-16.