NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Lisa J. Marencin, M.S.

Audiologist-Hearing Aid Fitter in Middletown, DE · enumerated 2008.

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

National Provider Identifier

1447426374

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Registry record

Entity type Individual (Type 1)
Name Ms. Lisa J. Marencin
Credential M.S.
Sex Female
Practice address 104 Sleepy Hollow Dr, Suite 202, Middletown, DE, 19709
Phone (302) 376-3500
Fax (302) 376-5758
Enumeration date Apr 30, 2008
Last updated in NPPES Nov 3, 2017

Taxonomy & licenses

237600000X Audiologist-Hearing Aid Fitter Speech, Language and Hearing Service Providers · License 020000050 (DE) 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.

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Frequently asked questions

What specialty is Lisa Marencin?
Lisa Marencin is registered in NPPES with the primary taxonomy of Audiologist-Hearing Aid Fitter. 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-11-03.