Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Justine Nicole Maresca

Clinical Social Worker in Porter, IN · enumerated 2022.

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

National Provider Identifier

1841920857

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Registry record

Entity type Individual (Type 1)

Name Justine Nicole Maresca

Sex Female

Practice address Porter, IN, 46304

Phone (219) 510-4156

Enumeration date Jun 13, 2022

Last updated in NPPES Jun 23, 2023

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 99108823A (IN) Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 33011193A (IN) 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 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.

What specialty is Justine Maresca?

Justine Maresca is registered in NPPES with the primary taxonomy of Clinical Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-06-23.