Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gerylyn Sebastian, LSW

Case Manager/Care Coordinator in Harrisburg, PA · enumerated 2017.

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

National Provider Identifier

1780122747

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Registry record

Entity type Individual (Type 1)

Name Gerylyn Sebastian

Credential LSW

Sex Female

Practice address 4111 Green Ct, Harrisburg, PA, 17110

Phone (717) 903-6356

Enumeration date Feb 9, 2017

Last updated in NPPES Feb 9, 2017

Taxonomy & licenses

171M00000X Case Manager/Care Coordinator Other Service Providers · License SW132569 (PA) Primary

172V00000X Community Health Worker Other Service Providers · License SW132569 (PA) Secondary

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

Where does Gerylyn Sebastian practice?

The practice location on file with NPPES is in Harrisburg, PA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Gerylyn Sebastian?

The National Provider Identifier (NPI) for Gerylyn Sebastian is 1780122747, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-02-09.