Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Shayna Angelina Sommer, CASAC

Addiction (Substance Use Disorder) Counselor in Port Chester, NY · enumerated 2021.

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

National Provider Identifier

1588333777

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Registry record

Entity type Individual (Type 1)

Name Shayna Angelina Sommer

Credential CASAC

Sex Female

Practice address 132 Pearl St, Port Chester, NY, 10573

Phone (914) 393-2700

Enumeration date Sep 10, 2021

Last updated in NPPES Nov 24, 2025

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 129783 (NY) Secondary

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 34814 (NY) 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

Where does Shayna Sommer practice?

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

What is the NPI number for Shayna Sommer?

The National Provider Identifier (NPI) for Shayna Sommer is 1588333777, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Emma Dimarco Clinical Social Worker · Port Chester, NY NPI 1619208154 Renaissance Project Community/Behavioral Health Agency · Port Chester, NY NPI 1144551680 The Renaissance Project Inc Port Chester Substance Use Disorder Rehabilitation Clinic/Center · Port Chester, NY NPI 1083910392 Misael Martinez Addiction (Substance Use Disorder) Psychologist · Port Chester, NY NPI 1265072763 Viel Pena Addiction (Substance Use Disorder) Counselor · Port Chester, NY NPI 1225635410 Candice Francisco Addiction (Substance Use Disorder) Counselor · Port Chester, NY NPI 1710730304

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-11-24.