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

Olivia Gesimondo

Mental Health Counselor in Babylon, NY · enumerated 2021.

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

National Provider Identifier

1831776947

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Registry record

Entity type Individual (Type 1)
Name Olivia Gesimondo
Sex Female
Practice address Babylon, NY, 11702
Phone (631) 793-1881
Enumeration date Mar 25, 2021
Last updated in NPPES Nov 13, 2024

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

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary
101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 014207 (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

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 Olivia Gesimondo?
Olivia Gesimondo is registered in NPPES with the primary taxonomy of Mental Health Counselor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-11-13.