Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Antonia Sharkey

Behavior Analyst in Fremont, CA · enumerated 2025.

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

National Provider Identifier

1548069818

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Registry record

Entity type Individual (Type 1)

Name Antonia Sharkey

Sex Female

Practice address 39210 State St Ste 220, Fremont, CA, 94538

Phone (510) 894-4135

Enumeration date Mar 10, 2025

Last updated in NPPES Mar 10, 2025

Taxonomy & licenses

103K00000X Behavior Analyst Behavioral Health & Social Service Providers 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

What specialty is Antonia Sharkey?

Antonia Sharkey is registered in NPPES with the primary taxonomy of Behavior Analyst. 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 2025-03-10.