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

Sonia Ivette Sierra

Q: What is the NPI number for Sonia Sierra?

The National Provider Identifier (NPI) for Sonia Sierra is 1598372336, a Type 1 (individual) record in the CMS NPPES registry.

Pediatric Occupational Therapist in Cayey, PR · enumerated 2020.

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

National Provider Identifier

1598372336

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Registry record

Entity type Individual (Type 1)

Name Sonia Ivette Sierra

Sex Female

Practice address Cayey, PR, 00736

Phone (787) 249-2640

Enumeration date Sep 25, 2020

Last updated in NPPES Sep 25, 2020

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

Taxonomy & licenses

225XP0200X Pediatric Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 586 (PR) 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 is the NPI number for Sonia Sierra?

The National Provider Identifier (NPI) for Sonia Sierra is 1598372336, a Type 1 (individual) record in the CMS NPPES registry.

Where does Sonia Sierra practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-09-25.