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

Dr. Ithamar Castro, DMD

Pediatric Dentistry in Guaynabo, PR · enumerated 2007.

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

National Provider Identifier

1447309273

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Registry record

Entity type Individual (Type 1)
Name Dr. Ithamar Castro
Credential DMD
Sex Female
Practice address Guaynabo, PR, 00966
Phone (787) 783-6698
Fax (787) 793-3105
Enumeration date Jan 10, 2007
Last updated in NPPES Apr 5, 2025

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

Taxonomy & licenses

1223P0221X Pediatric Dentistry Dental Providers · License 2239 (PR) Primary
DMD — Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD credential

Other identifiers

Identifier Type State Issuer
2048340 Other PR UNITED CONCORDIA
1447309273 Other PR HUMANA
42159 Other PR TRIPLE-S

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 Ithamar Castro practice?
The practice location on file with NPPES is in Guaynabo, PR. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Ithamar Castro?
The National Provider Identifier (NPI) for Ithamar Castro is 1447309273, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-04-05.