Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Instituto De Hematologia Y Oncologia Medica Del Oeste

Specialist in Mayaguez, PR · enumerated 2007 · authorized official Norberto Santiago, Owner.

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

National Provider Identifier

1821295007

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Registry record

Entity type Organization (Type 2)

Legal business name Instituto De Hematologia Y Oncologia Medica Del Oeste

Practice address Dr Basora Street 55n, Edificio Medico IV, Mayaguez, PR, 00680

Phone (787) 831-6422

Fax (787) 831-6428

Enumeration date Jun 29, 2007

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

174400000X Specialist Other Service Providers · License 9157 (PR) Primary

Authorized official

Name Norberto Santiago

Title Owner

Phone (787) 831-6422

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 type of organization is Instituto De Hematologia Y Oncologia Medica Del Oeste?

Instituto De Hematologia Y Oncologia Medica Del Oeste is registered in NPPES as a Specialist (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.