Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Centro De Cancer De La Montana Csp

Hematology & Oncology Physician in Aibonito, PR · enumerated 2005 · authorized official William Sierra, Director Rh.

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

National Provider Identifier

1225020662

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Registry record

Entity type Organization (Type 2)

Legal business name Centro De Cancer De La Montana Csp

Practice address Jose C. Vazquez #1 Dr. Troche, Km 4 Interior, Carr. 726, Aibonito, PR, 00705

Phone (787) 735-1888

Fax (787) 735-2080

Enumeration date Aug 22, 2005

Last updated in NPPES Jun 20, 2014

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Secondary

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name William Sierra

Title Director Rh

Phone (787) 740-3230

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 is Centro De Cancer De La Montana Csp located?

The practice location on file with NPPES is in Aibonito, PR.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2014-06-20. Verify at npiregistry.cms.hhs.gov.

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Centro De Cancer De La Montana Hematology & Oncology Physician · Aibonito, PR NPI 1538286927

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-06-20.