Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Arlene Maria Abreu Rivera, MD

Internal Medicine Physician in Caguas, PR · enumerated 2007.

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

National Provider Identifier

1801090261

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Registry record

Entity type Individual (Type 1)

Name Arlene Maria Abreu Rivera

Credential MD

Sex Female

Practice address 100 Ave Luis Munoz Marin, Caguas, PR, 00725

Phone (787) 653-3434

Enumeration date Jun 12, 2007

Last updated in NPPES Mar 9, 2022

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 10875 (PR) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 196538 (NY) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 10875 (PR) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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

Where does Arlene Abreu Rivera practice?

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

What is the NPI number for Arlene Abreu Rivera?

The National Provider Identifier (NPI) for Arlene Abreu Rivera is 1801090261, 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 2022-03-09.