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

Dr. Alicia Guilloty Rivera, MD

General Practice Physician in Hatillo, PR · enumerated 2010.

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

National Provider Identifier

1942500954

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Registry record

Entity type Individual (Type 1)

Name Dr. Alicia Guilloty Rivera

Credential MD

Sex Female

Practice address Hatillo, PR, 00659

Phone (787) 672-1835

Fax (787) 650-8257

Enumeration date Oct 25, 2010

Last updated in NPPES Nov 4, 2025

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

Taxonomy & licenses

208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License 18011 (PR) Primary

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

Other identifiers

Identifier	Type	State	Issuer
18011	Other	PR	THE PUERTO RICO BOARD OF LICENSING AND MEDICAL DISCIPLINES

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 Alicia Guilloty Rivera?

The National Provider Identifier (NPI) for Alicia Guilloty Rivera is 1942500954, a Type 1 (individual) record in the CMS NPPES registry.

Where does Alicia Guilloty Rivera practice?

The practice location on file with NPPES is in Hatillo, 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 2025-11-04.