Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Allergy/Immunology

Javier A. Mendez Ruiz, MD

Sees patients in Mayaguez, PR · Puerto Rico

Summary

Dr. Javier A. Mendez Ruiz, MD is an allergist and immunologist at 2 Calle Carrau, Mayaguez, PR 00680. Phone: (787) 510-8629. Accepts Medicare assignment. NPI 1205086410. Source: CMS National Downloadable File, updated October 2, 2026.

  • Specialty: Allergist and immunologist (Medicare lists Allergy/Immunology)
  • Address: 2 Calle Carrau, Mayaguez, PR 00680 · Directions
  • Phone: (787) 510‑8629
  • Medicare: Accepts Medicare assignment
  • Medical school: University Of Puerto Rico School Of Medicine · graduated 2008 (18 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Javier A. Mendez Ruiz, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Javier A. Mendez Ruiz accept Medicare assignment?
Yes. Medicare's clinician data says Javier A. Mendez Ruiz accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
What is Javier A. Mendez Ruiz's NPI number?
1205086410. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Javier A. Mendez Ruiz is enrolled with Medicare (CMS data updated October 2, 2026).

Specialties

Find other Allergy/Immunology doctors in Puerto Rico →

Other allergist and immunologists in Puerto Rico

Clinicians with the same Medicare primary specialty in Puerto Rico — not a recommendation.

All allergist and immunologists in Puerto Rico →

Clinician information

CredentialMD
Medical schoolUniversity Of Puerto Rico School Of Medicine
Graduation year2008 (18 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1205086410
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians