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

General Practice

Japhet D. Matos Nieves, MD

Sees patients in San Sebastian, PR · Quebradillas, PR · Puerto Rico

Summary

Dr. Japhet D. Matos Nieves, MD is a general practitioner at Calle Jose Mendez Cardona, Suite 3, San Sebastian, PR 00685. Phone: (787) 896-1850. May accept Medicare assignment. NPI 1538756333. Source: CMS National Downloadable File, updated October 2, 2026.

  • Specialty: General practitioner (Medicare lists General Practice)
  • Address: Calle Jose Mendez Cardona, Suite 3, San Sebastian, PR 00685 · Directions (1 more location)
  • Phone: (787) 896‑1850
  • Medicare: May accept Medicare assignment
  • Group practice: Centro de Diagnostico y Tratamiento de San Sebastian Inc (+1 more)
  • Medical school: graduated 2012 (14 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Japhet D. Matos Nieves, 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 Japhet D. Matos Nieves accept Medicare assignment?
Medicare's clinician data says Japhet D. Matos Nieves may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
What is Japhet D. Matos Nieves's NPI number?
1538756333. 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 Japhet D. Matos Nieves is enrolled with Medicare (CMS data updated October 2, 2026).

  • Calle Jose Mendez Cardona, Suite 3San Sebastian, PR 00685 (787) 896‑1850
  • Carr 2 Km, 6 Bo. Terranova Calle Marginal Del ParqueQuebradillas, PR 00678

Group practices

Medicare enrollment lists Japhet D. Matos Nieves as a member of these groups (CMS data updated October 2, 2026).

  • Centro de Diagnostico y Tratamiento de San Sebastian Inc8 clinicians in the group
  • Policlinica Familiar Shalom Inc5 clinicians in the group

Specialties

Find other General Practice doctors in Puerto Rico →

Other general practitioners in San Sebastian

Clinicians with the same Medicare primary specialty in San Sebastian, PR — not a recommendation.

All general practitioners in San Sebastian →

Other clinicians in Centro de Diagnostico y Tratamiento de San Sebastian Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year2012 (14 years since medical school)
Gender (as listed)Male
Medicare assignmentMay accept for some services
NPI (National Provider Identifier)1538756333
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