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General Practice

Johnniel Ortiz Mendez, MD

Sees patients in San Sebastian, PR · Puerto Rico

Summary

Dr. Johnniel Ortiz Mendez, MD is a general practitioner at Calle Jose Mendez Cardona, San Sebastian, PR 00685. Phone: (787) 896-1850. Accepts Medicare assignment. NPI 1720709975. Source: CMS National Downloadable File, updated October 2, 2026.

  • Specialty: General practitioner (Medicare lists General Practice)
  • Address: Calle Jose Mendez Cardona, San Sebastian, PR 00685 · Directions (2 more locations)
  • Phone: (787) 896‑1850
  • Medicare: Accepts Medicare assignment
  • Group practice: Centro de Diagnostico y Tratamiento de San Sebastian Inc
  • Medical school: graduated 2018 (8 years since medical school)
  • Gender (as listed): Male
Call(787) 896‑1850 NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about Johnniel Ortiz Mendez, 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 Johnniel Ortiz Mendez accept Medicare assignment?
Yes. Medicare's clinician data says Johnniel Ortiz Mendez 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 Johnniel Ortiz Mendez's NPI number?
1720709975. 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 Johnniel Ortiz Mendez is enrolled with Medicare (CMS data updated October 2, 2026).

  • Calle Jose Mendez CardonaSan Sebastian, PR 00685 (787) 896‑1850
  • Calle Jose Mendez Cardona, 3 PO Box 486San Sebastian, PR 00685
  • Calle Jose Mendez Cardona No, 3 2nd Floor Suite 206San Sebastian, PR 00685 (787) 896‑1850

Group practices

Medicare enrollment lists Johnniel Ortiz Mendez as a member of this group (CMS data updated October 2, 2026).

  • Centro de Diagnostico y Tratamiento de San Sebastian Inc8 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 year2018 (8 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1720709975
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