Quick answers
- Does Mariana S. Martinez Aguiar accept Medicare assignment?
- Yes. Medicare's clinician data says Mariana S. Martinez Aguiar 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 Mariana S. Martinez Aguiar's NPI number?
- 1831680065. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mariana S. Martinez Aguiar works
Medicare's Facility Affiliation Data lists Mariana S. Martinez Aguiar at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Hospital Universitario Dr Ruiz ArnauBayamon, PR · Acute Care Hospital · Emergency services: listed by Medicare · CCN 400105
Practice locations
Addresses where Mariana S. Martinez Aguiar is enrolled with Medicare (CMS data updated October 2, 2026).
- 1607 Ave Ponce De Leon, Suite Gm4San Juan, PR 00909 (787) 910‑0909
Specialties
- Internal Medicineprimary
Other internal medicine doctors in San Juan
Clinicians with the same Medicare primary specialty in San Juan, PR — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2015 (11 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1831680065 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians