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

Español Near me My list Help
US Patient GuideUSA
Surprise me
Endocrinology

Marimar Hernandez Hernandez, MD

Sees patients in San Juan, PR · Caguas, PR · Puerto Rico

Summary

Dr. Marimar Hernandez Hernandez, MD is an endocrinologist at Avenida Ponce De Leon 1801 Santurce Medical Mall, Suite 308, San Juan, PR 00909. May accept Medicare assignment. NPI 1518421189. Source: CMS National Downloadable File, updated October 2, 2026.

  • Specialty: Endocrinologist (Medicare lists Endocrinology)
  • Address: Avenida Ponce De Leon 1801 Santurce Medical Mall, Suite 308, San Juan, PR 00909 · Directions (1 more location)
  • Medicare: May accept Medicare assignment
  • Medical school: graduated 2021 (5 years since medical school)
  • Gender (as listed): Female
NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about Marimar Hernandez Hernandez, 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 Marimar Hernandez Hernandez accept Medicare assignment?
Medicare's clinician data says Marimar Hernandez Hernandez may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
What is Marimar Hernandez Hernandez's NPI number?
1518421189. 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 Marimar Hernandez Hernandez is enrolled with Medicare (CMS data updated October 2, 2026).

  • Avenida Ponce De Leon 1801 Santurce Medical Mall, Suite 308San Juan, PR 00909
  • PO BoxCaguas, PR 00726

Specialties

Find other Endocrinology doctors in Puerto Rico →

Other endocrinologists in San Juan

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

All endocrinologists in San Juan →

Clinician information

CredentialMD
Graduation year2021 (5 years since medical school)
Gender (as listed)Female
Medicare assignmentMay accept for some services
NPI (National Provider Identifier)1518421189
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