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Otolaryngology

Gabriel Hernandez Martin, MD

Sees patients in San Juan, PR · Puerto Rico

Summary

Dr. Gabriel Hernandez Martin, MD is an ENT doctor at 1452 Ave Ashford, Suite 1b, San Juan, PR 00907. Phone: (787) 503-0588. Accepts Medicare assignment. In 2024, Gabriel Hernandez Martin had 95 Original Medicare patients and 286 services. NPI 1912326752. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: ENT doctor (Medicare lists Otolaryngology)
  • Address: 1452 Ave Ashford, Suite 1b, San Juan, PR 00907 · Directions
  • Phone: (787) 503‑0588
  • Medicare: Accepts Medicare assignment
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Gabriel Hernandez Martin, 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 Gabriel Hernandez Martin accept Medicare assignment?
Yes. Medicare's clinician data says Gabriel Hernandez Martin 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.
How many Medicare patients does Gabriel Hernandez Martin see?
In 2024, CMS data shows 95 Original Medicare patients and 286 services for Gabriel Hernandez Martin. This counts Original Medicare only and measures volume, not quality.
What is Gabriel Hernandez Martin's NPI number?
1912326752. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Gabriel Hernandez Martin, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients95
Services billed to Medicare286
Different services or procedures24
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)72 services
  2. Removal of impacted ear wax (69210)55 services
  3. Diagnostic exam of nasal passages using an endoscope (31231)43 services
  4. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)36 services
  5. Diagnostic exam of voice box using a flexible endoscope (31575)18 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Diabetes61%
  • Arthritis43%
  • Chronic kidney disease29%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)26%

Practice locations

Addresses where Gabriel Hernandez Martin is enrolled with Medicare (CMS data updated October 2, 2026).

Specialties

Find other Otolaryngology doctors in Puerto Rico →

Other ENT doctors in San Juan

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

All ENT doctors in San Juan →

Clinician information

CredentialMD
Medical schoolUniversity Of Puerto Rico School Of Medicine
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1912326752
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. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians