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

Internal Medicine

Juan J. Bayron, MD

Sees patients in San Juan, PR · Puerto Rico

Summary

Dr. Juan J. Bayron, MD is an internal medicine doctor at 1791 Calle Esteban Padilla, San Juan, PR 00921. Phone: (787) 783-0399. Accepts Medicare assignment. In 2024, Juan J. Bayron had 27 Original Medicare patients and 68 services. NPI 1932104015. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 1791 Calle Esteban Padilla, San Juan, PR 00921 · Directions (1 more location)
  • Phone: (787) 783‑0399
  • Medicare: Accepts Medicare assignment
  • Group practice: Juan Jose Bayron Justiniano CSP
  • Medical school: graduated 1985 (41 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Juan J. Bayron, 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 Juan J. Bayron accept Medicare assignment?
Yes. Medicare's clinician data says Juan J. Bayron 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 Juan J. Bayron see?
In 2024, CMS data shows 27 Original Medicare patients and 68 services for Juan J. Bayron. This counts Original Medicare only and measures volume, not quality.
What is Juan J. Bayron's NPI number?
1932104015. 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 Juan J. Bayron, 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 patients27
Services billed to Medicare68
Different services or procedures5
Participating Medicare providerYes
Average age of these patients78

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)59 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%
  • Diabetes70%
  • Chronic kidney disease63%

Practice locations

Addresses where Juan J. Bayron is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Juan J. Bayron as a member of this group (CMS data updated October 2, 2026).

  • Juan Jose Bayron Justiniano CSP2 clinicians in the group

Specialties

Find other Internal Medicine doctors in Puerto Rico →

Other internal medicine doctors in San Juan

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

All internal medicine doctors in San Juan →

Other clinicians in Juan Jose Bayron Justiniano CSP

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

Clinician information

CredentialMD
Graduation year1985 (41 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1932104015
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