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Gastroenterology

Esteban Castro-Diaz, MD

Sees patients in Fajardo, PR · Carolina, PR · Puerto Rico

Summary

Esteban Castro-Diaz, MD (Gastroenterology) is enrolled with Medicare at 2 practice locations in Fajardo, PR and Carolina, PR. NPI 1407920580. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

Call(787) 860‑6300 NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about Esteban Castro-Diaz, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

2Practice locations
GastroenterologyPrimary specialty
YesAccepts Medicare assignment
42Years since medical school (graduated 1984)
University Of Puerto Rico School Of MedicineMedical school
MaleGender (as listed)

Quick answers

Where does Esteban Castro-Diaz see patients?
Medicare's clinician data lists 2 practice locations, including Fajardo, PR and Carolina, PR. Call before your visit to confirm the address.
What is Esteban Castro-Diaz's specialty?
Medicare lists Gastroenterology as the primary specialty, and also Internal Medicine.
Does Esteban Castro-Diaz accept Medicare assignment?
Yes. Medicare's clinician data says Esteban Castro-Diaz accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Esteban Castro-Diaz?
(787) 860-6300, as listed in official Medicare / NPI Registry data.
What is Esteban Castro-Diaz's NPI number?
1407920580. 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 Esteban Castro-Diaz is enrolled with Medicare (CMS data updated 2026-10-02).

Specialties

Find other Gastroenterology doctors in Puerto Rico →

Other gastroenterologists in Puerto Rico

Clinicians with the same Medicare primary specialty in Puerto Rico — not a recommendation.

All gastroenterologists in Puerto Rico →

Clinician information

CredentialMD
Medical schoolUniversity Of Puerto Rico School Of Medicine
Graduation year1984
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1407920580
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 2026-10-02, retrieved 2026-10-29
  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