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Internal Medicine

Guadalupe Santiago, MD

Works at hospitals in Arecibo, PR · Puerto Rico

Summary

Dr. Guadalupe Santiago, MD is an internal medicine doctor at 32 Ave Jose De Diego, Arecibo, PR 00612. Phone: (787) 879-3978. Accepts Medicare assignment. NPI 1558322826. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 32 Ave Jose De Diego, Arecibo, PR 00612 · Directions
  • Phone: (787) 879‑3978
  • Medicare: Accepts Medicare assignment
  • Hospital: Hospital Metropolitano Dr Susoni
  • Medical school: University Central Del Caribe Escuela De Medicina · graduated 1981 (45 years since medical school)
  • Gender (as listed): Male
Call(787) 879‑3978 NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about Guadalupe Santiago, 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 Guadalupe Santiago accept Medicare assignment?
Yes. Medicare's clinician data says Guadalupe Santiago 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 Guadalupe Santiago's NPI number?
1558322826. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Guadalupe Santiago works

Medicare's Facility Affiliation Data lists Guadalupe Santiago 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.

Practice locations

Addresses where Guadalupe Santiago is enrolled with Medicare (CMS data updated October 2, 2026).

Specialties

Find other Internal Medicine doctors in Puerto Rico →

Other internal medicine doctors in Arecibo

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

All internal medicine doctors in Arecibo →

Clinician information

CredentialMD
Medical schoolUniversity Central Del Caribe Escuela De Medicina
Graduation year1981 (45 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1558322826
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. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians