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Internal Medicine

Marcos A. Velazquez, MD

Sees patients in Mayaguez, PR · Puerto Rico

Summary

Dr. Marcos A. Velazquez, MD is an internal medicine doctor at 55 Calle De Diego E, Suite 303 304, Mayaguez, PR 00680. Phone: (787) 833-6100. Accepts Medicare assignment. In 2024, Marcos A. Velazquez had 55 Original Medicare patients and 146 services. NPI 1518925288. 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: 55 Calle De Diego E, Suite 303 304, Mayaguez, PR 00680 · Directions
  • Phone: (787) 833‑6100
  • Medicare: Accepts Medicare assignment
  • Group practice: CPR Cardio Care, CSP
  • Medical school: graduated 1983 (43 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Marcos A. Velazquez, 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 Marcos A. Velazquez accept Medicare assignment?
Yes. Medicare's clinician data says Marcos A. Velazquez 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 Marcos A. Velazquez see?
In 2024, CMS data shows 55 Original Medicare patients and 146 services for Marcos A. Velazquez. This counts Original Medicare only and measures volume, not quality.
What is Marcos A. Velazquez's NPI number?
1518925288. 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 Marcos A. Velazquez, 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 patients55
Services billed to Medicare146
Different services or procedures18
Participating Medicare providerYes
Average age of these patients77

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)74 services
  2. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)20 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%
  • Diabetes64%
  • Chronic kidney disease53%
  • Arthritis35%
  • Ischemic heart disease25%

Practice locations

Addresses where Marcos A. Velazquez is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Marcos A. Velazquez as a member of this group (CMS data updated October 2, 2026).

  • CPR Cardio Care, CSP2 clinicians in the group

Specialties

Find other Internal Medicine doctors in Puerto Rico →

Other internal medicine doctors in Mayaguez

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

All internal medicine doctors in Mayaguez →

Other clinicians in CPR Cardio Care, CSP

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

Clinician information

CredentialMD
Graduation year1983 (43 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1518925288
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