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Cardiovascular Disease (Cardiology)

Teodoro H. Mercado, MD

Sees patients in San Juan, PR · Manati, PR · Puerto Rico

Summary

Dr. Teodoro H. Mercado, MD is a cardiologist at 525 Ave Fd Roosevelt, San Juan, PR 00918. Phone: (787) 759-8157. Accepts Medicare assignment. In 2024, Teodoro H. Mercado had 31 Original Medicare patients and 120 services. NPI 1447270038. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Cardiologist (Medicare lists Cardiovascular Disease (Cardiology))
  • Address: 525 Ave Fd Roosevelt, San Juan, PR 00918 · Directions (4 more locations)
  • Phone: (787) 759‑8157
  • Medicare: Accepts Medicare assignment
  • Group practice: CCS PSC
  • Medical school: graduated 1988 (38 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Teodoro H. Mercado, 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 Teodoro H. Mercado accept Medicare assignment?
Yes. Medicare's clinician data says Teodoro H. Mercado 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 Teodoro H. Mercado see?
In 2024, CMS data shows 31 Original Medicare patients and 120 services for Teodoro H. Mercado. This counts Original Medicare only and measures volume, not quality.
What is Teodoro H. Mercado's NPI number?
1447270038. 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 Teodoro H. Mercado, 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 patients31
Services billed to Medicare120
Different services or procedures10
Participating Medicare providerYes
Average age of these patients75

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)52 services
  2. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)27 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%
  • Ischemic heart disease75%
  • Diabetes61%
  • Arthritis42%
  • Chronic kidney disease42%

Practice locations

Addresses where Teodoro H. Mercado is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Teodoro H. Mercado as a member of this group (CMS data updated October 2, 2026).

  • CCS PSC12 clinicians in the group

Specialties

Find other Cardiovascular Disease (Cardiology) doctors in Puerto Rico →

Other cardiologists in San Juan

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

All cardiologists in San Juan →

Other clinicians in CCS PSC

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

Clinician information

CredentialMD
Graduation year1988 (38 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1447270038
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