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Urology

Carlos Andres Rivera Lopez, MD

Works at hospitals in Baltimore, MD · Maryland

Summary

Dr. Carlos Andres Rivera Lopez, MD is a urologist at 4940 Eastern Ave, Baltimore, MD 21224. Phone: (410) 502-4340. May accept Medicare assignment. In 2024, Carlos Andres Rivera Lopez had 26 Original Medicare patients and 55 services. NPI 1124575436. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Carlos Andres Rivera Lopez, 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 Carlos Andres Rivera Lopez accept Medicare assignment?
Medicare's clinician data says Carlos Andres Rivera Lopez may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
How many Medicare patients does Carlos Andres Rivera Lopez see?
In 2024, CMS data shows 26 Original Medicare patients and 55 services for Carlos Andres Rivera Lopez. This counts Original Medicare only and measures volume, not quality.
What is Carlos Andres Rivera Lopez's NPI number?
1124575436. 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 Carlos Andres Rivera Lopez, 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 patients26
Services billed to Medicare55
Different services or procedures16
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)22 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%
  • Atrial fibrillation54%
  • Arthritis46%
  • Chronic kidney disease46%
  • Diabetes42%

Hospitals where Carlos Andres Rivera Lopez works

Medicare's Facility Affiliation Data lists Carlos Andres Rivera Lopez 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 Carlos Andres Rivera Lopez is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Carlos Andres Rivera Lopez as a member of this group (CMS data updated October 2, 2026).

  • Johns Hopkins University2,909 clinicians in the group

Specialties

Find other Urology doctors in Maryland →

Other urologists in Baltimore

Clinicians with the same Medicare primary specialty in Baltimore, MD — not a recommendation.

All urologists in Baltimore →

Other clinicians in Johns Hopkins University

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

Clinician information

CredentialMD
Medical schoolUniversity Of Puerto Rico School Of Medicine
Graduation year2024 (2 years since medical school)
Gender (as listed)Male
Medicare assignmentMay accept for some services
TelehealthOffers telehealth services
NPI (National Provider Identifier)1124575436
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. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians