Keysha M. Lopez Vega, MD

Medicare activity in 2024

Official CMS public-use data for Keysha M. Lopez Vega, 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.

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)170 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)54 services
3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)31 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%
• Chronic kidney disease75%
• High cholesterol64%
• Diabetes59%
• Ischemic heart disease21%
• Heart failure21%

Hospitals where Keysha M. Lopez Vega works

Medicare's Facility Affiliation Data lists Keysha M. Lopez Vega 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.

• Auxilio Mutuo HospitalSan Juan, PR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 400016

Practice locations

Addresses where Keysha M. Lopez Vega is enrolled with Medicare (CMS data updated October 2, 2026).

• Bo Monacillos Centro Medico De Pr, Administracion De Servicios Medicos (asem)Rio Piedras, PR 00935 (787) 777‑3535
• Ponce De Leon Ave, 715 Stop 37.5San Juan, PR 00918 (787) 771‑7934

Group practices

Medicare enrollment lists Keysha M. Lopez Vega as a member of these groups (CMS data updated October 2, 2026).

• Recinto de Ciencias Medicas247 clinicians in the group
• Hospital Espanol Auxilio Mutuo de Puerto Rico, Inc.54 clinicians in the group

Specialties

• Nephrologyprimary
• Internal Medicinealso

Find other Nephrology doctors in Puerto Rico →

Other nephrologists in Puerto Rico

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

• Eduardo J. Diaz, MD
• Luis Antonio I. Vazquez Zubillaga, MD
• Rodolfo Troche, MD
• Bryan L. Pagan Rivera, MD
• Alberto E. Arevalo Roig, MD
• Alejandra A. Villagrasa Flores, MD
• Ricardo Calderon Ortiz, MD
• Fatima B. Cintron-Rosa, MD

All nephrologists in Puerto Rico →

Other clinicians in Recinto de Ciencias Medicas

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

• Carmen D. Zorrilla, MD
• Maritere Olascoaga-Torres
• Eduardo J. Muniz - Velez, MD
• Marcos G. Salgado-Crespo, MD
• Magdiel Mayol Urdaz, MD
• Miguel R. Garraton Martin, MD

Clinician information

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