Alwin H. Lopez-Toro, MD

Medicare activity in 2024

Official CMS public-use data for Alwin H. Lopez-Toro, 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. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)413 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)154 services
3. Dialysis services, 4 or more physician visits per month (20 years or older) (90960)148 services
4. Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (99490)120 services
5. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)112 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%
• Diabetes75%
• Chronic kidney disease75%
• Ischemic heart disease48%
• Heart failure43%

Hospitals where Alwin H. Lopez-Toro works

Medicare's Facility Affiliation Data lists Alwin H. Lopez-Toro 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.

• Baptist Medical CenterSan Antonio, TX · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 450058
• Methodist HospitalSan Antonio, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 450388

Practice locations

Addresses where Alwin H. Lopez-Toro is enrolled with Medicare (CMS data updated October 2, 2026).

• 1123 N Main Ave, Suite 120San Antonio, TX 78212 (210) 226‑2001

Group practices

Medicare enrollment lists Alwin H. Lopez-Toro as a member of this group (CMS data updated October 2, 2026).

• Renal Associates, P.A.40 clinicians in the group

Specialties

• Nephrologyprimary
• Internal Medicinealso

Find other Nephrology doctors in Texas →

Other nephrologists in San Antonio

Clinicians with the same Medicare primary specialty in San Antonio, TX — not a recommendation.

• Suverta Bhayana, MD
• Samin Sharma, MD
• Ghassan S. Bandak, MD
• Tahira P. Alves, MD
• Karthik Kovvuru, MD
• Wajid Ali, MD
• Mir Tariq Ali, MD
• Michael V. Degaetano, DO

All nephrologists in San Antonio →

Other clinicians in Renal Associates, P.A.

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

• Carlos Zem, MD
• Lisa O. Cabrera, MD
• Matthias Simon, MD
• Muhammad Abdullah, MD
• Jessica L. Pierce, MD
• Rashid Sharaf, 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