Ronald L. Drengler, MD

Medicare activity in 2024

Official CMS public-use data for Ronald L. Drengler, 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. Injection, nivolumab, 1 mg (J9299)71,260 services
2. Injection, oxaliplatin, 0.5 mg (J9263)32,706 services
3. Injection, eflapegrastim-xnst, 0.1 mg (J1449)22,968 services
4. Injection, ferric carboxymaltose, 1 mg (J1439)21,750 services
5. Injection, pembrolizumab, 1 mg (J9271)19,600 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%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)53%
• Arthritis44%
• Ischemic heart disease42%
• Chronic kidney disease39%

Hospitals where Ronald L. Drengler works

Medicare's Facility Affiliation Data lists Ronald L. Drengler 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.

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

Practice locations

Addresses where Ronald L. Drengler is enrolled with Medicare (CMS data updated October 2, 2026).

• 155 E Sonterra Blvd, Suite 200San Antonio, TX 78258 (210) 593‑5700
• 4383 Medical DrSan Antonio, TX 78229 (210) 593‑5700

Group practices

Medicare enrollment lists Ronald L. Drengler as a member of this group (CMS data updated October 2, 2026).

• South Texas Oncology and Hematology, PLLC41 clinicians in the group

Specialties

• Medical Oncologyprimary

Find other Medical Oncology doctors in Texas →

Other oncologists in San Antonio

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

• Vijay K. Gunuganti, MD
• Muralidhar Beeram, MD
• Jessica T. Jones, MD
• Lon S. Smith, MD
• Jesse E. Medellin, MD
• Angel E. Mier Hicks, MD
• Deven K. Bhachawat, MD
• Edsel L. Hesita, MD

All oncologists in San Antonio →

Other clinicians in South Texas Oncology and Hematology, PLLC

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

• Marisa Sandera, MD
• Erica R. Hope, MD
• Scott C. Ulmer, MD
• Brittany B. Deberry, MD
• Amy S. Lang, MD
• Bruce E. Conway, 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