Ruben D. Troncoso Jr., MD

Medicare activity in 2024

Official CMS public-use data for Ruben D. Troncoso Jr., 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. Emergency department visit with high level of medical decision making (99285)146 services
2. Emergency department visit with moderate level of medical decision making (99284)115 services
3. Critical care, first 30-74 minutes (99291)41 services
4. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)13 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 cholesterol74%
• Arthritis57%
• Diabetes49%
• Chronic kidney disease49%
• Depression47%

Hospitals where Ruben D. Troncoso Jr. works

Medicare's Facility Affiliation Data lists Ruben D. Troncoso Jr. 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.

• Johns Hopkins Bayview Medical CenterBaltimore, MD · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 210029
• The Johns Hopkins HospitalBaltimore, MD · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 210009

Practice locations

Addresses where Ruben D. Troncoso Jr. is enrolled with Medicare (CMS data updated October 2, 2026).

• 4940 Eastern AveBaltimore, MD 21224
• 600 N Wolf StBaltimore, MD 21287
• 600 N Wolfe St, Blalock 266Baltimore, MD 21287 (410) 502‑4340

Group practices

Medicare enrollment lists Ruben D. Troncoso Jr. as a member of this group (CMS data updated October 2, 2026).

• Johns Hopkins University2,909 clinicians in the group

Specialties

• Emergency Medicineprimary

Find other Emergency Medicine doctors in Maryland →

Other emergency medicine doctors in Baltimore

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

• Matthew J. Levy, DO
• Kristyn N. McLeod, MD
• Bennett A. Myers, MD
• Monika Misak, MD
• Marcus F. Sciadini, MD
• William A. Teeter, MD
• Wan-Tsu W. Chang, MD
• Lucille Martin, MD

All emergency medicine doctors in Baltimore →

Other clinicians in Johns Hopkins University

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

• Brett C. Parker, MD
• Stephanie E. Green, MD
• Lukasz Gondek, MD
• Brian C. Cho, MD
• Maryam Jaberi, MD
• David Tunkel, 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