Servando G. De Los Angeles, MD

Medicare activity in 2024

Official CMS public-use data for Servando G. De Los Angeles, 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 moderate level of medical decision making (99284)332 services
2. Emergency department visit with high level of medical decision making (99285)201 services
3. Emergency department visit with low level of medical decision making (99283)45 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%
• Arthritis54%
• Anxiety37%
• Ischemic heart disease31%
• Depression31%

Hospitals where Servando G. De Los Angeles works

Medicare's Facility Affiliation Data lists Servando G. De Los Angeles 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.

• Greenwich Hospital Association -Greenwich, CT · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 070018

Practice locations

Addresses where Servando G. De Los Angeles is enrolled with Medicare (CMS data updated October 2, 2026).

• 5 Perryridge RdGreenwich, CT 06830 (203) 863‑3000

Group practices

Medicare enrollment lists Servando G. De Los Angeles as a member of this group (CMS data updated October 2, 2026).

• Greenwich Hospital76 clinicians in the group

Specialties

• Emergency Medicineprimary

Find other Emergency Medicine doctors in Connecticut →

Other emergency medicine doctors in Greenwich

Clinicians with the same Medicare primary specialty in Greenwich, CT — not a recommendation.

• Jan Zislis, MD
• Bonnie M. McGuire Wreschner, MD
• Renee Baranin, MD
• Brenda Liu, MD
• Alexandra Meis, MD
• Tania V. Mariani, MD
• Michelle Haimowitz, MD
• William Shestak, DO

All emergency medicine doctors in Greenwich →

Other clinicians in Greenwich Hospital

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

• Steven Purcell
• Tracey Stephen, CSW
• Jan Zislis, MD
• Joshua C. Pollack, MD
• Yasminda Downer-Muse, NP
• Brenda Liu, 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