Aaron Walfish, MD

Medicare activity in 2024

Official CMS public-use data for Aaron Walfish, 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. Biopsy of large bowel using a flexible endoscope (45380)17 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)17 services
3. Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)11 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 cholesterol71%
• Diabetes53%
• Arthritis41%
• Ischemic heart disease41%
• Heart failure24%

Hospitals where Aaron Walfish works

Medicare's Facility Affiliation Data lists Aaron Walfish 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.

• Elmhurst Hospital CenterElmhurst, NY · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 330128

Practice locations

Addresses where Aaron Walfish is enrolled with Medicare (CMS data updated October 2, 2026).

• 7901 BroadwayElmhurst, NY 11373 (718) 334‑4952

Group practices

Medicare enrollment lists Aaron Walfish as a member of this group (CMS data updated October 2, 2026).

• Icahn School of Medicine at Mount Sinai316 clinicians in the group

Specialties

• Gastroenterologyprimary
• Internal Medicinealso

Find other Gastroenterology doctors in New York →

Other gastroenterologists in Elmhurst

Clinicians with the same Medicare primary specialty in Elmhurst, NY — not a recommendation.

• Joshua Aron, MD
• Robert A. Weiss, MD
• Anthony P. Chan, MD
• Chuansheng Wang
• Anastasia Novikov, MD
• Igal Khorshidi, MD
• Snow Trinh T. Nguyen, MD

All gastroenterologists in Elmhurst →

Other clinicians in Icahn School of Medicine at Mount Sinai

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

• Jeffrey J. Silbiger, MD
• Maria C. Mir Maresma, MD
• Naeem Ahmad, MD
• Jaimie E. Huntly, MD
• Eli Zarkhin, MD
• Tita Castor, 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