Amer Zeidan, MD

Medicare activity in 2024

Official CMS public-use data for Amer Zeidan, 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 50 minutes (99233)86 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)68 services
3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)67 services
4. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)39 services
5. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)12 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%
• Arthritis37%
• Ischemic heart disease36%
• Chronic kidney disease33%
• Diabetes32%

Hospitals where Amer Zeidan works

Medicare's Facility Affiliation Data lists Amer Zeidan 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.

• Yale-New Haven HospitalNew Haven, CT · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 070022

Practice locations

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

• 20 York StNew Haven, CT 06510 (203) 688‑2433

Group practices

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

• Yale University2,645 clinicians in the group

Specialties

• Medical Oncologyprimary
• Hematologyalso

Find other Medical Oncology doctors in Connecticut →

Other oncologists in New Haven

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

• Raghav Sundar
• Stuart E. Seropian, MD
• Joseph W. Kim, MD
• David Braun
• Michael P. Digiovanna, MD
• Ian E. Krop
• Nikolai A. Podoltsev, MD
• Sarah E. Schellhorn, MD

All oncologists in New Haven →

Other clinicians in Yale University

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

• Annie M. Wang, MD
• Cristina Gioioso Datta, MD
• Bohdan Pomahac, MD
• Sanjay Kulkarni, MD
• Taneisha Grant, MD
• Sanjay Aneja, 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