Yasser K. Abdelbaki, MD

Medicare activity in 2024

Official CMS public-use data for Yasser K. Abdelbaki, 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 35 minutes (99232)704 services
2. Hospital discharge day management, more than 30 minutes (99239)276 services
3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)165 services
4. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)91 services
5. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)37 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%
• Arthritis71%
• Ischemic heart disease71%
• Diabetes54%
• Chronic kidney disease50%

Hospitals where Yasser K. Abdelbaki works

Medicare's Facility Affiliation Data lists Yasser K. Abdelbaki 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.

• John T Mather Memorial Hospital of Port JeffersonPort Jefferson, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330185

Practice locations

Addresses where Yasser K. Abdelbaki is enrolled with Medicare (CMS data updated October 2, 2026).

• 75 N Country RdPort Jefferson, NY 11777 (631) 473‑1320

Group practices

Medicare enrollment lists Yasser K. Abdelbaki as a member of this group (CMS data updated October 2, 2026).

• John T Mather Memorial Hospital175 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in New York →

Other internal medicine doctors in Port Jefferson

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

• Mohsin Zaman, MD
• Amna Ejaz, MD
• Muhammad Cheema, MD
• Iryna Ilyasova, MD
• Czariavna Javed, MD
• Nataliya Titarenko, MD
• Christopher Tanchez, DO
• Priscilla Persaud, MD

All internal medicine doctors in Port Jefferson →

Other clinicians in John T Mather Memorial Hospital

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

• Susan Brite, PA
• Mohammad A. Bilal, MD
• Amna Ejaz, MD
• Karen Sproul, NP
• Kathleen Fanelli, NP
• Muhammad Cheema, 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