Shadab H. Ahmed, MD

Medicare activity in 2024

Official CMS public-use data for Shadab H. Ahmed, 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)146 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)140 services
3. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)64 services
4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)40 services
5. Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes (99221)16 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%
• Diabetes60%
• Ischemic heart disease55%
• Arthritis53%
• Chronic kidney disease52%

Hospitals where Shadab H. Ahmed works

Medicare's Facility Affiliation Data lists Shadab H. Ahmed 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.

• Nassau University Medical CenterEast Meadow, NY · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 330027

Practice locations

Addresses where Shadab H. Ahmed is enrolled with Medicare (CMS data updated October 2, 2026).

• 2201 Hempstead TpkeEast Meadow, NY 11554 (516) 486‑6862
• 875 Jerusalem AveUniondale, NY 11553 (516) 572‑1510

Group practices

Medicare enrollment lists Shadab H. Ahmed as a member of this group (CMS data updated October 2, 2026).

• Nassau Health Care Corporation178 clinicians in the group

Specialties

• Infectious Diseaseprimary
• Internal Medicinealso

Find other Infectious Disease doctors in New York →

Other infectious disease doctors in New York

Clinicians with the same Medicare primary specialty in New York — not a recommendation.

• Tabassum Yasmin, MD
• Maryrose R. Laguio, MD
• Sabirah Kasule, MD
• George Alonso, MD
• David Bekhor, MD
• Demetre Daskalakis
• Caroline E. Mullis, MD
• Robin Hampton, MD

All infectious disease doctors in New York →

Other clinicians in Nassau Health Care Corporation

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

• Kermaan G. Mehta, MD
• Stephanie Q. Chiang, DO
• Adam C. Isaacson, MD
• Larisa Kleymenova, DO
• Robert J. Stabile, DPM
• Charles J. Ruotolo, 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