Quick answers
- Does Muhammad K. Perwaiz accept Medicare assignment?
- Yes. Medicare's clinician data says Muhammad K. Perwaiz accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Muhammad K. Perwaiz see?
- In 2024, CMS data shows 468 Original Medicare patients and 915 services for Muhammad K. Perwaiz. This counts Original Medicare only and measures volume, not quality.
- What is Muhammad K. Perwaiz's NPI number?
- 1902044464. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Muhammad K. Perwaiz, 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.
| Original Medicare patients | 468 |
|---|---|
| Services billed to Medicare | 915 |
| Different services or procedures | 34 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)452 services
- Critical care, first 30-74 minutes (99291)139 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)113 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)64 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)19 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%
- Ischemic heart disease68%
- Heart failure63%
- Diabetes60%
- Arthritis58%
Hospitals where Muhammad K. Perwaiz works
Medicare's Facility Affiliation Data lists Muhammad K. Perwaiz 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.
- Chsli St Joseph HospitalBethpage, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330332
- Elmhurst Hospital CenterElmhurst, NY · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 330128
- Good Samaritan Hospital Medical CenterWest Islip, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330286
Practice locations
Addresses where Muhammad K. Perwaiz is enrolled with Medicare (CMS data updated October 2, 2026).
- 317 Broadway, Suite AAmityville, NY 11701 (631) 598‑5864
- 4295 Hempstead TpkeBethpage, NY 11714 (631) 598‑5864
- 7901 BroadwayElmhurst, NY 11373 (718) 334‑4952
Group practices
Medicare enrollment lists Muhammad K. Perwaiz as a member of these groups (CMS data updated October 2, 2026).
- Icahn School of Medicine at Mount Sinai316 clinicians in the group
- Amityville Pulmonology PLLC11 clinicians in the group
Specialties
Find other Critical Care (Intensivists) doctors in New York →
Other critical care doctors in New York
Clinicians with the same Medicare primary specialty in New York — not a recommendation.
Other clinicians in Icahn School of Medicine at Mount Sinai
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2003 (23 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1902044464 |
| Corrections | Report an error or suggest an update → |
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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians