Quick answers
- Does Khawaja A. Hassan accept Medicare assignment?
- Yes. Medicare's clinician data says Khawaja A. Hassan 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 Khawaja A. Hassan see?
- In 2024, CMS data shows 1,101 Original Medicare patients and 1,575 services for Khawaja A. Hassan. This counts Original Medicare only and measures volume, not quality.
- What is Khawaja A. Hassan's NPI number?
- 1639265416. 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 Khawaja A. Hassan, 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 | 1,101 |
|---|---|
| Services billed to Medicare | 1,575 |
| Different services or procedures | 65 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet by transferring skin, 10.0 sq cm or less (14040)429 services
- Repair of wound of scalp, arms, or legs by transferring skin, 10.0 sq cm or less (14020)313 services
- Repair of wound of eyelids, nose, ears, or lips by transferring skin, 10.0 sq cm or less (14060)214 services
- Repair of wound of trunk by transferring skin, 10.0 sq cm or less (14000)106 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)99 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%
- Arthritis50%
- Ischemic heart disease41%
- Diabetes31%
- Atrial fibrillation23%
Hospitals where Khawaja A. Hassan works
Medicare's Facility Affiliation Data lists Khawaja A. Hassan 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.
- Mercy Medical CenterRockville Centre, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330259
- Plainview HospitalPlainview, NY · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 330331
Practice locations
Addresses where Khawaja A. Hassan is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.
- 1150 5th Ave, Suite 1aNew York, NY 10128 (347) 881‑3392
- 2011 Union Blvd, Suite 1Bay Shore, NY 11706 (516) 678‑4451
- 229 7th St, Suite 105Garden City, NY 11530 (212) 283‑3000
- 325 Meeting House LnSouthampton, NY 11968 (516) 678‑4451
- 755 Park Ave, Suite 500Huntington, NY 11743 (631) 271‑2769
Group practices
Medicare enrollment lists Khawaja A. Hassan as a member of these groups (CMS data updated October 2, 2026).
- Schweiger Dermatology PLLC260 clinicians in the group
- Aesthetic Dermatology, LLC5 clinicians in the group
- Markowitz Medical PLLC5 clinicians in the group
- Long Island Medical and Cosmetic Dermatology PC4 clinicians in the group
- South Shore Cosmetic Surgeons LLC2 clinicians in the group
Specialties
Find other Plastic and Reconstructive Surgery doctors in New York →
Other plastic surgeons in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Other clinicians in Schweiger Dermatology PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 1973 (53 years since medical school) |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1639265416 |
| 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