Quick answers
- Which hospitals does Alexander Chasin work at?
- Medicare's official clinician data lists Alexander Chasin at 1 hospital: Long Island Jewish Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Alexander Chasin see patients?
- Medicare's clinician data lists 3 practice locations, including Astoria, NY, Mount Kisco, NY and Yonkers, NY. Call before your visit to confirm the address.
- What is Alexander Chasin's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Alexander Chasin accept Medicare assignment?
- Yes. Medicare's clinician data says Alexander Chasin accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Alexander Chasin?
- (718) 571-9192, as listed in official Medicare / NPI Registry data.
- What is Alexander Chasin's NPI number?
- 1053841239. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Alexander Chasin works
Medicare's Facility Affiliation Data lists Alexander Chasin at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Long Island Jewish Medical CenterNew Hyde Park, NY · Acute Care Hospital · CCN 330195
Practice locations
Addresses where Alexander Chasin is enrolled with Medicare (CMS data updated 2026-10-02).
- 2248 31st StAstoria, NY 11105 (718) 571‑9192
- 400 E Main StMount Kisco, NY 10549 (914) 666‑1371
- 424 S BroadwayYonkers, NY 10705 (914) 219‑0178
Group practices
Medicare enrollment lists Alexander Chasin as a member of these groups (CMS data updated 2026-10-02).
- North Shore-Lij Medical PC6,440 clinicians in the group
- City Medical of Upper East Side PLLC658 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Astoria
Clinicians with the same Medicare primary specialty in Astoria, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2017 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1053841239 |
| 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 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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