Quick answers
- Does Gina Y. Siaw accept Medicare assignment?
- Yes. Medicare's clinician data says Gina Y. Siaw 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.
- What is Gina Y. Siaw's NPI number?
- 1184369431. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gina Y. Siaw works
Medicare's Facility Affiliation Data lists Gina Y. Siaw 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.
- Mount Sinai WestNew York, NY · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 330046
Practice locations
Addresses where Gina Y. Siaw is enrolled with Medicare (CMS data updated October 2, 2026).
- 100 Th St and Madison AveNew York, NY 10029 (212) 241‑6500
- 1000 10th AveNew York, NY 10019 (212) 241‑6426
- 1111 Amsterdam AveNew York, NY 10025 (212) 241‑6426
- 1176 5th AveNew York, NY 10029 (212) 241‑8395
Group practices
Medicare enrollment lists Gina Y. Siaw as a member of this group (CMS data updated October 2, 2026).
- Fpa Hospital Based425 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Other clinicians in Fpa Hospital Based
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| School | Hofstra North Shore - Lij School Of Medicine |
|---|---|
| Graduation year | 2022 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1184369431 |
| 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
- 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