Quick answers
- Does Alexandra Alfiero accept Medicare assignment?
- Yes. Medicare's clinician data says Alexandra Alfiero 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 Alexandra Alfiero's NPI number?
- 1629650890. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Alexandra Alfiero is enrolled with Medicare (CMS data updated October 2, 2026).
- 5 E 98th St 2nd Fl, Ob/gyn Dept of Mount SinaiNew York, NY 10029 (212) 241‑2232
- 5 E 98th St-14th Flr, Ob/gyn DepartmentNew York, NY 10029 (212) 241‑2232
Group practices
Medicare enrollment lists Alexandra Alfiero as a member of this group (CMS data updated October 2, 2026).
- Icahn School of Medicine at Mount Sinai2,843 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in New York
Clinicians with the same Medicare primary specialty in New York, NY — 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 |
|---|---|
| Medical school | State University Of New York At Buffalo School Of Medicine |
| Graduation year | 2021 (5 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1629650890 |
| 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
- 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