Quick answers
- Where does Ellen Sierra see patients?
- Medicare's clinician data lists 10 practice locations, including East Meadow, NY, Merrick, NY and Carle Place, NY. Call before your visit to confirm the address.
- What is Ellen Sierra's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Ellen Sierra accept Medicare assignment?
- Yes. Medicare's clinician data says Ellen Sierra 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 Ellen Sierra?
- (516) 227-2273, as listed in official Medicare / NPI Registry data.
- What is Ellen Sierra's NPI number?
- 1790761732. 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 Ellen Sierra is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 10; the Medicare profile lists all.
- 1919 Hempstead TpkeEast Meadow, NY 11554 (516) 227‑2273
- 1989 Merrick RdMerrick, NY 11566 (516) 584‑4448
- 235 Glen Cove RdCarle Place, NY 11514 (516) 877‑2273
- 2459 Merrick RdBellmore, NY 11710 (516) 826‑2273
- 292 Herricks RdMineola, NY 11501 (516) 746‑2273
Group practices
Medicare enrollment lists Ellen Sierra as a member of this group (CMS data updated 2026-10-02).
- City Medical of Upper East Side PLLC658 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in East Meadow
Clinicians with the same Medicare primary specialty in East Meadow, NY — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2002 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1790761732 |
| 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 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