Quick answers
- Does Xenia P. Sumin accept Medicare assignment?
- Yes. Medicare's clinician data says Xenia P. Sumin 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 Xenia P. Sumin see?
- In 2024, CMS data shows 12 Original Medicare patients and 79 services for Xenia P. Sumin. This counts Original Medicare only and measures volume, not quality.
- What is Xenia P. Sumin's NPI number?
- 1477795771. 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 Xenia P. Sumin, 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 | 12 |
|---|---|
| Services billed to Medicare | 79 |
| Different services or procedures | 2 |
| Participating Medicare provider | Yes |
| Average age of these patients | 69 |
Most frequent services
- Dialysis services, 4 or more physician visits per month (20 years or older) (90960)77 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).
- Chronic kidney disease75%
Practice locations
Addresses where Xenia P. Sumin is enrolled with Medicare (CMS data updated October 2, 2026).
- 317 E 34th StNew York, NY 10016 (212) 889‑0770
- 323 E 34th StNew York, NY 10016 (212) 889‑0770
- 323 E 34th St, Fl 2New York, NY 10016
Group practices
Medicare enrollment lists Xenia P. Sumin as a member of this group (CMS data updated October 2, 2026).
- Nephrology Associates of Manhattan PC6 clinicians in the group
Specialties
- Nephrologyprimary
- Internal Medicinealso
Other nephrologists in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Other clinicians in Nephrology Associates of Manhattan PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2009 (17 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1477795771 |
| 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
- 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