XENIA P SUMIN M.D.
NPI 1477795771
Internal Medicine - Nephrology in New York, NY
About Xenia P Sumin M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
XENIA P SUMIN M.D. (NPI 1477795771) is an individual nephrology provider in New York, New York, licensed in New York (2684247) and active in the NPI registry since April 2009. She is enrolled in Medicare PECOS and is a graduate of Other (2009).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Xenia P Sumin M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Xenia Sumin reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10044
- Reassigned Medicare billing, New York enrollment
- 1,615 clinicians in this Medicare group
New York, NY 10016
- Reassigned Medicare billing, New York enrollment
- 6 clinicians in this Medicare group
New York, NY 10016
- Reassigned Medicare billing, New York enrollment
- 7 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10075 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW YORK, NY 10075
NEW YORK, NY 10075
NEW YORK, NY 10075
NEW YORK, NY 10075
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Xenia Sumin's NPI number?
The NPI number for Xenia Sumin is 1477795771. It was assigned to this individual provider in the NPPES registry on April 1, 2009. The provider is also known as Xenia P Sumin M.D..
Where is Xenia Sumin located?
Xenia Sumin practices at 100 E 77th St, New York, NY 10075. The listed phone number is (212) 434-2000.
What is Xenia Sumin's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is Xenia Sumin enrolled in Medicare?
Yes. Xenia Sumin is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Xenia Sumin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Xenia Sumin reassigns Medicare benefits to 3 organizations: New York City Health And Hospitals Corporation (New York, NY), Nephrology Associates Of Manhattan PC (New York, NY) and Robert Matalon MD PC (New York, NY). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Xenia Sumin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Xenia Sumin was last updated on May 11, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Xenia P Sumin, M.D. · NPI 1477795771
Nephrology physician in New York, New York. Individual provider, active in the CMS NPPES registry since April 1, 2009.
## Identity
- **NPI:** 1477795771 (Entity type: Individual)
- **Enumerated:** April 1, 2009
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **State license:** 2684247 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 100 E 77TH ST, New York, NY 10075-1850
- **Phone:** (212) 434-2000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): New York City Health And Hospitals Corporation (NPI 1679581607, New York, NY); Nephrology Associates Of Manhattan PC (NPI 1811978984, New York, NY); Robert Matalon MD PC (NPI 1477568343, New York, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2009
## Record status
- **NPPES last updated:** May 11, 2016
- **Other identifiers:** Other A400113591; Medicaid 04076413 (NY)
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Source: [NPI Profile](https://npiprofile.com/npi/1477795771) · Data from the CMS NPPES public registry.