DR. KONSTANTIN ZAKASHANSKY M.D.
NPI 1356557250
Obstetrics & Gynecology - Gynecologic Oncology in New York, NY
About Dr. Konstantin Zakashansky M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. KONSTANTIN ZAKASHANSKY M.D. (NPI 1356557250) is an individual gynecologic oncology provider in New York, New York, licensed in New York (231218) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS, is affiliated with Mount Sinai Hospital, and is a graduate of State University Of New York At Stony Brook, School Of Medicine (2000).
NPPES Registry Identity
Specialties & Licenses
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
Dr. Konstantin Zakashansky 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 Reassignment
Medicare enrollment records show Konstantin Zakashansky reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
New York, NY 10029
- Reassigned Medicare billing, New York enrollment
- Also billed through NPI 1922411065 (New York)
- 134 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 10
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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mount Sinai Hospital
Acute Care Hospitals · New York, NYMount Sinai St Luke's Roosevelt Hospital
Acute Care Hospitals · New York, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10029 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 10029
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 Konstantin Zakashansky's NPI number?
The NPI number for Konstantin Zakashansky is 1356557250. It was assigned to this individual provider in the NPPES registry on May 15, 2007.
Where is Konstantin Zakashansky located?
Konstantin Zakashansky practices at 1176 5th Ave Box 1173, New York, NY 10029. The listed phone number is (212) 241-5034.
What is Konstantin Zakashansky's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Gynecologic Oncology, with taxonomy code 207VX0201X.
Is Konstantin Zakashansky enrolled in Medicare?
Yes. Konstantin Zakashansky 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 organization bills Medicare for Konstantin Zakashansky's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Konstantin Zakashansky reassigns Medicare benefits to Icahn School Of Medicine At Mount Sinai (New York, NY). The 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 Konstantin Zakashansky's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Konstantin Zakashansky affiliated with any hospitals?
According to CMS data, Konstantin Zakashansky is affiliated with Mount Sinai Hospital and Mount Sinai St Luke's Roosevelt Hospital.
When was this NPI record last updated?
The NPPES record for Konstantin Zakashansky was last updated on April 28, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.