ISABELLA MARTYNA CHOJNACKI MD
NPI 1013653153
Internal Medicine in White Plains, NY
About Isabella Martyna Chojnacki Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ISABELLA MARTYNA CHOJNACKI MD (NPI 1013653153) is an individual internal medicine provider in White Plains, New York, licensed in New York (340670) and active in the NPI registry since May 2022. She is enrolled in Medicare PECOS, is affiliated with White Plains Hospital Center, and is a graduate of Other (2021).
NPPES Registry Identity
Specialties & Licenses
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
Isabella Martyna Chojnacki Md 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 Isabella Chojnacki reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
White Plains, NY 10601
- Reassigned Medicare billing, New York enrollment
- 479 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
White Plains Hospital Center
Acute Care Hospitals · White Plains, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10601 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.
WHITE PLAINS, NY 10601
WHITE PLAINS, NY 10601
WHITE PLAINS, NY 10601
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 Isabella Chojnacki's NPI number?
The NPI number for Isabella Chojnacki is 1013653153. It was assigned to this individual provider in the NPPES registry on May 11, 2022.
Where is Isabella Chojnacki located?
Isabella Chojnacki practices at 41 E Post Rd, White Plains, NY 10601. The listed phone number is (914) 681-0600.
What is Isabella Chojnacki's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Isabella Chojnacki enrolled in Medicare?
Yes. Isabella Chojnacki 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 Isabella Chojnacki's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Isabella Chojnacki reassigns Medicare benefits to East Post Road Medical Services PC (White Plains, 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 Isabella Chojnacki's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Isabella Chojnacki affiliated with any hospitals?
According to CMS data, Isabella Chojnacki is affiliated with White Plains Hospital Center.
When was this NPI record last updated?
The NPPES record for Isabella Chojnacki was last updated on January 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months 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.
# Isabella Martyna Chojnacki, MD · NPI 1013653153
Internal Medicine physician in White Plains, New York. Individual provider, active in the CMS NPPES registry since May 11, 2022.
## Identity
- **NPI:** 1013653153 (Entity type: Individual)
- **Enumerated:** May 11, 2022
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 340670 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 41 E POST RD, White Plains, NY 10601-4699
- **Phone:** (914) 681-0600
## 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:** East Post Road Medical Services PC (NPI 1841767274, White Plains, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2021
## Record status
- **NPPES last updated:** January 12, 2026
---
Source: [NPI Profile](https://npiprofile.com/npi/1013653153) · Data from the CMS NPPES public registry.