DR. REBECCA ANNE MAZURKIEWICZ M.D., M.P.H.
NPI 1427217678
Internal Medicine in New York, NY
About Dr. Rebecca Anne Mazurkiewicz M.d., M.p.h. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. REBECCA ANNE MAZURKIEWICZ M.D., M.P.H. (NPI 1427217678) is an individual internal medicine provider in New York, New York, licensed in New York (250118) and active in the NPI registry since June 2008. She is enrolled in Medicare PECOS, is affiliated with North Shore Medical Center -, and is a graduate of Icahn School Of Medicine At Mount Sinai (2012).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
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. Rebecca Anne Mazurkiewicz M.d., M.p.h. 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
4Medicare enrollment records show Rebecca Mazurkiewicz reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10011
- Reassigned Medicare billing, New York enrollment
- 105 clinicians in this Medicare group
New York, NY 10128
- Reassigned Medicare billing, New York enrollment
- 724 clinicians in this Medicare group
New Hyde Park, NY 11040
- Reassigned Medicare billing, New York enrollment
- 9,353 clinicians in this Medicare group
Salem, MA 01970
- Reassigned Medicare billing, Massachusetts enrollment
- 994 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 4
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.
North Shore Medical Center -
Acute Care Hospitals · Salem, MAMassachusetts General Hospital
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10011 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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 10011
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 Rebecca Mazurkiewicz's NPI number?
The NPI number for Rebecca Mazurkiewicz is 1427217678. It was assigned to this individual provider in the NPPES registry on June 3, 2008.
Where is Rebecca Mazurkiewicz located?
Rebecca Mazurkiewicz practices at 356 W 18th St, New York, NY 10011. The listed phone number is (212) 271-7200.
What is Rebecca Mazurkiewicz's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Rebecca Mazurkiewicz enrolled in Medicare?
Yes. Rebecca Mazurkiewicz 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 Rebecca Mazurkiewicz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Rebecca Mazurkiewicz reassigns Medicare benefits to 4 organizations: Community Health Project Inc. (New York, NY), Advantagecare Physicians PC (New York, NY), North Shore - Lij Medical PC (New Hyde Park, NY) and Mass General Brigham Medical Group Northern Massachusetts Inc (Salem, MA). 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 Rebecca Mazurkiewicz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Rebecca Mazurkiewicz accept?
Health plans from Anthem Blue Cross and Blue Shield list Rebecca Mazurkiewicz as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Rebecca Mazurkiewicz affiliated with any hospitals?
According to CMS data, Rebecca Mazurkiewicz is affiliated with North Shore Medical Center - and Massachusetts General Hospital.
When was this NPI record last updated?
The NPPES record for Rebecca Mazurkiewicz was last updated on March 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Dr. Rebecca Anne Mazurkiewicz, M.D., M.P.H. · NPI 1427217678
Internal Medicine physician in New York, New York. Individual provider, active in the CMS NPPES registry since June 3, 2008.
## Identity
- **NPI:** 1427217678 (Entity type: Individual)
- **Enumerated:** June 3, 2008
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 250118 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 356 W 18TH ST, New York, NY 10011-4401
- **Phone:** (212) 271-7200 · **Fax:** (212) 271-7225
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Community Health Project Inc. (NPI 1306898432, New York, NY); Advantagecare Physicians PC (NPI 1336578772, New York, NY); North Shore - Lij Medical PC (NPI 1790043479, New Hyde Park, NY); Mass General Brigham Medical Group Northern Massachusetts Inc (NPI 1588606123, Salem, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Icahn School Of Medicine At Mount Sinai, class of 2012
## Record status
- **NPPES last updated:** March 10, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1427217678) · Data from the CMS NPPES public registry.