DR. ANNA ALINA NIEWIAROWSKA M.D.
NPI 1003927559
Internal Medicine - Hematology & Oncology in Bethlehem, PA
About Dr. Anna Alina Niewiarowska M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ANNA ALINA NIEWIAROWSKA M.D. (NPI 1003927559) is an individual hematology & oncology provider in Bethlehem, Pennsylvania, licensed in Pennsylvania (MD041008L) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS, is affiliated with St Luke's Warren Hospital, and is a graduate of Other (1982).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
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. Anna Alina Niewiarowska 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 Anna Niewiarowska reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Bethlehem, PA 18015
- Reassigned Medicare billing, Pennsylvania 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 26
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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Luke's Warren Hospital
Acute Care Hospitals · Phillipsburg, NJSt Lukes Quakertown Hospital
Acute Care Hospitals · Quakertown, PASt Luke's Hospital Bethlehem
Acute Care Hospitals · Bethlehem, PASt Luke's Hospital - Easton Campus
Acute Care Hospitals · Easton, PASt Luke's Hospital - Monroe Campus
Acute Care Hospitals · Stroudsburg, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 18015 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 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BETHLEHEM, PA 18015
BETHLEHEM, PA 18015
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 Anna Niewiarowska's NPI number?
The NPI number for Anna Niewiarowska is 1003927559. It was assigned to this individual provider in the NPPES registry on August 31, 2006.
Where is Anna Niewiarowska located?
Anna Niewiarowska practices at 306 S New St Ste 201, Bethlehem, PA 18015. The listed phone number is (610) 866-0113.
What is Anna Niewiarowska's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is Anna Niewiarowska enrolled in Medicare?
Yes. Anna Niewiarowska 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 Anna Niewiarowska's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Anna Niewiarowska reassigns Medicare benefits to Vita Medical Associates, PC (Bethlehem, PA). 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 Anna Niewiarowska's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Anna Niewiarowska accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Anna Niewiarowska 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 Anna Niewiarowska affiliated with any hospitals?
According to CMS data, Anna Niewiarowska is affiliated with St Luke's Warren Hospital, St Lukes Quakertown Hospital, St Luke's Hospital Bethlehem, St Luke's Hospital - Easton Campus and St Luke's Hospital - Monroe Campus.
When was this NPI record last updated?
The NPPES record for Anna Niewiarowska was last updated on July 25, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.