Physician Profile
Ewa Niemierko, M.D. is a healthcare provider in Concord, MA specializing in hematology & oncology. Medicare claims data shows Ewa provided 266 services to 228 patients. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, new patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more, and new patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
131 ORNAC JOHN CUMMING BLDG #200
Concord, MA 01742
20 ONeil Blvd
Attleboro, MA 02703
Within Hematology and Oncology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Most searched conditions
Advanced Cancers
Blood & Lymph Disorders
Blood Cancers
Blood Disorders
Blood disorders
Bone & Soft Tissue Cancers
Digestive Cancers
Endocrine Cancers
Endocrine tumors
Gastrointestinal cancer
General oncology
Genetic Blood Disorders
Gynecologic cancer
Gynecologic Cancers
Head & Neck Cancers
Head and neck cancer
Neurologic Cancers
Oncologic emergencies
Ophthalmologic oncology
Skin cancer
Skin Cancers
Urologic Cancers
Most searched procedures
Biopsies & Diagnostics
Blood disorder care
Cancer Therapies
Cancer therapy
Cellular Therapies
Consultations
Diagnostic testing
Hematology Treatments
Imaging
Infusions
Interventional oncology
Supportive Cancer Care
Supportive cancer care
Surgical & Vascular Access
Testing & Genetics
Vascular access care
266 services · 228 patients · 4 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
107 | Less often than most peers in Hematology & Oncology |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
64 | More often than most peers in Hematology & Oncology |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
59 | More often than most peers in Hematology & Oncology |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
36 | Less often than most peers in Hematology & Oncology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Ewa Niemierko is a cancer specialist in Concord, MA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Hematology & Oncology”.
NPI registry
Ewa Niemierko is listed at 131 Ornac John Cumming Bldg #200, Concord, MA 01742. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (978) 287-3436. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Ewa Niemierko's National Provider Identifier is 1447233549. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Ewa Niemierko attended Other, graduating in 1981. This comes from the CMS National Downloadable File.
CMS public data
Ewa Niemierko has 45 years experience. Calculated from a graduation year of 1981, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Ewa Niemierko the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Ewa Niemierko. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.