MAGDALENA FLEJSIEROWICZ MD
NPI 1144246737
Internal Medicine - Hematology & Oncology in Milwaukee, WI

Active since July 15, 2006PECOS EnrolledAccepts Medicare Assignment
1218 W KILBOURN AVE, SUITE 200, MILWAUKEE, WI 53233(414) 219-7370 Get Directions Write a Review

NPPES record last updated: October 3, 2023. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Oct 3, 2023, Dec 28, 2021 (2 updates tracked since 2021).

About Magdalena Flejsierowicz Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MAGDALENA FLEJSIEROWICZ MD (NPI 1144246737) is an individual hematology & oncology provider in Milwaukee, Wisconsin, licensed in Wisconsin (39044) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS, is affiliated with Aurora St Lukes Medical Center, and is a graduate of Other (1992).

NPPES Registry Identity

NPI1144246737
Entity TypeIndividualFemale
Primary Taxonomy207RH0003X
Provider Legal NameMAGDALENA FLEJSIEROWICZCredential: MD
Location Address1218 W KILBOURN AVE, SUITE 200Milwaukee, WI 53233-1330
Mailing Address3003 W Good Hope RdMilwaukee, WI 53209-2042 · (414) 352-3100
Sole ProprietorNo
Medical School CMSOtherGraduated 1992
Enumeration DateJuly 15, 2006
Last NPPES UpdateOctober 3, 20232 updates tracked since enumeration
NPPES CertifiedOctober 3, 2023
NPI 1144246737 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License Licensed in WI · 39044
Definition

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

1218 W KILBOURN AVE, Milwaukee, WI 53233

Other Identifiers 1

Medicaid32555100WI

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Magdalena Flejsierowicz 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.

PECOS PAC ID5092747006
PECOS Enrollment IDI20050909000606
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 2

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.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
127 services59 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
29 services27 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Aurora St Lukes Medical Center

Acute Care Hospitals · Milwaukee, WI
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520138
Location2900 W Oklahoma AveMilwaukee, WI 53215 · Milwaukee County
Emergency services Birthing friendly

West Allis Memorial Hospital

Acute Care Hospitals · West Allis, WI
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520139
Location8901 W Lincoln AveWest Allis, WI 53227 · Milwaukee County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53233 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$163.24 typical visit price
range $53.90 – $163.24
Typical copayment $40.81 (range $13.47 – $40.81)
Most-billed visit code 99205
Established Patient
$95.41 typical visit price
range $17.40 – $133.76
Typical copayment $23.85 (range $4.35 – $33.44)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
1 supplier12 claims12 services$15.00 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
1 supplier12 claims12 services$64.14 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

Internal Medicine (Gastroenterology)
1218 W KILBOURN AVE, SUITE 404
MILWAUKEE, WI 53233
Specialist
1218 W KILBOURN AVE, SUITE 301
MILWAUKEE, WI 53233
Physician Assistant
1218 W KILBOURN AVE, SUITE 511
MILWAUKEE, WI 53233
Advanced Practice Midwife
1218 W KILBOURN AVE, SUITE 200
MILWAUKEE, WI 53233
Internal Medicine
1218 W KILBOURN AVE, SUITE 403
MILWAUKEE, WI 53233
Internal Medicine
1218 W KILBOURN AVE, STE 124
MILWAUKEE, WI 53233
Physician Assistant
1218 W KILBOURN AVE, SUITE 511
MILWAUKEE, WI 53233
Orthopaedic Surgery
1218 W KILBOURN AVE, SUITE 301
MILWAUKEE, WI 53233

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 Magdalena Flejsierowicz's NPI number?

The NPI number for Magdalena Flejsierowicz is 1144246737. It was assigned to this individual provider in the NPPES registry on July 15, 2006.

Where is Magdalena Flejsierowicz located?

Magdalena Flejsierowicz practices at 1218 W Kilbourn Ave Suite 200, Milwaukee, WI 53233. The listed phone number is (414) 219-7370.

What is Magdalena Flejsierowicz's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Magdalena Flejsierowicz enrolled in Medicare?

Yes. Magdalena Flejsierowicz 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.

What insurance does Magdalena Flejsierowicz accept?

Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare), HealthPartners and Quartz and 1 other insurer list Magdalena Flejsierowicz 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 Magdalena Flejsierowicz affiliated with any hospitals?

According to CMS data, Magdalena Flejsierowicz is affiliated with Aurora St Lukes Medical Center and West Allis Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Magdalena Flejsierowicz was last updated on October 3, 2023. NPI Profile syncs with the weekly NPPES data releases published by CMS.