DR. ALEXANDRA EWA ROJEK MD
NPI 1538620190
Internal Medicine - Hematology & Oncology in Chicago, IL

NPI Status: Active since March 27, 2019

Contact Information

5841 S MARYLAND AVE # MC2115
CHICAGO, IL
ZIP 60637
Phone: (773) 702-2731

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  • Individual
  • Female
  • Internal Medicine
  • Hematology & Oncology
  • PECOS Enrolled

About ALEXANDRA ROJEK

This page provides the complete NPI Profile along with additional information for Alexandra Rojek, an internist established in Chicago, Illinois with a medical specialization in Internal Medicine, focusing in hematology & oncology . The healthcare provider is registered in the NPI registry with number 1538620190 assigned on March 2019. The practitioner's primary taxonomy code is 207RH0003X with license number 036159453 (IL). The provider is registered as an individual and her NPI record was last updated July 2025.

NPI
1538620190
Provider Name
DR. ALEXANDRA EWA ROJEK MD
Gender
Female
Entity Type
Individual
Location Address
5841 S MARYLAND AVE # MC2115 CHICAGO, IL 60637
Location Phone
(773) 702-2731
Mailing Address
150 HARVESTER DR STE 300 BURR RIDGE, IL 60527
Is Sole Proprietor?
Yes
Enumeration Date
03-27-2019
Last Update Date
07-18-2025
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An internist like Alexandra Rojek is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

Location Map

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Internal Medicine Hematology & Oncology

Taxonomy Code
207RH0003X
Type
Allopathic & Osteopathic Physicians
License No.
036159453
License State
IL
Taxonomy Description
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.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
1207R00000XAllopathic & Osteopathic Physicians

Internal Medicine

036.159453 (IL)

Medicare Participation & PECOS Enrollment Status

Alexandra Rojek is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Provider Referred Orders for Durable Medical Equipment, Devices & Supplies

The following list reflects the services, supplies or durable medical equipment ordered by this provider to a DME supplier on behalf of patients. The information below is derived from Medicare claims data and reflects the BETOS category, HCPCS code information and the number times each service was submitted under the Medicare fee-for-service program.

Durable Medical Equipment

  • DME-Oxygen and Supplies (DC000N)

    Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing (HCPCS:E0431)

    1 DME suppliers used 11 Medicare Claims 11 Services Paid

  • DME-Oxygen and Supplies (DC002N)

    Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate (HCPCS:E1390)

    1 DME suppliers used 11 Medicare Claims 11 Services Paid

Physician Visit Costs

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 60637 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99205

  • Average New Patient Price $183.39
  • Minimum New Patient Price $60.08
  • Maximum New Patient Price $183.39
  • Average New Patient Copayment $45.84
  • Minimum New Patient Copayment $15.02
  • Maximum New Patient Copayment $45.84

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99214

  • Average Established Patient Price $105.7
  • Minimum Established Patient Price $18.97
  • Maximum Established Patient Price $148.12
  • Average Established Patient Copayment $26.42
  • Minimum Established Patient Copayment $4.74
  • Maximum Established Patient Copayment $37.03

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

Reviews for DR. ALEXANDRA EWA ROJEK MD

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NPI Validation Check Digit Calculation


The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.

Start with the original NPI number, the last digit is the check digit and is not used in the calculation.
1538620190
Step 1: Double the value of the alternate digits, beginning with the rightmost digit.
25681220118
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24.
2 + 5 + 6 + 8 + 1 + 2 + 2 + 0 + 1 + 1 + 8 + 24 = 60
Step 3: because the number obtained in step 2 ends in zero, the check digit is zero.
0

The NPI number 1538620190 is valid because the calculated check digit 0 using the Luhn validation algorithm matches the last digit of the original NPI number.

Other Providers at the Same Location


The following 20 providers are registered at the same or nearby location.

NPI Name / Type Taxonomy Address
1326211160DR. CARA ANN ROSENBAUM MD
Individual
Internal Medicine (Hematology & Oncology)5841 S MARYLAND AVE # MC2115
CHICAGO, IL 60637
(773) 702-0167
1306009279 SOONMO PETER KANG MD
Individual
Internal Medicine (Hematology & Oncology)5841 S MARYLAND AVE # MC2115 ROOM AB 107
CHICAGO, IL 60637
(773) 702-9699
1588093959 SARAH NIELSEN MS
Individual
Genetic Counselor, MS5841 S MARYLAND AVE # MC2115
CHICAGO, IL 60637
(773) 702-4749
1922426352 BRIAN HEISS M.D., M.A.
Individual
Internal Medicine (Hematology & Oncology)5841 S MARYLAND AVE # MC2115
CHICAGO, IL 60637
(773) 702-2614
1922327535DR. APRIL T SWOBODA MD
Individual
Internal Medicine (Medical Oncology)5841 S MARYLAND AVE # MC2115
CHICAGO, IL 60637
(773) 834-2689
1720354137DR. CHRISTINE MARIE BESTVINA M.D.
Individual
Internal Medicine (Hematology & Oncology)5841 S MARYLAND AVE # MC2115
CHICAGO, IL 60637
(773) 702-4627
1689212169MRS. JAMIE ELIZABETH MATHEWS APN
Individual
Nurse Practitioner5841 S MARYLAND AVE # MC2115
CHICAGO, IL 60637
(630) 915-0871
1285161075 KENISHA QUIANA GRANDISON NP
Individual
Nurse Practitioner (Family)5841 S MARYLAND AVE # MC2115
CHICAGO, IL 60637
(773) 834-0475
1194245514 KOOSHA PAYDARY MD
Individual
Internal Medicine (Hematology & Oncology)5841 S MARYLAND AVE # MC2115
CHICAGO, IL 60637
(773) 702-2731
1053999599 MARINA CHIARA GARASSINO MD
Individual
Internal Medicine (Hematology & Oncology)5841 S MARYLAND AVE # MC2115
CHICAGO, IL 60637
(773) 702-2984
1558893370DR. AUSTIN JAMES WESEVICH M.D.
Individual
Internal Medicine (Hematology & Oncology)5841 S MARYLAND AVE # MC2115
CHICAGO, IL 60637
(773) 702-2731
1841795929DR. GREGORY WILLIAM ROLOFF MD
Individual
Internal Medicine (Hematology & Oncology)5841 S MARYLAND AVE # MC2115
CHICAGO, IL 60637
(773) 702-2731
1003579541 GILDA GRACE RIVERA
Individual
Nurse Practitioner5841 S MARYLAND AVE # MC2115
CHICAGO, IL 60637
(773) 702-6149
1750799730 AFAF OSMAN
Individual
Internal Medicine (Hematology & Oncology)5841 S MARYLAND AVE # MC2115
CHICAGO, IL 60637
(773) 702-0878
1245734391 RAFAEL MADERO MARROQUIN MD
Individual
Internal Medicine (Hematology & Oncology)5841 S MARYLAND AVE # MC2115
CHICAGO, IL 60637
(773) 702-2731
1003234329DR. DANIEL OLSON M.D.
Individual
Internal Medicine (Hematology & Oncology)5841 S MARYLAND AVE # MC2115
CHICAGO, IL 60637
(773) 702-0878
1508153479 JAMIE RENEE BREWER M.D.
Individual
Internal Medicine (Hematology & Oncology)5841 S MARYLAND AVE # MC2115
CHICAGO, IL 60637
(773) 702-1904
1801205208DR. JONATHAN ANTHONY TRUJILLO M.D.
Individual
Internal Medicine (Hematology & Oncology)5841 S MARYLAND AVE # MC2115
CHICAGO, IL 60637
(773) 702-0878
1023721156 DAWN MARIE CONWAY AGNP-C
Individual
Nurse Practitioner (Primary Care)5841 S MARYLAND AVE # MC2115
CHICAGO, IL 60637
(773) 702-1000
1649899204 SARAH GLEN POLAND MD
Individual
Internal Medicine (Hematology & Oncology)5841 S MARYLAND AVE # MC2115
CHICAGO, IL 60637
(773) 702-2731

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1538620190, enumerated in the NPI registry as an "individual" on March 27, 2019

The provider is located at 5841 S Maryland Ave # Mc2115 Chicago, Il 60637 and the phone number is (773) 702-2731

The provider's speciality is Internal Medicine with taxonomy code 207RH0003X with a focus in Hematology & Oncology

Yes, as of June 20, 2025 the provider is registered in PECOS and is eligible to order health care services or supplies for Medicare patients. If you are a beneficiary the provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

Medicare beneficiaries should expect a typical cost of $183.39 with an average copayment of $45.84 for new patient appointments. Established patients should expect a typical charge of $105.7 and an average copayment of 26.42. Please review your insurance plan or contact the provider directly to determine your specific costs.

This NPI record was last updated on March 27, 2019. To officially update your NPI information contact the National Plan and Provider Enumeration System (NPPES) at 1-800-465-3203 (NPI Toll-Free) or by email at [email protected].
NPI Profile data is regularly updated with the latest NPI registry information, if you would like to update or remove your NPI Profile in this website please contact us.