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Dr. Robert P. Mazurek, MD

Accepting New Patients

(756 Ratings)

Specializes in: Adult Cardiology

University of Illinois College of Medicine at Chicago

Professional interests include: echocardiogram (echo), stress testing, stress echo, and more.

2359 Hassell Road
Hoffman Estates, IL 60169

(630) 469-9200

Dr. Robert P. Mazurek, MD is a cardiologist in Hoffman Estates, IL specializing in adult cardiology. He graduated from University of Illinois College of Medicine at Chicago. Dr. Robert P. Mazurek, MD is affiliated with Ascension, Duly Health and Care, Ascension Alexian Brothers, DUPAGE MEDICAL GROUP LTD and Ascension Saint Alexius.

Office Locations

2359 Hassell Road
Hoffman Estates, IL 60169

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1325 N. Meacham Road
Schaumburg, IL 60173

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1300 N Arlington Heights Road Suite 130
Itasca, IL 60143

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Some issues Dr. Robert P. Mazurek, MD can help you with:

Heart Problems

The heart is one of the most important organs in the body. This smooth muscle expands and contracts rhythmically an entire lifetime, pumping blood to the lungs and then to every other cell in the body. When heart problems occur, it becomes difficult for the body to get the nutrients and oxygen it needs via the blood. So while there are a variety of illnesses and disorders that affect the heart, most of them cause weakness, exhaustion and shortness of breath. The most common heart conditions include heart disease, angina, arrhythmia, and valve disorders.

Heart disease is the leading cause of death in the United States for both men and women. This includes coronary artery disease, heart attacks, congestive heart failure, and congenital heart disease. Some conditions, such as genetics, cannot be controlled. But there are many other things one can do to lower their risk for heart disease. Controlling high blood pressure and cholesterol levels, reducing or stopping smoking, exercising more and losing weight if needed, and eating a diet low in sodium can all protect the heart.

Angina is a squeezing type of chest pain that happens when the muscles around the heart don't get enough oxygen. It can be regular or infrequent. Usually, angina is caused by coronary heart disease. However, not all chest pain is angina. Chest pain can also be caused by a lung infection or panic attack, for example, so it is important to have any sudden pain checked.

Arrhythmia is the word for when the heart beats too fast, too slow, or irregularly with skipped beats. It can feel frightening, and depending on the type it can be dangerous, but in most cases arrhythmia is not serious and can be treated. It is very common, especially in older adults.

Heart valve problems can happen in any one of the the heart's four valves that keep blood flowing where it needs to go. Babies can be born with problems in their heart valves, or valves can be damaged by infections. The valves can stiffen and become less mobile, or they can stop closing properly and 'leak' when the heart beats. Valve problems can usually be repaired surgically.

Noteworthy Medicare Patient Procedures Performed by Dr. Robert P. Mazurek, MD in 2023

Click on any procedure below to see further details on volume and pricing among Medicare patients.

Top 10%

By Affordability:

blood draw

blood draw for lab tests

phlebotomy for lab tests

venipuncture

In 2023, Dr. Robert P. Mazurek, MD had a list price for blood draw, blood draw for lab tests, phlebotomy for lab tests, and venipuncture (phlebotomy) that was lower than the list prices billed to Medicare by 90% of providers in related specialties within Illinois. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Top 25%

By Volume:

blood draw

blood tests

phlebotomy for lab tests

By Affordability:

prothrombin time test

In 2012, among providers in related specialties within Illinois, Dr. Robert P. Mazurek, MD performed more blood draw, blood tests, and phlebotomy for lab tests procedures for Medicare patients than 75% of them and he also had a list price for coagulation (blood clotting) tests, complete blood count (CBC), liver function tests (LFTs), metabolic panel, and prothrombin time (PT) test that was lower than the list prices billed to Medicare by 75% of them. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Robert P. Mazurek, MD treated as a cardiologist in Hoffman Estates, IL during 2012 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. Robert P. Mazurek, MD for Medicare patients.

blood draw	32
cardiac procedures	487
catheterization	18
diagnostic procedures	18
doctor visit	921
hospital care	1705
inpatient care	1683
lab tests	189
minimally invasive procedures	18
outpatient care	22
preventive care	17
stress testing	123
ultrasound (sonogram)	360
vascular procedures	18

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Robert P. Mazurek, MD treated as a cardiologist in Hoffman Estates, IL during 2013 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. Robert P. Mazurek, MD for Medicare patients.

blood draw	38
cardiac procedures	454
catheterization	23
diagnostic procedures	23
doctor visit	936
hospital care	1591
inpatient care	1554
lab tests	218
minimally invasive procedures	23
outpatient care	37
stress testing	87
ultrasound (sonogram)	357
vascular procedures	23

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert P. Mazurek, MD.

**Gender**
Male	909
Female	1160

**Ethnicity**
Non-Hispanic White	1774
Black	52
Hispanic	121
Asian	104
Other	18
Native American	0

**Age**
From 65 to 74	660
From 75 to 84	695
85 and over	518
Less than 65	196

Conditions of Medicare patients treated by Dr. Robert P. Mazurek, MD in 2013

Hypertension	75
High Cholesterol	75
Stroke	13
Ischemic Heart Disease	65
Depression	36
Chronic Kidney Disease	51
Asthma	12
Osteoperosis	14
Atrial Fibrilation	33
Heart Failure	46
Chronic Obstructive Pulmonary Disease	34
Diabetes	45
Dementia	31
Cancer	16

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Robert P. Mazurek, MD treated as a cardiologist in Hoffman Estates, IL during 2014 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. Robert P. Mazurek, MD for Medicare patients.

blood draw	50
cardiac procedures	463
catheterization	29
diagnostic procedures	29
doctor visit	977
hospital care	1482
inpatient care	1456
lab tests	206
minimally invasive procedures	29
outpatient care	26
stress testing	56
ultrasound (sonogram)	378
vascular procedures	29

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert P. Mazurek, MD.

**Gender**
Male	836
Female	1019

**Ethnicity**
Non-Hispanic White	1567
Black	72
Hispanic	105
Asian	82
Other	29
Native American	0

**Age**
From 65 to 74	627
From 75 to 84	604
85 and over	460
Less than 65	164

Conditions of Medicare patients treated by Dr. Robert P. Mazurek, MD in 2014

Hypertension	75
High Cholesterol	75
Stroke	14
Ischemic Heart Disease	64
Depression	34
Chronic Kidney Disease	49
Asthma	14
Osteoperosis	13
Atrial Fibrilation	32
Heart Failure	44
Chronic Obstructive Pulmonary Disease	34
Diabetes	46
Dementia	30
Cancer	16

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Robert P. Mazurek, MD treated as a cardiologist in Hoffman Estates, IL during 2015 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. Robert P. Mazurek, MD for Medicare patients.

blood draw	71
cardiac procedures	423
catheterization	23
diagnostic procedures	23
doctor visit	995
hospital care	1263
inpatient care	1186
lab tests	222
minimally invasive procedures	23
outpatient care	77
stress testing	73
ultrasound (sonogram)	354
vascular procedures	23

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert P. Mazurek, MD.

**Gender**
Male	1476
Female	1870

**Ethnicity**
Non-Hispanic White	2870
Black	88
Hispanic	182
Asian	152
Other	54
Native American	0

**Age**
From 65 to 74	1132
From 75 to 84	1094
85 and over	828
Less than 65	292

Conditions of Medicare patients treated by Dr. Robert P. Mazurek, MD in 2015

Hypertension	75
High Cholesterol	75
Stroke	14
Ischemic Heart Disease	62
Depression	34
Chronic Kidney Disease	49
Asthma	21
Osteoperosis	15
Atrial Fibrilation	32
Heart Failure	42
Chronic Obstructive Pulmonary Disease	31
Diabetes	46
Dementia	29
Cancer	16

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Robert P. Mazurek, MD treated as a cardiologist in Hoffman Estates, IL during 2016 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. Robert P. Mazurek, MD for Medicare patients.

blood draw	60
cardiac procedures	332
doctor visit	1063
hospital care	1112
inpatient care	1052
lab tests	255
nursing home care	40
outpatient care	60
stress testing	49
ultrasound (sonogram)	294

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert P. Mazurek, MD.

**Gender**
Male	596
Female	717

**Ethnicity**
Non-Hispanic White	1105
Black	31
Hispanic	81
Asian	69
Other	0
Native American	0

**Age**
From 65 to 74	457
From 75 to 84	424
85 and over	320
Less than 65	112

Conditions of Medicare patients treated by Dr. Robert P. Mazurek, MD in 2016

Hypertension	75
High Cholesterol	75
Stroke	12
Ischemic Heart Disease	62
Depression	32
Chronic Kidney Disease	53
Asthma	33
Osteoperosis	13
Atrial Fibrilation	34
Heart Failure	42
Chronic Obstructive Pulmonary Disease	31
Diabetes	44
Dementia	32
Cancer	16

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Robert P. Mazurek, MD treated as a cardiologist in Hoffman Estates, IL during 2017 were hospital care, inpatient care, lab tests and cardiac procedures.

Volume of procedures performed by Dr. Robert P. Mazurek, MD for Medicare patients.

blood draw	115
cardiac procedures	329
catheterization	12
diagnostic procedures	12
doctor visit	1399
hospital care	1071
inpatient care	1025
lab tests	486
minimally invasive procedures	12
nursing home care	37
outpatient care	46
preventive care	26
stress testing	22
ultrasound (sonogram)	295
vascular procedures	12

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert P. Mazurek, MD.

**Gender**
Male	593
Female	615

**Ethnicity**
Non-Hispanic White	1042
Black	23
Hispanic	57
Asian	63
Other	23
Native American	0

**Age**
From 65 to 74	448
From 75 to 84	420
85 and over	264
Less than 65	76

Conditions of Medicare patients treated by Dr. Robert P. Mazurek, MD in 2017

Hypertension	75
High Cholesterol	73
Stroke	11
Ischemic Heart Disease	62
Depression	27
Chronic Kidney Disease	53
Asthma	11
Osteoperosis	11
Atrial Fibrilation	33
Heart Failure	39
Chronic Obstructive Pulmonary Disease	26
Diabetes	42
Dementia	28
Cancer	15

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Robert P. Mazurek, MD treated as a cardiologist in Hoffman Estates, IL during 2018 were inpatient care, hospital care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. Robert P. Mazurek, MD for Medicare patients.

ambulatory monitoring	14
blood draw	128
cardiac procedures	539
cardioversion	13
catheterization	20
diagnostic procedures	20
doctor visit	1545
hospital care	1044
inpatient care	1044
lab tests	449
minimally invasive procedures	20
nursing home care	12
preventive care	39
stress testing	82
thyroid function tests	14
ultrasound (sonogram)	450
vascular procedures	20

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert P. Mazurek, MD.

**Gender**
Male	828
Female	916

**Ethnicity**
Non-Hispanic White	1440
Black	52
Hispanic	99
Asian	115
Other	0
Native American	0

**Age**
From 65 to 74	651
From 75 to 84	638
85 and over	322
Less than 65	133

Conditions of Medicare patients treated by Dr. Robert P. Mazurek, MD in 2018

Hypertension	75
High Cholesterol	75
Stroke	11
Ischemic Heart Disease	57
Depression	29
Chronic Kidney Disease	52
Asthma	9
Osteoperosis	12
Atrial Fibrilation	29
Heart Failure	36
Chronic Obstructive Pulmonary Disease	24
Diabetes	44
Dementia	29
Cancer	14

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Robert P. Mazurek, MD treated as a cardiologist in Hoffman Estates, IL during 2019 were inpatient care, hospital care, lab tests and cardiac procedures.

Volume of procedures performed by Dr. Robert P. Mazurek, MD for Medicare patients.

ambulatory monitoring	19
blood draw	138
cardiac procedures	407
catheterization	25
diagnostic procedures	25
doctor visit	1198
hospital care	992
inpatient care	992
lab tests	455
minimally invasive procedures	25
preventive care	66
stress testing	31
thyroid function tests	12
ultrasound (sonogram)	350
vascular procedures	25

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert P. Mazurek, MD.

**Gender**
Male	624
Female	665

**Ethnicity**
Non-Hispanic White	1104
Black	27
Hispanic	62
Asian	70
Other	26
Native American	0

**Age**
From 65 to 74	484
From 75 to 84	472
85 and over	265
Less than 65	68

Conditions of Medicare patients treated by Dr. Robert P. Mazurek, MD in 2019

Hypertension	75
High Cholesterol	75
Stroke	9
Ischemic Heart Disease	60
Depression	25
Chronic Kidney Disease	52
Asthma	7
Osteoperosis	10
Atrial Fibrilation	33
Heart Failure	35
Chronic Obstructive Pulmonary Disease	22
Diabetes	40
Dementia	28
Cancer	15

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Robert P. Mazurek, MD treated as a cardiologist in Hoffman Estates, IL during 2020 were inpatient care, hospital care, cardiac procedures and lab tests.

Volume of procedures performed by Dr. Robert P. Mazurek, MD for Medicare patients.

ambulatory monitoring	14
blood draw	137
cardiac procedures	420
catheterization	17
diagnostic procedures	17
doctor visit	944
hospital care	1051
inpatient care	1051
lab tests	370
minimally invasive procedures	17
preventive care	54
stress testing	47
thyroid function tests	17
ultrasound (sonogram)	359
vascular procedures	17

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert P. Mazurek, MD.

**Gender**
Male	584
Female	565

**Ethnicity**
Non-Hispanic White	983
Black	26
Hispanic	50
Asian	62
Other	28
Native American	0

**Age**
From 65 to 74	445
From 75 to 84	421
85 and over	230
Less than 65	53

Conditions of Medicare patients treated by Dr. Robert P. Mazurek, MD in 2020

Hypertension	75
High Cholesterol	75
Stroke	9
Ischemic Heart Disease	64
Depression	26
Chronic Kidney Disease	51
Asthma	6
Osteoperosis	9
Atrial Fibrilation	31
Heart Failure	36
Chronic Obstructive Pulmonary Disease	20
Diabetes	39
Dementia	29
Cancer	13

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Robert P. Mazurek, MD treated as a cardiologist in Hoffman Estates, IL during 2021 were inpatient care, hospital care, cardiac procedures and lab tests.

Volume of procedures performed by Dr. Robert P. Mazurek, MD for Medicare patients.

blood draw	128
cardiac procedures	390
catheterization	18
diagnostic procedures	18
doctor visit	970
hospital care	886
inpatient care	886
lab tests	303
minimally invasive procedures	18
preventive care	43
stress testing	82
thyroid function tests	23
ultrasound (sonogram)	302
vascular procedures	18

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert P. Mazurek, MD.

**Gender**
Male	601
Female	576

**Ethnicity**
Non-Hispanic White	997
Black	26
Hispanic	48
Asian	68
Other	38
Native American	0

**Age**
From 65 to 74	431
From 75 to 84	442
85 and over	241
Less than 65	63

Conditions of Medicare patients treated by Dr. Robert P. Mazurek, MD in 2021

Hypertension	75
High Cholesterol	75
Stroke	10
Ischemic Heart Disease	64
Depression	25
Chronic Kidney Disease	50
Asthma	7
Osteoperosis	8
Atrial Fibrilation	32
Heart Failure	36
Chronic Obstructive Pulmonary Disease	20
Diabetes	41
Dementia	28
Cancer	14

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Robert P. Mazurek, MD treated as a cardiologist in Hoffman Estates, IL during 2022 were inpatient care, hospital care, cardiac procedures and lab tests.

Volume of procedures performed by Dr. Robert P. Mazurek, MD for Medicare patients.

blood draw	170
cardiac procedures	461
catheterization	20
diagnostic procedures	20
doctor visit	1083
hospital care	688
inpatient care	688
lab tests	375
minimally invasive procedures	20
preventive care	61
stress testing	135
thyroid function tests	18
ultrasound (sonogram)	329
vascular procedures	20

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert P. Mazurek, MD.

**Gender**
Male	653
Female	609

**Ethnicity**
Non-Hispanic White	1074
Black	15
Hispanic	53
Asian	80
Other	40
Native American	0

**Age**
From 65 to 74	470
From 75 to 84	511
85 and over	238
Less than 65	43

Conditions of Medicare patients treated by Dr. Robert P. Mazurek, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	12
Ischemic Heart Disease	55
Depression	24
Chronic Kidney Disease	37
Asthma	10
Osteoperosis	14
Atrial Fibrilation	38
Heart Failure	32
Chronic Obstructive Pulmonary Disease	22
Diabetes	38
Dementia	16
Cancer	18

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Robert P. Mazurek, MD for Medicare patients.

The highest averages for the top procedures that Dr. Robert P. Mazurek, MD treated as a cardiologist in Hoffman Estates, IL were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

ambulatory monitoring	15
blood draw	97
cardiac procedures	427
cardioversion	13
catheterization	20
diagnostic procedures	20
doctor visit	1093
hospital care	1171
inpatient care	1147
lab tests	320
minimally invasive procedures	20
nursing home care	29
outpatient care	44
preventive care	43
stress testing	71
thyroid function tests	16
ultrasound (sonogram)	348
vascular procedures	20

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Robert P. Mazurek, MD.

**Gender**
Male	700
Female	792

**Ethnicity**
Black / African American	37
Asian / Pacific Islander	78
Non-Hispanic White	1268
Native American / Alaskan Native	0
Hispanic	78
Other	23

**Age**
75 to 84	520
85 and over	335
Less than 65	109
65 to 74	527

Average of Total of Conditions of Medicare patients treated by Dr. Robert P. Mazurek, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Robert P. Mazurek, MD treated were high cholesterol, hypertension, ischemic heart disease and chronic kidney disease.

Hypertension	68
High Cholesterol	68
Stroke	10
Ischemic Heart Disease	55
Depression	26
Chronic Kidney Disease	45
Asthma	11
Osteoporosis	10
Heart Failure	35
Chronic Obstructive Pulmonary Disease	24
Diabetes	38
Atrial Fibrillation	29
Dementia	25
Cancer	13

Education & Training

Dr. Robert P. Mazurek, MD graduated from University of Illinois College of Medicine at Chicago. He completed residency at McGaw Medical Center of Northwestern University. He is certified by the American Board of Internal Medicine: Cardiovascular Disease and has a state license in Illinois.

Medical School: University of Illinois College of Medicine at Chicago

Residency: McGaw Medical Center of Northwestern University

Board Certification: American Board of Internal Medicine: Cardiovascular Disease

Licensed In: Illinois

Affiliations & Hospitals

Dr. Robert P. Mazurek, MD is associated with these hospitals and organizations:

Ascension

Duly Health and Care

Ascension Alexian Brothers

DUPAGE MEDICAL GROUP LTD

Ascension Saint Alexius

Ratings & Reviews

Dr. Robert P. Mazurek, MD has an exceptional overall rating with an average of 4.9 out of 5 stars based on 756 ratings. We collect ratings and reviews of Dr. Robert P. Mazurek, MD from all over the web to help you find the right in Hoffman Estates, IL.

4.9

Overall Rating

(756 Ratings)

Leave a Review

Reviews From Around The Web

Overall Rating: 5.0 2025-07-05

Patient verified via Press Ganey

Dr. Mazurek attended to all my needs and answered all my questions. Give me time to ask questions that I had and usually with me, there are many because I'm very concerned about my health and well-being. Dr. Mazurek talks very fast, but I'm almost getting used to it because my daughter, her husband and their almost six-year-old son also talk fast.LOL Thank you so much

Overall Rating: 5.0 2025-11-20

Patient verified via Press Ganey

They got me in and short notice, and took care of everything I needed. Wish everything in life went this smoothly!

Overall Rating: 5.0 2026-02-03

Patient verified via Press Ganey

Very confident in Dr. Mazurak experience knowledge of cardiology. I feel good about decisions

Overall Rating: 5.0 2025-07-25

Patient verified via Press Ganey

Great care at this office. The staff is patient and caring. Dr. Mazurek is exceptional

Overall Rating: 5.0 2025-11-19

Patient verified via Press Ganey

Dr Mazurek helped me with my blood pressure medication and he was very helpful.

Overall Rating: 5.0 2025-11-20

Patient verified via Press Ganey

Dr Mazurek was and always is GREAT! He cares about his patients.

Overall Rating: 5.0 2025-04-04

Patient verified via Press Ganey

I was listened to & felt like a person, not a number or $ sign

Overall Rating: 5.0 2025-11-22

Patient verified via Press Ganey

Experience was great No stress, relaxed and professional.

Overall Rating: 5.0 2025-11-22

Patient verified via Press Ganey

New facility and first visit. Got to get used to it.

Overall Rating: 5.0 2025-09-30

Patient verified via Press Ganey

Doctors interest was to maintain good health.

To see all 756 reviews for Dr. Robert P. Mazurek, MD, view their full profile.

General Payments

These charts describe general payments received by Dr. Robert P. Mazurek, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Janssen Pharmaceuticals, Inc	$494 XARELTO $483	OneTouch $9	$3
AstraZeneca Pharmaceuticals LP	$416 BRILINTA $416
Boehringer Ingelheim Pharmaceuticals, Inc.	$331 Pradaxa $162	JARDIANCE $127	STIOLTO $18	$23
Novartis Pharmaceuticals Corporation	$282 ENTRESTO $228	LEQVIO $55
E.R. Squibb & Sons, L.L.C.	$270 ELIQUIS $173	CAMZYOS $35	DAKLINZA $20	BARACLUDE $18	$24
Other	$1,243 ELIQUIS $124	LifeVest $117	PRALUENT $92	WATCHMAN Access System $52	Bradycardia products $50	Other $807

**Types of Payments**
Food and Beverage	$3,020
Education	$16

Biography

Dr. Robert Mazurek sees patients in Hoffman Estates, IL, Schaumburg, IL, and Itasca, IL. His medical specialty is adult cardiology. His areas of expertise include stress echo, heart problems, and electrocardiogram (EKG). Dr. Mazurek is professionally affiliated with Advocate Sherman Hospital, Ascension, and Duly Health and Care. He attended the University of Illinois College of Medicine at Chicago for medical school and subsequently trained at Mayo Clinic and McGaw Medical Center of Northwestern University for residency. Patients rated him highly, giving him an average of 5.0 stars (out of 5). Distinctions awarded to Dr. Mazurek include: Castle Connolly; Top Doctor; and Chicago Magazine. According to Ascension, new patients are welcome to contact Dr. Mazurek's office in Hoffman Estates, IL.