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Dr. John J. Hardek, MD

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(John J. Hardek, MD)

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Specializes in: Physician and Hospital Medicine (Hospitalist)

New York Medical College (1989)

Professional interests include: inpatient care

25 N Winfield Road
Winfield, IL 60190

(630) 933-4700

Dr. John J. Hardek, MD is a physician provider in Winfield, IL specializing in physician and hospital medicine (hospitalist). He graduated from New York Medical College in 1989 and has 37 years of experience. Dr. John J. Hardek, MD is affiliated with Northwestern Medicine and Northwestern Medicine Regional Medical Group.

Office Locations

25 N Winfield Road
Winfield, IL 60190

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300 Randall Road
Geneva, IL 60134

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Noteworthy Medicare Patient Procedures Performed by Dr. John J. Hardek, MD in 2024

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

Top 25%

By Volume:

inpatient hospital care

By Affordability:

hospital care

inpatient care

inpatient hospital care

In 2012, among providers in related specialties within Illinois, Dr. John J. Hardek, MD performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 75% of them and he also had a list price for hospital care, inpatient care, and inpatient hospital care (for patient admitted to hospital) 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. John J. Hardek, MD treated as a physician provider in Winfield, IL during 2012 were hospital care, inpatient care, blood draw and preventive care.

Volume of procedures performed by Dr. John J. Hardek, MD for Medicare patients.

aspiration	35
blood draw	118
doctor visit	704
hospital care	272
injections	35
inpatient care	272
preventive care	110
vaccines	110

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John J. Hardek, MD treated as a physician provider in Winfield, IL during 2013 were hospital care, inpatient care, preventive care and vaccines.

Volume of procedures performed by Dr. John J. Hardek, MD for Medicare patients.

aspiration	33
blood draw	93
doctor visit	716
ear procedures	12
hospital care	220
injections	33
inpatient care	220
preventive care	95
vaccines	95

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Hardek, MD.

**Gender**
Male	138
Female	191

**Ethnicity**
Non-Hispanic White	239
Black	0
Hispanic	51
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	116
From 75 to 84	108
85 and over	64
Less than 65	41

Conditions of Medicare patients treated by Dr. John J. Hardek, MD in 2013

Hypertension	71
High Cholesterol	55
Stroke	7
Ischemic Heart Disease	36
Depression	21
Chronic Kidney Disease	28
Asthma	5
Osteoperosis	12
Atrial Fibrilation	13
Heart Failure	24
Chronic Obstructive Pulmonary Disease	17
Diabetes	41
Dementia	18
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John J. Hardek, MD treated as a physician provider in Winfield, IL during 2014 were hospital care, inpatient care, blood draw and preventive care.

Volume of procedures performed by Dr. John J. Hardek, MD for Medicare patients.

aspiration	26
blood draw	113
doctor visit	654
hospital care	184
injections	26
inpatient care	184
preventive care	79
vaccines	79

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Hardek, MD.

**Gender**
Male	142
Female	173

**Ethnicity**
Non-Hispanic White	219
Black	0
Hispanic	54
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	111
From 75 to 84	90
85 and over	71
Less than 65	43

Conditions of Medicare patients treated by Dr. John J. Hardek, MD in 2014

Hypertension	67
High Cholesterol	53
Stroke	7
Ischemic Heart Disease	31
Depression	18
Chronic Kidney Disease	25
Asthma	6
Osteoperosis	10
Atrial Fibrilation	15
Heart Failure	23
Chronic Obstructive Pulmonary Disease	13
Diabetes	42
Dementia	17
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John J. Hardek, MD treated as a physician provider in Winfield, IL during 2015 were hospital care, inpatient care, preventive care and vaccines.

Volume of procedures performed by Dr. John J. Hardek, MD for Medicare patients.

aspiration	47
blood draw	89
doctor visit	605
hospital care	179
injections	47
inpatient care	179
preventive care	149
vaccines	149

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Hardek, MD.

**Gender**
Male	282
Female	362

**Ethnicity**
Non-Hispanic White	442
Black	0
Hispanic	104
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	242
From 75 to 84	176
85 and over	138
Less than 65	88

Conditions of Medicare patients treated by Dr. John J. Hardek, MD in 2015

Hypertension	62
High Cholesterol	49
Stroke	9
Ischemic Heart Disease	32
Depression	18
Chronic Kidney Disease	26
Asthma	9
Osteoperosis	8
Atrial Fibrilation	13
Heart Failure	21
Chronic Obstructive Pulmonary Disease	13
Diabetes	42
Dementia	16
Cancer	11

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John J. Hardek, MD treated as a physician provider in Winfield, IL during 2016 were hospital care, inpatient care, blood draw and preventive care.

Volume of procedures performed by Dr. John J. Hardek, MD for Medicare patients.

blood draw	89
doctor visit	291
hospital care	355
inpatient care	326
outpatient care	29
preventive care	33
vaccines	33

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Hardek, MD.

**Gender**
Male	154
Female	251

**Ethnicity**
Non-Hispanic White	298
Black	38
Hispanic	57
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	148
From 75 to 84	123
85 and over	81
Less than 65	53

Conditions of Medicare patients treated by Dr. John J. Hardek, MD in 2016

Hypertension	75
High Cholesterol	59
Stroke	13
Ischemic Heart Disease	42
Depression	30
Chronic Kidney Disease	41
Asthma	21
Osteoperosis	15
Atrial Fibrilation	25
Heart Failure	31
Chronic Obstructive Pulmonary Disease	19
Diabetes	43
Dementia	20
Cancer	16

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John J. Hardek, MD treated as a physician provider in Winfield, IL during 2017 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. John J. Hardek, MD for Medicare patients.

hospital care	618
inpatient care	569
outpatient care	49

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Hardek, MD.

**Gender**
Male	184
Female	213

**Ethnicity**
Non-Hispanic White	334
Black	23
Hispanic	22
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	151
From 75 to 84	112
85 and over	72
Less than 65	62

Conditions of Medicare patients treated by Dr. John J. Hardek, MD in 2017

Hypertension	75
High Cholesterol	66
Stroke	17
Ischemic Heart Disease	44
Depression	45
Chronic Kidney Disease	57
Asthma	13
Osteoperosis	14
Atrial Fibrilation	28
Heart Failure	38
Chronic Obstructive Pulmonary Disease	31
Diabetes	39
Dementia	25
Cancer	18

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John J. Hardek, MD treated as a physician provider in Winfield, IL during 2018 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. John J. Hardek, MD for Medicare patients.

hospital care	609
inpatient care	549
outpatient care	60

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Hardek, MD.

**Gender**
Male	181
Female	239

**Ethnicity**
Non-Hispanic White	341
Black	22
Hispanic	31
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	150
From 75 to 84	120
85 and over	98
Less than 65	52

Conditions of Medicare patients treated by Dr. John J. Hardek, MD in 2018

Hypertension	75
High Cholesterol	75
Stroke	21
Ischemic Heart Disease	48
Depression	44
Chronic Kidney Disease	60
Asthma	12
Osteoperosis	15
Atrial Fibrilation	27
Heart Failure	43
Chronic Obstructive Pulmonary Disease	25
Diabetes	44
Dementia	30
Cancer	16

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John J. Hardek, MD treated as a physician provider in Winfield, IL during 2019 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. John J. Hardek, MD for Medicare patients.

hospital care	537
inpatient care	440
outpatient care	97

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Hardek, MD.

**Gender**
Male	143
Female	232

**Ethnicity**
Non-Hispanic White	320
Black	0
Hispanic	17
Asian	19
Other	0
Native American	0

**Age**
From 65 to 74	131
From 75 to 84	129
85 and over	66
Less than 65	49

Conditions of Medicare patients treated by Dr. John J. Hardek, MD in 2019

Hypertension	75
High Cholesterol	75
Stroke	14
Ischemic Heart Disease	43
Depression	45
Chronic Kidney Disease	54
Asthma	13
Osteoperosis	21
Atrial Fibrilation	27
Heart Failure	39
Chronic Obstructive Pulmonary Disease	29
Diabetes	39
Dementia	29
Cancer	15

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John J. Hardek, MD treated as a physician provider in Winfield, IL during 2020 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. John J. Hardek, MD for Medicare patients.

hospital care	514
inpatient care	447
outpatient care	67

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Hardek, MD.

**Gender**
Male	152
Female	191

**Ethnicity**
Non-Hispanic White	300
Black	0
Hispanic	19
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	132
From 75 to 84	106
85 and over	67
Less than 65	38

Conditions of Medicare patients treated by Dr. John J. Hardek, MD in 2020

Hypertension	75
High Cholesterol	75
Stroke	18
Ischemic Heart Disease	46
Depression	47
Chronic Kidney Disease	61
Asthma	11
Osteoperosis	17
Atrial Fibrilation	29
Heart Failure	40
Chronic Obstructive Pulmonary Disease	27
Diabetes	38
Dementia	27
Cancer	17

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John J. Hardek, MD treated as a physician provider in Winfield, IL during 2021 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. John J. Hardek, MD for Medicare patients.

hospital care	487
inpatient care	418
outpatient care	69

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Hardek, MD.

**Gender**
Male	159
Female	165

**Ethnicity**
Non-Hispanic White	271
Black	12
Hispanic	21
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	103
From 75 to 84	119
85 and over	71
Less than 65	31

Conditions of Medicare patients treated by Dr. John J. Hardek, MD in 2021

Hypertension	75
High Cholesterol	75
Stroke	19
Ischemic Heart Disease	48
Depression	45
Chronic Kidney Disease	64
Asthma	12
Osteoperosis	15
Atrial Fibrilation	24
Heart Failure	43
Chronic Obstructive Pulmonary Disease	25
Diabetes	43
Dementia	31
Cancer	22

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John J. Hardek, MD treated as a physician provider in Winfield, IL during 2022 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. John J. Hardek, MD for Medicare patients.

hospital care	554
inpatient care	513
outpatient care	41

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Hardek, MD.

**Gender**
Male	132
Female	192

**Ethnicity**
Non-Hispanic White	274
Black	14
Hispanic	15
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	108
From 75 to 84	120
85 and over	75
Less than 65	21

Conditions of Medicare patients treated by Dr. John J. Hardek, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	21
Ischemic Heart Disease	48
Depression	42
Chronic Kidney Disease	48
Asthma	14
Osteoperosis	20
Atrial Fibrilation	35
Heart Failure	45
Chronic Obstructive Pulmonary Disease	32
Diabetes	43
Dementia	25
Cancer	29

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. John J. Hardek, MD treated as a physician provider in Winfield, IL during 2023 were hospital care and inpatient care.

Volume of procedures performed by Dr. John J. Hardek, MD for Medicare patients.

hospital care	490
inpatient care	490

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Hardek, MD.

**Gender**
Male	138
Female	199

**Ethnicity**
Non-Hispanic White	287
Black	11
Hispanic	16
Asian	12
Other	0
Native American	0

**Age**
From 65 to 74	121
From 75 to 84	117
85 and over	73
Less than 65	26

Conditions of Medicare patients treated by Dr. John J. Hardek, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	26
Ischemic Heart Disease	47
Depression	46
Chronic Kidney Disease	42
Asthma	15
Osteoperosis	26
Atrial Fibrilation	38
Heart Failure	42
Chronic Obstructive Pulmonary Disease	28
Diabetes	42
Dementia	24
Cancer	29

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. John J. Hardek, MD treated as a physician provider in Winfield, IL during 2024 were hospital care and inpatient care.

Volume of procedures performed by Dr. John J. Hardek, MD for Medicare patients.

hospital care	490
inpatient care	490

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Hardek, MD.

**Gender**
Male	155
Female	145

**Ethnicity**
Non-Hispanic White	256
Black	0
Hispanic	19
Asian	12
Other	0
Native American	0

**Age**
From 65 to 74	95
From 75 to 84	103
85 and over	82
Less than 65	20

Conditions of Medicare patients treated by Dr. John J. Hardek, MD in 2024

Hypertension	75
High Cholesterol	75
Stroke	21
Ischemic Heart Disease	50
Depression	39
Chronic Kidney Disease	43
Asthma	12
Osteoperosis	23
Atrial Fibrilation	36
Heart Failure	40
Chronic Obstructive Pulmonary Disease	32
Diabetes	43
Dementia	29
Cancer	22

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. John J. Hardek, MD for Medicare patients.

The highest averages for the top procedures that Dr. John J. Hardek, MD treated as a physician provider in Winfield, IL were hospital care, inpatient care, blood draw and preventive care.

aspiration	35
blood draw	100
doctor visit	594
ear procedures	12
hospital care	423
injections	35
inpatient care	392
outpatient care	58
preventive care	93
vaccines	93

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. John J. Hardek, MD.

**Gender**
Female	196
Male	150

**Ethnicity**
Black / African American	9
Asian / Pacific Islander	3
Non-Hispanic White	275
Native American / Alaskan Native	0
Hispanic	32
Other	0

**Age**
85 and over	73
75 to 84	109
Less than 65	40
65 to 74	123

Average of Total of Conditions of Medicare patients treated by Dr. John J. Hardek, MD From 2012 - 2024

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

Hypertension	67
High Cholesterol	62
Stroke	14
Ischemic Heart Disease	39
Depression	33
Chronic Kidney Disease	42
Asthma	11
Osteoporosis	15
Heart Failure	33
Chronic Obstructive Pulmonary Disease	22
Diabetes	38
Atrial Fibrillation	23
Cancer	16
Dementia	22

Education & Training

Dr. John J. Hardek, MD graduated from New York Medical College in 1989. He completed residency at MacNeal Hospital. He is certified by the American Board of Internal Medicine - Internal Medicine (Certified) and has a state license in Illinois.

Medical School: New York Medical College (1989)

Residency: MacNeal Hospital (1992)

Board Certification: American Board of Internal Medicine - Internal Medicine (Certified)

Licensed In: Illinois

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General Payments

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

**Payments by Company**
AstraZeneca Pharmaceuticals LP	$1,060 CRESTOR $300	FARXIGA $197	SYMBICORT $166	BYDUREON PEN $101	ONGLYZA $90	Other $206
Novo Nordisk Inc	$781 Victoza $273	NovoLog $155	Tresiba $150	Levemir $34	$168
Boehringer Ingelheim Pharmaceuticals, Inc.	$614 JARDIANCE $136	Pradaxa $130	Spiriva $96	SPIRIVA RESPIMAT $71	STIOLTO $65	Other $116
Baxter Healthcare	$450 Non-Franchise (NOF) - NonProduct $450
Takeda Pharmaceuticals America, Inc.	$431 Brintellix $226	Contrave $60	Colcrys $52	Trintellix $35	Kazano $28	Other $28
Other	$3,605 ELIQUIS $293	V-GO $231	EXELON PATCH $160	Benicar $157	Vesicare $147	Other $2,616

**Types of Payments**
Food and Beverage	$6,298
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$450
Education	$193

Biography

Dr. John Hardek specializes in physician and hospital medicine (hospitalist). Dr. Hardek's areas of expertise include inpatient care. His hospital/clinic affiliations include Northwestern Medicine Central DuPage Hospital and Delnor Hospital. He has an open panel in Winfield, IL according to Yext. He attended New York Medical College and then went on to complete his residency at MacNeal Hospital. He speaks Spanish.