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Home > IL Providers > Interventional Cardiologists

Dr. John Michael Cahill, MD

(2 Ratings)

Specializes in: Interventional Cardiology and Adult Cardiology

133 E Brush Hill Road Suite 202
Elmhurst, IL 60126

(331) 231-6200

Dr. John Michael Cahill, MD is an interventional cardiologist in Elmhurst, IL specializing in interventional cardiology and adult cardiology.

Office Locations

133 E Brush Hill Road Suite 202
Elmhurst, IL 60126

(331) 231-6200

(331) 231-6201

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Noteworthy Medicare Patient Procedures Performed by Dr. John Michael Cahill, MD in 2023

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

Top 5%

By Volume:

stress EKG

In 2023, Dr. John Michael Cahill, MD performed more stress EKG procedures for Medicare patients than 95% of providers in related specialties within Illinois.

Top 10%

By Volume:

cardiac stress testing

By Affordability:

cardiac catheterization

catheterization

diagnostic procedures

left heart catheterization

In 2023, among providers in related specialties within Illinois, Dr. John Michael Cahill, MD performed more cardiac (heart) stress testing procedures for Medicare patients than 90% of them and he also had a list price for cardiac catheterization, catheterization, diagnostic procedures, and left heart catheterization that was lower than the list prices billed to Medicare by 90% 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.

Top 25%

By Volume:

cardiac procedures

Doppler echocardiography

echocardiogram

inpatient hospital care

By Affordability:

angiogram

cardiac procedures

coronary angiogram

diagnostic cardiac catheterization

In 2012, among providers in related specialties within Illinois, Dr. John Michael Cahill, MD performed more cardiac procedures, Doppler echocardiography, echocardiogram (echo), and inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 75% of them and he also had a list price for angiogram (angiography), cardiac procedures, coronary angiogram, and diagnostic cardiac catheterization 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 Michael Cahill, MD treated as an interventional cardiologist in Elmhurst, IL during 2012 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Michael Cahill, MD for Medicare patients.

cardiac procedures	702
cardioversion	16
catheterization	142
diagnostic procedures	98
doctor visit	1253
hospital care	1663
inpatient care	1663
minimally invasive procedures	171
nursing home care	159
stent placement (stenting)	44
stress testing	146
ultrasound (sonogram)	480
vascular procedures	98

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John Michael Cahill, MD treated as an interventional cardiologist in Elmhurst, IL during 2013 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Michael Cahill, MD for Medicare patients.

angioplasty	64
cardiac procedures	734
catheterization	187
diagnostic procedures	91
doctor visit	1364
hospital care	1960
inpatient care	1960
minimally invasive procedures	214
nursing home care	164
stent placement (stenting)	64
stress testing	125
ultrasound (sonogram)	475
vascular procedures	91

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John Michael Cahill, MD.

**Gender**
Male	1056
Female	1185

**Ethnicity**
Non-Hispanic White	1967
Black	99
Hispanic	114
Asian	46
Other	15
Native American	0

**Age**
From 65 to 74	672
From 75 to 84	768
85 and over	658
Less than 65	143

Conditions of Medicare patients treated by Dr. John Michael Cahill, MD in 2013

Hypertension	75
High Cholesterol	75
Stroke	13
Ischemic Heart Disease	68
Depression	26
Chronic Kidney Disease	38
Asthma	10
Osteoperosis	14
Atrial Fibrilation	32
Heart Failure	44
Chronic Obstructive Pulmonary Disease	30
Diabetes	40
Dementia	19
Cancer	15

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John Michael Cahill, MD treated as an interventional cardiologist in Elmhurst, IL during 2014 were inpatient care, hospital care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Michael Cahill, MD for Medicare patients.

angioplasty	54
cardiac procedures	631
cardioversion	13
catheterization	197
diagnostic procedures	116
doctor visit	1287
hospital care	1682
inpatient care	1682
minimally invasive procedures	216
nursing home care	162
stent placement (stenting)	54
stress testing	71
ultrasound (sonogram)	389
vascular procedures	116

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John Michael Cahill, MD.

**Gender**
Male	1018
Female	1088

**Ethnicity**
Non-Hispanic White	1801
Black	129
Hispanic	103
Asian	48
Other	0
Native American	0

**Age**
From 65 to 74	627
From 75 to 84	727
85 and over	617
Less than 65	135

Conditions of Medicare patients treated by Dr. John Michael Cahill, MD in 2014

Hypertension	75
High Cholesterol	75
Stroke	12
Ischemic Heart Disease	70
Depression	24
Chronic Kidney Disease	41
Asthma	10
Osteoperosis	14
Atrial Fibrilation	35
Heart Failure	45
Chronic Obstructive Pulmonary Disease	29
Diabetes	38
Dementia	21
Cancer	14

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John Michael Cahill, MD treated as an interventional cardiologist in Elmhurst, IL during 2015 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Michael Cahill, MD for Medicare patients.

angioplasty	52
cardiac procedures	590
catheterization	178
diagnostic procedures	100
doctor visit	1242
hospital care	1452
inpatient care	1452
minimally invasive procedures	201
nursing home care	179
stent placement (stenting)	52
stress testing	91
ultrasound (sonogram)	350
vascular procedures	100

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John Michael Cahill, MD.

**Gender**
Male	1766
Female	1770

**Ethnicity**
Non-Hispanic White	3104
Black	170
Hispanic	138
Asian	78
Other	46
Native American	0

**Age**
From 65 to 74	1118
From 75 to 84	1212
85 and over	996
Less than 65	210

Conditions of Medicare patients treated by Dr. John Michael Cahill, MD in 2015

Hypertension	75
High Cholesterol	75
Stroke	13
Ischemic Heart Disease	71
Depression	24
Chronic Kidney Disease	41
Asthma	18
Osteoperosis	14
Atrial Fibrilation	36
Heart Failure	44
Chronic Obstructive Pulmonary Disease	28
Diabetes	38
Dementia	18
Cancer	16

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John Michael Cahill, MD treated as an interventional cardiologist in Elmhurst, IL during 2016 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Michael Cahill, MD for Medicare patients.

angioplasty	26
cardiac procedures	530
catheterization	111
diagnostic procedures	72
doctor visit	1179
hospital care	1153
inpatient care	1153
minimally invasive procedures	134
nursing home care	170
stent placement (stenting)	26
stress testing	84
ultrasound (sonogram)	357
vascular procedures	72

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John Michael Cahill, MD.

**Gender**
Male	871
Female	874

**Ethnicity**
Non-Hispanic White	1505
Black	76
Hispanic	82
Asian	48
Other	0
Native American	0

**Age**
From 65 to 74	547
From 75 to 84	603
85 and over	494
Less than 65	101

Conditions of Medicare patients treated by Dr. John Michael Cahill, MD in 2016

Hypertension	75
High Cholesterol	73
Stroke	11
Ischemic Heart Disease	73
Depression	23
Chronic Kidney Disease	44
Asthma	28
Osteoperosis	11
Atrial Fibrilation	35
Heart Failure	46
Chronic Obstructive Pulmonary Disease	27
Diabetes	38
Dementia	20
Cancer	16

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John Michael Cahill, MD treated as an interventional cardiologist in Elmhurst, IL during 2017 were inpatient care, hospital care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Michael Cahill, MD for Medicare patients.

ambulatory monitoring	27
angioplasty	52
cardiac procedures	644
catheterization	164
diagnostic procedures	86
doctor visit	1154
hospital care	894
inpatient care	894
minimally invasive procedures	189
nursing home care	104
stent placement (stenting)	52
stress testing	116
ultrasound (sonogram)	367
vascular procedures	86

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John Michael Cahill, MD.

**Gender**
Male	845
Female	833

**Ethnicity**
Non-Hispanic White	1422
Black	103
Hispanic	69
Asian	47
Other	37
Native American	0

**Age**
From 65 to 74	545
From 75 to 84	623
85 and over	422
Less than 65	88

Conditions of Medicare patients treated by Dr. John Michael Cahill, MD in 2017

Hypertension	75
High Cholesterol	60
Stroke	11
Ischemic Heart Disease	73
Depression	23
Chronic Kidney Disease	47
Asthma	9
Osteoperosis	11
Atrial Fibrilation	33
Heart Failure	45
Chronic Obstructive Pulmonary Disease	26
Diabetes	40
Dementia	19
Cancer	15

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John Michael Cahill, MD treated as an interventional cardiologist in Elmhurst, IL during 2018 were inpatient care, hospital care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Michael Cahill, MD for Medicare patients.

ambulatory monitoring	66
angioplasty	54
cardiac procedures	558
catheterization	130
diagnostic procedures	49
doctor visit	1045
hospital care	772
inpatient care	772
minimally invasive procedures	151
nursing home care	72
stent placement (stenting)	54
stress testing	78
ultrasound (sonogram)	303
vascular procedures	49

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John Michael Cahill, MD.

**Gender**
Male	766
Female	748

**Ethnicity**
Non-Hispanic White	1255
Black	85
Hispanic	98
Asian	43
Other	33
Native American	0

**Age**
From 65 to 74	476
From 75 to 84	561
85 and over	386
Less than 65	91

Conditions of Medicare patients treated by Dr. John Michael Cahill, MD in 2018

Hypertension	75
High Cholesterol	75
Stroke	9
Ischemic Heart Disease	73
Depression	25
Chronic Kidney Disease	49
Asthma	9
Osteoperosis	11
Atrial Fibrilation	31
Heart Failure	46
Chronic Obstructive Pulmonary Disease	29
Diabetes	39
Dementia	20
Cancer	14

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John Michael Cahill, MD treated as an interventional cardiologist in Elmhurst, IL during 2019 were cardiac procedures, inpatient care, hospital care and ultrasound (sonogram).

Volume of procedures performed by Dr. John Michael Cahill, MD for Medicare patients.

ambulatory monitoring	48
angioplasty	32
cardiac procedures	635
catheterization	97
diagnostic procedures	49
doctor visit	942
hospital care	573
inpatient care	573
minimally invasive procedures	112
nuclear scan	45
nursing home care	25
stent placement (stenting)	32
stress testing	190
ultrasound (sonogram)	336
vascular procedures	49

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John Michael Cahill, MD.

**Gender**
Male	747
Female	657

**Ethnicity**
Non-Hispanic White	1202
Black	63
Hispanic	65
Asian	37
Other	37
Native American	0

**Age**
From 65 to 74	461
From 75 to 84	546
85 and over	331
Less than 65	66

Conditions of Medicare patients treated by Dr. John Michael Cahill, MD in 2019

Hypertension	75
High Cholesterol	75
Stroke	10
Ischemic Heart Disease	72
Depression	23
Chronic Kidney Disease	49
Asthma	8
Osteoperosis	10
Atrial Fibrilation	31
Heart Failure	44
Chronic Obstructive Pulmonary Disease	24
Diabetes	37
Dementia	15
Cancer	17

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John Michael Cahill, MD treated as an interventional cardiologist in Elmhurst, IL during 2020 were cardiac procedures, inpatient care, hospital care and ultrasound (sonogram).

Volume of procedures performed by Dr. John Michael Cahill, MD for Medicare patients.

ambulatory monitoring	61
angioplasty	60
cardiac procedures	827
catheterization	155
diagnostic procedures	65
doctor visit	859
hospital care	666
inpatient care	666
minimally invasive procedures	155
nuclear scan	70
nursing home care	17
stent placement (stenting)	60
stress testing	285
ultrasound (sonogram)	396
vascular procedures	82

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John Michael Cahill, MD.

**Gender**
Male	786
Female	712

**Ethnicity**
Non-Hispanic White	1250
Black	93
Hispanic	86
Asian	31
Other	38
Native American	0

**Age**
From 65 to 74	465
From 75 to 84	576
85 and over	367
Less than 65	90

Conditions of Medicare patients treated by Dr. John Michael Cahill, MD in 2020

Hypertension	75
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	73
Depression	22
Chronic Kidney Disease	53
Asthma	7
Osteoperosis	10
Atrial Fibrilation	30
Heart Failure	45
Chronic Obstructive Pulmonary Disease	24
Diabetes	40
Dementia	18
Cancer	15

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John Michael Cahill, MD treated as an interventional cardiologist in Elmhurst, IL during 2021 were inpatient care, hospital care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Michael Cahill, MD for Medicare patients.

ambulatory monitoring	20
angioplasty	36
cardiac procedures	694
catheterization	132
diagnostic procedures	78
doctor visit	1036
hospital care	779
inpatient care	779
minimally invasive procedures	132
nuclear scan	42
stent placement (stenting)	36
stress testing	215
ultrasound (sonogram)	370
vascular procedures	78

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John Michael Cahill, MD.

**Gender**
Male	794
Female	777

**Ethnicity**
Non-Hispanic White	1310
Black	89
Hispanic	88
Asian	42
Other	42
Native American	0

**Age**
From 65 to 74	527
From 75 to 84	605
85 and over	375
Less than 65	64

Conditions of Medicare patients treated by Dr. John Michael Cahill, MD in 2021

Hypertension	75
High Cholesterol	75
Stroke	10
Ischemic Heart Disease	72
Depression	24
Chronic Kidney Disease	52
Asthma	8
Osteoperosis	11
Atrial Fibrilation	31
Heart Failure	42
Chronic Obstructive Pulmonary Disease	24
Diabetes	40
Dementia	18
Cancer	16

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John Michael Cahill, MD treated as an interventional cardiologist in Elmhurst, IL during 2022 were cardiac procedures, hospital care, inpatient care and ultrasound (sonogram).

Volume of procedures performed by Dr. John Michael Cahill, MD for Medicare patients.

cardiac procedures	788
catheterization	65
diagnostic procedures	65
doctor visit	1481
hospital care	666
inpatient care	666
minimally invasive procedures	65
stress testing	378
ultrasound (sonogram)	394
vascular procedures	65

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John Michael Cahill, MD.

**Gender**
Male	848
Female	751

**Ethnicity**
Non-Hispanic White	1344
Black	91
Hispanic	91
Asian	0
Other	42
Native American	0

**Age**
From 65 to 74	548
From 75 to 84	625
85 and over	359
Less than 65	67

Conditions of Medicare patients treated by Dr. John Michael Cahill, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	14
Ischemic Heart Disease	64
Depression	21
Chronic Kidney Disease	39
Asthma	10
Osteoperosis	13
Atrial Fibrilation	37
Heart Failure	39
Chronic Obstructive Pulmonary Disease	26
Diabetes	39
Dementia	13
Cancer	20

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. John Michael Cahill, MD treated as an interventional cardiologist in Elmhurst, IL during 2023 were cardiac procedures, hospital care, inpatient care and ultrasound (sonogram).

Volume of procedures performed by Dr. John Michael Cahill, MD for Medicare patients.

cardiac procedures	740
catheterization	12
diagnostic procedures	12
doctor visit	1538
hospital care	725
inpatient care	725
minimally invasive procedures	12
nuclear scan	24
stress testing	364
ultrasound (sonogram)	410
vascular procedures	12

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. John Michael Cahill, MD.

**Gender**
Male	784
Female	679

**Ethnicity**
Non-Hispanic White	1227
Black	65
Hispanic	89
Asian	37
Other	45
Native American	0

**Age**
From 65 to 74	506
From 75 to 84	579
85 and over	331
Less than 65	47

Conditions of Medicare patients treated by Dr. John Michael Cahill, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	14
Ischemic Heart Disease	67
Depression	19
Chronic Kidney Disease	40
Asthma	10
Osteoperosis	14
Atrial Fibrilation	40
Heart Failure	39
Chronic Obstructive Pulmonary Disease	25
Diabetes	38
Dementia	11
Cancer	20

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. John Michael Cahill, MD for Medicare patients.

The highest averages for the top procedures that Dr. John Michael Cahill, MD treated as an interventional cardiologist in Elmhurst, IL were inpatient care, hospital care, cardiac procedures and ultrasound (sonogram).

ambulatory monitoring	44
angioplasty	47
cardiac procedures	672
cardioversion	14
catheterization	130
diagnostic procedures	73
doctor visit	1198
hospital care	1082
inpatient care	1082
minimally invasive procedures	146
nuclear scan	45
nursing home care	116
stent placement (stenting)	47
stress testing	178
ultrasound (sonogram)	385
vascular procedures	74

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. John Michael Cahill, MD.

**Gender**
Female	839
Male	856

**Ethnicity**
Black / African American	88
Asian / Pacific Islander	38
Non-Hispanic White	1448
Hispanic	85
Native American / Alaskan Native	0
Other	27

**Age**
85 and over	444
75 to 84	618
Less than 65	91
65 to 74	541

Average of Total of Conditions of Medicare patients treated by Dr. John Michael Cahill, MD From 2012 - 2023

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

Hypertension	68
High Cholesterol	67
Stroke	10
Ischemic Heart Disease	64
Depression	21
Chronic Kidney Disease	41
Asthma	10
Osteoporosis	11
Heart Failure	39
Chronic Obstructive Pulmonary Disease	24
Diabetes	35
Atrial Fibrillation	30
Dementia	16
Cancer	14

Education & Training

He has a state license in Illinois.

Licensed In: Illinois

Ratings & Reviews

Dr. John Michael Cahill, MD has an exceptional overall rating with an average of 4.5 out of 5 stars based on 2 ratings. We collect ratings and reviews of Dr. John Michael Cahill, MD from all over the web to help you find the right in Elmhurst, IL.

4.5

Overall Rating

(2 Ratings)

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General Payments

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

**Payments by Company**
Janssen Pharmaceuticals, Inc	$2,647 XARELTO $2,575	INVOKANA $73
Novartis Pharmaceuticals Corporation	$671 ENTRESTO $411	LEQVIO $260
Pfizer Inc.	$523 ELIQUIS $326	NURTEC ODT $71	PAXLOVID $57	VYNDAQEL $57	CHANTIX $12
Boehringer Ingelheim Pharmaceuticals, Inc.	$406 JARDIANCE $406
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)	$389 LifeVest $389
Other	$2,651 Repatha $347	STENTS $216	CAMZYOS $136	PRALUENT (alirocumab) Injection $133	Launcher $128	Other $1,692

**Types of Payments**
Food and Beverage	$7,121
Education	$116
Travel and Lodging	$50

Biography

Dr. John Cahill's specialties are general practice, adult cardiology, and interventional cardiology. He practices in Elmhurst, IL. He is a graduate of Loyola University Chicago, Stritch School of Medicine. He is professionally affiliated with Elmhurst Hospital (Elmhurst, IL).