In 2023, among providers in related specialties within Michigan, Dr. John Allen Key, DO performed more cardiac procedures, Doppler echocardiography, and echocardiogram (echo) procedures for Medicare patients than 90% of them and he also had a list price for cardiac imaging 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 stress testing

myocardial perfusion SPECT

nuclear scan

ultrasound

By Affordability:

color Doppler echocardiography

Doppler echocardiography

echocardiogram

myocardial perfusion SPECT

nuclear scan

nuclear stress test

spectral Doppler echocardiography

SPECT scan

stress echo

transthoracic echocardiography

In 2012, among providers in related specialties within Michigan, Dr. John Allen Key, DO performed more cardiac (heart) stress testing, myocardial perfusion SPECT, nuclear scan, and ultrasound (sonogram) procedures for Medicare patients than 75% of them and he also had a list price for color Doppler echocardiography, Doppler echocardiography, echocardiogram (echo), myocardial perfusion SPECT, nuclear scan, nuclear stress test (myocardial perfusion imaging), spectral Doppler echocardiography, SPECT scan, stress echo, and transthoracic echocardiography (TTE) 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 Allen Key, DO treated as a cardiologist in Wyoming, MI during 2012 were cardiac procedures, ultrasound (sonogram), stress testing and vascular procedures.

Volume of procedures performed by Dr. John Allen Key, DO for Medicare patients.

cardiac procedures	575
catheterization	21
diagnostic procedures	21
doctor visit	516
hospital care	210
inpatient care	180
minimally invasive procedures	21
nuclear scan	95
outpatient care	12
stress testing	267
ultrasound (sonogram)	499
vascular procedures	231

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John Allen Key, DO treated as a cardiologist in Wyoming, MI during 2013 were cardiac procedures, ultrasound (sonogram), hospital care and inpatient care.

Volume of procedures performed by Dr. John Allen Key, DO for Medicare patients.

cardiac procedures	430
catheterization	15
diagnostic procedures	15
doctor visit	497
hospital care	260
inpatient care	231
minimally invasive procedures	15
nuclear scan	70
outpatient care	29
stress testing	201
ultrasound (sonogram)	421
vascular procedures	225

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John Allen Key, DO.

**Gender**
Male	488
Female	491

**Ethnicity**
Non-Hispanic White	884
Black	50
Hispanic	26
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	333
From 75 to 84	269
85 and over	170
Less than 65	207

Conditions of Medicare patients treated by Dr. John Allen Key, DO in 2013

Hypertension	75
High Cholesterol	74
Stroke	9
Ischemic Heart Disease	67
Depression	30
Chronic Kidney Disease	40
Asthma	10
Osteoperosis	6
Atrial Fibrilation	25
Heart Failure	41
Chronic Obstructive Pulmonary Disease	25
Diabetes	45
Dementia	12
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John Allen Key, DO treated as a cardiologist in Wyoming, MI during 2014 were cardiac procedures, ultrasound (sonogram), stress testing and vascular procedures.

Volume of procedures performed by Dr. John Allen Key, DO for Medicare patients.

cardiac procedures	682
catheterization	20
diagnostic procedures	20
doctor visit	633
hospital care	238
inpatient care	223
minimally invasive procedures	20
nuclear scan	96
outpatient care	15
stress testing	257
ultrasound (sonogram)	622
vascular procedures	242

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John Allen Key, DO.

**Gender**
Male	606
Female	639

**Ethnicity**
Non-Hispanic White	1124
Black	60
Hispanic	29
Asian	0
Other	15
Native American	0

**Age**
From 65 to 74	421
From 75 to 84	363
85 and over	229
Less than 65	232

Conditions of Medicare patients treated by Dr. John Allen Key, DO in 2014

Hypertension	75
High Cholesterol	73
Stroke	7
Ischemic Heart Disease	68
Depression	30
Chronic Kidney Disease	43
Asthma	9
Osteoperosis	7
Atrial Fibrilation	27
Heart Failure	42
Chronic Obstructive Pulmonary Disease	24
Diabetes	44
Dementia	12
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John Allen Key, DO treated as a cardiologist in Wyoming, MI during 2015 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. John Allen Key, DO for Medicare patients.

cardiac procedures	647
catheterization	19
diagnostic procedures	19
doctor visit	544
hospital care	251
inpatient care	251
minimally invasive procedures	19
nuclear scan	106
stress testing	251
ultrasound (sonogram)	499
vascular procedures	141

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John Allen Key, DO.

**Gender**
Male	1060
Female	1126

**Ethnicity**
Non-Hispanic White	1952
Black	124
Hispanic	48
Asian	0
Other	36
Native American	0

**Age**
From 65 to 74	782
From 75 to 84	614
85 and over	382
Less than 65	408

Conditions of Medicare patients treated by Dr. John Allen Key, DO in 2015

Hypertension	75
High Cholesterol	72
Stroke	9
Ischemic Heart Disease	65
Depression	31
Chronic Kidney Disease	48
Asthma	20
Osteoperosis	7
Atrial Fibrilation	30
Heart Failure	42
Chronic Obstructive Pulmonary Disease	26
Diabetes	45
Dementia	13
Cancer	12

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John Allen Key, DO treated as a cardiologist in Wyoming, MI during 2016 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. John Allen Key, DO for Medicare patients.

cardiac procedures	539
catheterization	25
diagnostic procedures	25
doctor visit	468
hospital care	154
inpatient care	154
lab tests	53
minimally invasive procedures	25
nuclear scan	86
stress testing	187
ultrasound (sonogram)	413
vascular procedures	92

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John Allen Key, DO.

**Gender**
Male	477
Female	468

**Ethnicity**
Non-Hispanic White	847
Black	57
Hispanic	20
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	346
From 75 to 84	264
85 and over	176
Less than 65	159

Conditions of Medicare patients treated by Dr. John Allen Key, DO in 2016

Hypertension	75
High Cholesterol	72
Stroke	7
Ischemic Heart Disease	69
Depression	28
Chronic Kidney Disease	50
Asthma	26
Osteoperosis	7
Atrial Fibrilation	30
Heart Failure	43
Chronic Obstructive Pulmonary Disease	26
Diabetes	45
Dementia	13
Cancer	12

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John Allen Key, DO treated as a cardiologist in Wyoming, MI during 2017 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. John Allen Key, DO for Medicare patients.

cardiac procedures	657
doctor visit	249
hospital care	182
inpatient care	182
nuclear scan	109
stress testing	230
ultrasound (sonogram)	479

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John Allen Key, DO.

**Gender**
Male	578
Female	623

**Ethnicity**
Non-Hispanic White	1098
Black	53
Hispanic	21
Asian	12
Other	17
Native American	0

**Age**
From 65 to 74	474
From 75 to 84	384
85 and over	181
Less than 65	162

Conditions of Medicare patients treated by Dr. John Allen Key, DO in 2017

Hypertension	75
High Cholesterol	66
Stroke	9
Ischemic Heart Disease	55
Depression	29
Chronic Kidney Disease	43
Asthma	7
Osteoperosis	9
Atrial Fibrilation	28
Heart Failure	37
Chronic Obstructive Pulmonary Disease	25
Diabetes	37
Dementia	12
Cancer	14

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John Allen Key, DO treated as a cardiologist in Wyoming, MI during 2018 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. John Allen Key, DO for Medicare patients.

cardiac procedures	1300
doctor visit	343
hospital care	289
inpatient care	289
nuclear scan	239
stress testing	446
ultrasound (sonogram)	967
vascular procedures	38

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John Allen Key, DO.

**Gender**
Male	1103
Female	1238

**Ethnicity**
Non-Hispanic White	2103
Black	118
Hispanic	55
Asian	0
Other	47
Native American	0

**Age**
From 65 to 74	922
From 75 to 84	679
85 and over	318
Less than 65	422

Conditions of Medicare patients treated by Dr. John Allen Key, DO in 2018

Hypertension	75
High Cholesterol	70
Stroke	10
Ischemic Heart Disease	54
Depression	33
Chronic Kidney Disease	45
Asthma	8
Osteoperosis	9
Atrial Fibrilation	26
Heart Failure	39
Chronic Obstructive Pulmonary Disease	27
Diabetes	38
Dementia	14
Cancer	13

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John Allen Key, DO treated as a cardiologist in Wyoming, MI during 2019 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. John Allen Key, DO for Medicare patients.

cardiac procedures	1190
doctor visit	262
hospital care	252
inpatient care	252
nuclear scan	218
stress testing	396
ultrasound (sonogram)	882
vascular procedures	30

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John Allen Key, DO.

**Gender**
Male	1183
Female	1216

**Ethnicity**
Non-Hispanic White	2159
Black	110
Hispanic	50
Asian	0
Other	52
Native American	0

**Age**
From 65 to 74	991
From 75 to 84	685
85 and over	322
Less than 65	401

Conditions of Medicare patients treated by Dr. John Allen Key, DO in 2019

Hypertension	75
High Cholesterol	69
Stroke	9
Ischemic Heart Disease	54
Depression	34
Chronic Kidney Disease	44
Asthma	9
Osteoperosis	9
Atrial Fibrilation	26
Heart Failure	39
Chronic Obstructive Pulmonary Disease	27
Diabetes	38
Dementia	13
Cancer	14

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John Allen Key, DO treated as a cardiologist in Wyoming, MI during 2020 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. John Allen Key, DO for Medicare patients.

cardiac procedures	834
doctor visit	257
hospital care	158
inpatient care	158
nuclear scan	147
stress testing	249
ultrasound (sonogram)	630
vascular procedures	12

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John Allen Key, DO.

**Gender**
Male	928
Female	934

**Ethnicity**
Non-Hispanic White	1688
Black	68
Hispanic	41
Asian	0
Other	44
Native American	0

**Age**
From 65 to 74	790
From 75 to 84	532
85 and over	254
Less than 65	286

Conditions of Medicare patients treated by Dr. John Allen Key, DO in 2020

Hypertension	75
High Cholesterol	71
Stroke	10
Ischemic Heart Disease	58
Depression	32
Chronic Kidney Disease	45
Asthma	8
Osteoperosis	8
Atrial Fibrilation	26
Heart Failure	40
Chronic Obstructive Pulmonary Disease	24
Diabetes	38
Dementia	14
Cancer	13

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John Allen Key, DO treated as a cardiologist in Wyoming, MI during 2021 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. John Allen Key, DO for Medicare patients.

cardiac procedures	749
doctor visit	264
hospital care	160
inpatient care	160
nuclear scan	102
stress testing	196
ultrasound (sonogram)	594

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John Allen Key, DO.

**Gender**
Male	843
Female	908

**Ethnicity**
Non-Hispanic White	1591
Black	69
Hispanic	43
Asian	0
Other	32
Native American	0

**Age**
From 65 to 74	721
From 75 to 84	509
85 and over	258
Less than 65	263

Conditions of Medicare patients treated by Dr. John Allen Key, DO in 2021

Hypertension	75
High Cholesterol	71
Stroke	8
Ischemic Heart Disease	59
Depression	33
Chronic Kidney Disease	48
Asthma	10
Osteoperosis	10
Atrial Fibrilation	31
Heart Failure	42
Chronic Obstructive Pulmonary Disease	26
Diabetes	38
Dementia	14
Cancer	13

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John Allen Key, DO treated as a cardiologist in Wyoming, MI during 2022 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. John Allen Key, DO for Medicare patients.

cardiac procedures	725
cardioversion	14
doctor visit	213
hospital care	103
inpatient care	103
minimally invasive procedures	21
nuclear scan	83
stress testing	141
ultrasound (sonogram)	600

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John Allen Key, DO.

**Gender**
Male	730
Female	750

**Ethnicity**
Non-Hispanic White	1322
Black	71
Hispanic	32
Asian	0
Other	44
Native American	0

**Age**
From 65 to 74	572
From 75 to 84	494
85 and over	223
Less than 65	191

Conditions of Medicare patients treated by Dr. John Allen Key, DO in 2022

Hypertension	75
High Cholesterol	75
Stroke	14
Ischemic Heart Disease	48
Depression	32
Chronic Kidney Disease	38
Asthma	11
Osteoperosis	13
Atrial Fibrilation	43
Heart Failure	44
Chronic Obstructive Pulmonary Disease	28
Diabetes	38
Dementia	10
Cancer	18

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. John Allen Key, DO treated as a cardiologist in Wyoming, MI during 2023 were cardiac procedures, ultrasound (sonogram), stress testing and nuclear scan.

Volume of procedures performed by Dr. John Allen Key, DO for Medicare patients.

cardiac procedures	806
cardioversion	23
doctor visit	127
hospital care	102
inpatient care	102
minimally invasive procedures	22
nuclear scan	105
stress testing	194
ultrasound (sonogram)	625

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. John Allen Key, DO.

**Gender**
Male	594
Female	595

**Ethnicity**
Non-Hispanic White	1084
Black	37
Hispanic	25
Asian	0
Other	32
Native American	0

**Age**
From 65 to 74	469
From 75 to 84	391
85 and over	197
Less than 65	132

Conditions of Medicare patients treated by Dr. John Allen Key, DO in 2023

Hypertension	75
High Cholesterol	75
Stroke	14
Ischemic Heart Disease	49
Depression	30
Chronic Kidney Disease	40
Asthma	10
Osteoperosis	14
Atrial Fibrilation	47
Heart Failure	48
Chronic Obstructive Pulmonary Disease	31
Diabetes	39
Dementia	10
Cancer	20

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. John Allen Key, DO for Medicare patients.

The highest averages for the top procedures that Dr. John Allen Key, DO treated as a cardiologist in Wyoming, MI were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

cardiac procedures	761
cardioversion	18
catheterization	20
diagnostic procedures	20
doctor visit	364
hospital care	196
inpatient care	190
lab tests	53
minimally invasive procedures	20
nuclear scan	121
outpatient care	18
stress testing	251
ultrasound (sonogram)	602
vascular procedures	126

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. John Allen Key, DO.

**Gender**
Female	749
Male	715

**Ethnicity**
Black / African American	68
Asian / Pacific Islander	1
Non-Hispanic White	1321
Native American / Alaskan Native	0
Hispanic	32
Other	26

**Age**
75 to 84	432
85 and over	225
Less than 65	238
65 to 74	568

Average of Total of Conditions of Medicare patients treated by Dr. John Allen Key, DO From 2012 - 2023

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

Hypertension	68
High Cholesterol	65
Stroke	8
Ischemic Heart Disease	53
Depression	28
Chronic Kidney Disease	40
Asthma	10
Osteoporosis	8
Heart Failure	38
Chronic Obstructive Pulmonary Disease	24
Diabetes	37
Atrial Fibrillation	28
Dementia	11
Cancer	12

Education & Training

He has a state license in Michigan.

Licensed In: Michigan

Ratings & Reviews

Dr. John Allen Key, DO has an exceptional overall rating with an average of 4.91 out of 5 stars based on 66 ratings. We collect ratings and reviews of Dr. John Allen Key, DO from all over the web to help you find the right in Wyoming, MI.

4.91

Overall Rating

(66 Ratings)

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General Payments

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

**Payments by Company**
St. Jude Medical, Inc.	$653 Vascular $306	CRM $210	Microny ll SR plus Pacemaker $118	Structural Heart $20
Medtronic Vascular, Inc.	$202 Evera $123	Implantable Cardioverter Defibrillators - ICDs $65	Adapta $14
Novo Nordisk Inc	$148 Ozempic $148
The Medicines Company	$145 CLEVIPREX $90	ANGIOMAX $56
AstraZeneca Pharmaceuticals LP	$140 BRILINTA $140
Other	$555 Pradaxa $109	ENTRESTO $100	Diamondback Coronary $66	PROMUS EVEROLIMUS-ELUTING CORONARY STENT SYSTEM $55	INTERVENTIONAL PRODUCT $38	Other $186