In 2023, Dr. John A. Williams, MD had a list price for cardiac imaging, color Doppler echocardiography, Doppler echocardiography, echocardiogram (echo), electrocardiogram (EKG), spectral Doppler echocardiography, stress EKG, and transthoracic echocardiography (TTE) that was lower than the list prices billed to Medicare by 95% of providers in related specialties within Alabama. 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 10%

By Affordability:

cardiac stress testing

myocardial perfusion SPECT

In 2023, Dr. John A. Williams, MD had a list price for cardiac (heart) stress testing, myocardial perfusion SPECT, nuclear scan, nuclear stress test (myocardial perfusion imaging), SPECT scan, and stress testing that was lower than the list prices billed to Medicare by 90% of providers in related specialties within Alabama. 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 A. Williams, MD treated as a cardiologist in Montgomery, AL during 2012 were cardiac procedures, hospital care, stress testing and inpatient care.

Volume of procedures performed by Dr. John A. Williams, MD for Medicare patients.

ambulatory monitoring	49
cardiac procedures	1148
cardioversion	14
catheterization	144
diagnostic procedures	107
doctor visit	1797
emergency care	14
hospital care	589
implant surgery	15
inpatient care	561
lab tests	449
minimally invasive procedures	159
nuclear scan	285
outpatient care	28
stent placement (stenting)	37
stress testing	575
ultrasound (sonogram)	365
vascular procedures	87

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John A. Williams, MD treated as a cardiologist in Montgomery, AL during 2013 were cardiac procedures, hospital care, stress testing and inpatient care.

Volume of procedures performed by Dr. John A. Williams, MD for Medicare patients.

ambulatory monitoring	36
angioplasty	72
cardiac procedures	1167
catheterization	210
diagnostic procedures	102
doctor visit	1682
emergency care	12
hospital care	512
implant surgery	18
inpatient care	484
lab tests	329
minimally invasive procedures	228
nuclear scan	247
outpatient care	28
stent placement (stenting)	72
stress testing	503
ultrasound (sonogram)	400
vascular procedures	89

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John A. Williams, MD.

**Gender**
Male	722
Female	685

**Ethnicity**
Non-Hispanic White	1199
Black	187
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	517
From 75 to 84	515
85 and over	236
Less than 65	139

Conditions of Medicare patients treated by Dr. John A. Williams, MD in 2013

Hypertension	75
High Cholesterol	70
Stroke	12
Ischemic Heart Disease	68
Depression	16
Chronic Kidney Disease	30
Asthma	7
Osteoperosis	6
Atrial Fibrilation	23
Heart Failure	35
Chronic Obstructive Pulmonary Disease	26
Diabetes	39
Dementia	15
Cancer	12

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John A. Williams, MD treated as a cardiologist in Montgomery, AL during 2014 were cardiac procedures, stress testing, hospital care and inpatient care.

Volume of procedures performed by Dr. John A. Williams, MD for Medicare patients.

ambulatory monitoring	23
angioplasty	94
cardiac procedures	1283
cardioversion	13
catheterization	261
diagnostic procedures	121
doctor visit	1835
emergency care	17
hospital care	520
implant surgery	13
inpatient care	479
lab tests	276
minimally invasive procedures	274
nuclear scan	285
outpatient care	41
stent placement (stenting)	66
stress testing	567
ultrasound (sonogram)	419
vascular procedures	121

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John A. Williams, MD.

**Gender**
Male	720
Female	679

**Ethnicity**
Non-Hispanic White	1203
Black	181
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	491
From 75 to 84	528
85 and over	239
Less than 65	141

Conditions of Medicare patients treated by Dr. John A. Williams, MD in 2014

Hypertension	75
High Cholesterol	69
Stroke	13
Ischemic Heart Disease	68
Depression	19
Chronic Kidney Disease	30
Asthma	8
Osteoperosis	6
Atrial Fibrilation	21
Heart Failure	34
Chronic Obstructive Pulmonary Disease	26
Diabetes	39
Dementia	15
Cancer	11

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John A. Williams, MD treated as a cardiologist in Montgomery, AL during 2015 were cardiac procedures, hospital care, inpatient care and ultrasound (sonogram).

Volume of procedures performed by Dr. John A. Williams, MD for Medicare patients.

ambulatory monitoring	24
angioplasty	82
cardiac procedures	1594
cardioversion	17
catheterization	227
diagnostic procedures	104
doctor visit	1951
emergency care	21
hospital care	950
implant surgery	25
inpatient care	874
minimally invasive procedures	252
nuclear scan	272
outpatient care	76
stent placement (stenting)	82
stress testing	544
ultrasound (sonogram)	774
vascular procedures	104

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John A. Williams, MD.

**Gender**
Male	1914
Female	1848

**Ethnicity**
Non-Hispanic White	3072
Black	602
Hispanic	0
Asian	0
Other	42
Native American	0

**Age**
From 65 to 74	1378
From 75 to 84	1340
85 and over	666
Less than 65	378

Conditions of Medicare patients treated by Dr. John A. Williams, MD in 2015

Hypertension	75
High Cholesterol	67
Stroke	12
Ischemic Heart Disease	64
Depression	19
Chronic Kidney Disease	35
Asthma	17
Osteoperosis	8
Atrial Fibrilation	23
Heart Failure	37
Chronic Obstructive Pulmonary Disease	27
Diabetes	40
Dementia	16
Cancer	12

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John A. Williams, MD treated as a cardiologist in Montgomery, AL during 2016 were cardiac procedures, hospital care, inpatient care and ultrasound (sonogram).

Volume of procedures performed by Dr. John A. Williams, MD for Medicare patients.

ambulatory monitoring	27
angioplasty	64
cardiac procedures	1345
catheterization	178
diagnostic procedures	82
doctor visit	1730
emergency care	33
hospital care	921
implant surgery	19
inpatient care	781
minimally invasive procedures	197
nuclear scan	256
outpatient care	140
stent placement (stenting)	64
stress testing	510
ultrasound (sonogram)	611
vascular procedures	82

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John A. Williams, MD.

**Gender**
Male	806
Female	790

**Ethnicity**
Non-Hispanic White	1297
Black	275
Hispanic	0
Asian	0
Other	13
Native American	0

**Age**
From 65 to 74	567
From 75 to 84	596
85 and over	273
Less than 65	160

Conditions of Medicare patients treated by Dr. John A. Williams, MD in 2016

Hypertension	75
High Cholesterol	71
Stroke	12
Ischemic Heart Disease	67
Depression	18
Chronic Kidney Disease	42
Asthma	28
Osteoperosis	7
Atrial Fibrilation	22
Heart Failure	39
Chronic Obstructive Pulmonary Disease	27
Diabetes	40
Dementia	18
Cancer	12

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John A. Williams, MD treated as a cardiologist in Montgomery, AL during 2017 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John A. Williams, MD for Medicare patients.

cardiac procedures	300
catheterization	17
diagnostic procedures	17
doctor visit	397
hospital care	348
inpatient care	332
minimally invasive procedures	17
nuclear scan	46
outpatient care	16
stress testing	94
ultrasound (sonogram)	189
vascular procedures	17

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John A. Williams, MD.

**Gender**
Male	326
Female	309

**Ethnicity**
Non-Hispanic White	524
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	189
From 75 to 84	233
85 and over	135
Less than 65	78

Conditions of Medicare patients treated by Dr. John A. Williams, MD in 2017

Hypertension	75
High Cholesterol	71
Stroke	9
Ischemic Heart Disease	73
Depression	23
Chronic Kidney Disease	48
Asthma	8
Osteoperosis	7
Atrial Fibrilation	29
Heart Failure	45
Chronic Obstructive Pulmonary Disease	28
Diabetes	44
Dementia	17
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John A. Williams, MD treated as a cardiologist in Montgomery, AL during 2018 were stress testing and cardiac procedures.

Volume of procedures performed by Dr. John A. Williams, MD for Medicare patients.

cardiac procedures	54
doctor visit	14
stress testing	54

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John A. Williams, MD.

**Gender**
Male	22
Female	36

**Age**
From 65 to 74	13
From 75 to 84	22
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John A. Williams, MD in 2018

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	67
Depression	21
Chronic Kidney Disease	21
Asthma	0
Osteoperosis	0
Atrial Fibrilation	24
Heart Failure	21
Chronic Obstructive Pulmonary Disease	22
Diabetes	28
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John A. Williams, MD treated as a cardiologist in Montgomery, AL during 2019 were cardiac procedures, stress testing, ultrasound (sonogram) and nuclear scan.

Volume of procedures performed by Dr. John A. Williams, MD for Medicare patients.

cardiac procedures	217
doctor visit	214
nuclear scan	47
stress testing	127
ultrasound (sonogram)	90

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John A. Williams, MD.

**Gender**
Male	112
Female	107

**Ethnicity**
Non-Hispanic White	160
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	74
From 75 to 84	74
85 and over	36
Less than 65	35

Conditions of Medicare patients treated by Dr. John A. Williams, MD in 2019

Hypertension	75
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	58
Depression	17
Chronic Kidney Disease	32
Asthma	6
Osteoperosis	5
Atrial Fibrilation	16
Heart Failure	33
Chronic Obstructive Pulmonary Disease	23
Diabetes	40
Dementia	14
Cancer	10

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John A. Williams, MD treated as a cardiologist in Montgomery, AL during 2020 were cardiac procedures, stress testing and ultrasound (sonogram).

Volume of procedures performed by Dr. John A. Williams, MD for Medicare patients.

cardiac procedures	137
doctor visit	75
stress testing	80
ultrasound (sonogram)	57

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John A. Williams, MD.

**Gender**
Male	84
Female	111

**Ethnicity**
Non-Hispanic White	132
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	80
From 75 to 84	60
85 and over	23
Less than 65	32

Conditions of Medicare patients treated by Dr. John A. Williams, MD in 2020

Hypertension	75
High Cholesterol	72
Stroke	6
Ischemic Heart Disease	58
Depression	23
Chronic Kidney Disease	45
Asthma	7
Osteoperosis	0
Atrial Fibrilation	17
Heart Failure	36
Chronic Obstructive Pulmonary Disease	25
Diabetes	42
Dementia	15
Cancer	9

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John A. Williams, MD treated as a cardiologist in Montgomery, AL during 2021 were cardiac procedures, ultrasound (sonogram), stress testing and nuclear scan.

Volume of procedures performed by Dr. John A. Williams, MD for Medicare patients.

cardiac procedures	248
doctor visit	203
nuclear scan	20
stress testing	123
ultrasound (sonogram)	125

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John A. Williams, MD.

**Gender**
Male	129
Female	155

**Ethnicity**
Non-Hispanic White	201
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	133
From 75 to 84	71
85 and over	42
Less than 65	38

Conditions of Medicare patients treated by Dr. John A. Williams, MD in 2021

Hypertension	75
High Cholesterol	75
Stroke	10
Ischemic Heart Disease	46
Depression	17
Chronic Kidney Disease	41
Asthma	5
Osteoperosis	6
Atrial Fibrilation	14
Heart Failure	31
Chronic Obstructive Pulmonary Disease	25
Diabetes	42
Dementia	14
Cancer	10

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John A. Williams, MD treated as a cardiologist in Montgomery, AL during 2022 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. John A. Williams, MD for Medicare patients.

cardiac procedures	151
doctor visit	191
hospital care	19
inpatient care	19
nuclear scan	17
stress testing	42
ultrasound (sonogram)	109

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John A. Williams, MD.

**Gender**
Male	110
Female	132

**Ethnicity**
Non-Hispanic White	179
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	94
From 75 to 84	82
85 and over	28
Less than 65	38

Conditions of Medicare patients treated by Dr. John A. Williams, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	14
Ischemic Heart Disease	36
Depression	17
Chronic Kidney Disease	23
Asthma	9
Osteoperosis	9
Atrial Fibrilation	27
Heart Failure	31
Chronic Obstructive Pulmonary Disease	30
Diabetes	38
Dementia	10
Cancer	12

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. John A. Williams, MD for Medicare patients.

The highest averages for the top procedures that Dr. John A. Williams, MD treated as a cardiologist in Montgomery, AL were cardiac procedures, hospital care, inpatient care and lab tests.

ambulatory monitoring	31
angioplasty	78
cardiac procedures	694
cardioversion	14
catheterization	172
diagnostic procedures	88
doctor visit	917
emergency care	19
hospital care	551
implant surgery	18
inpatient care	504
lab tests	351
minimally invasive procedures	187
nuclear scan	163
outpatient care	54
stent placement (stenting)	64
stress testing	292
ultrasound (sonogram)	313
vascular procedures	83

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. John A. Williams, MD.

**Gender**
Male	449
Female	441

**Ethnicity**
Black / African American	113
Asian / Pacific Islander	0
Non-Hispanic White	724
Native American / Alaskan Native	0
Hispanic	0
Other	5

**Age**
75 to 84	320
85 and over	152
Less than 65	94
65 to 74	321

Average of Total of Conditions of Medicare patients treated by Dr. John A. Williams, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. John A. Williams, MD treated were hypertension, high cholesterol, ischemic heart disease and diabetes.

Hypertension	68
High Cholesterol	65
Stroke	8
Ischemic Heart Disease	55
Depression	17
Chronic Kidney Disease	31
Asthma	8
Osteoporosis	4
Heart Failure	31
Chronic Obstructive Pulmonary Disease	23
Diabetes	35
Atrial Fibrillation	19
Dementia	12
Cancer	9

Education & Training

He has a state license in Alabama.

Licensed In: Alabama

Ratings & Reviews

Dr. John A. Williams, MD does not have any reviews yet, be the first to leave a review of Dr. John A. Williams, MD here: Leave a Review

(No ratings)

Leave a Review

General Payments

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

**Payments by Company**
AstraZeneca Pharmaceuticals LP	$1,893 BRILINTA $1,893
Janssen Pharmaceuticals, Inc	$1,288 XARELTO $1,256	INVOKANA $31
Amgen Inc.	$718 Repatha $324	Corlanor $297	$97
E.R. Squibb & Sons, L.L.C.	$686 ELIQUIS $686
Boehringer Ingelheim Pharmaceuticals, Inc.	$393 Pradaxa $379	JARDIANCE $14
Other	$2,204 Effient $256	BIDIL $187	PRALUENT $166	ELIQUIS $110	Cardiac Monitoring Suite $98	Other $1,387

**Types of Payments**
Food and Beverage	$7,181

Biography

Dr. John Williams is a Montgomery, AL physician who specializes in cardiology (heart disease). Dr. Williams has obtained a license to practice in Alabama.

Select Year:

Dr. John A. Williams, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. John A. Williams, MD in 2023

By Affordability:

By Affordability:

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

2013 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John A. Williams, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John A. Williams, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John A. Williams, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John A. Williams, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John A. Williams, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John A. Williams, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John A. Williams, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John A. Williams, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John A. Williams, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John A. Williams, MD in 2022

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Average Medicare Patient Data From 2012 - 2022

Average of Total of Conditions of Medicare patients treated by Dr. John A. Williams, MD From 2012 - 2022

Education & Training

Ratings & Reviews

General Payments

Biography

Cardiologists in Nearby Locations

Other Providers in Montgomery, AL