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Home > TX Providers > Interventional Cardiologists

Dr. John Kennedy Gresham, MD

(1 Rating)

Specializes in: Interventional Cardiology, Nuclear Cardiology and Adult Cardiology

Eastern Virginia Medical School (1999)

540 Oak Centre Drive Suite 260
San Antonio, TX 78258

(210) 499-0448

Dr. John Kennedy Gresham, MD is an interventional cardiologist in San Antonio, TX specializing in interventional cardiology, nuclear cardiology and adult cardiology. He graduated from Eastern Virginia Medical School in 1999 and has 27 years of experience.

Office Locations

540 Oak Centre Drive Suite 260
San Antonio, TX 78258

(210) 499-0448

(210) 370-9638

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Noteworthy Medicare Patient Procedures Performed by Dr. John Kennedy Gresham, MD in 2023

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

Top 10%

By Volume:

lower extremity arterial duplex

In 2023, Dr. John Kennedy Gresham, MD performed more lower extremity arterial duplex procedures for Medicare patients than 90% of providers in related specialties within Texas.

Top 25%

By Volume:

cardiac procedures

Doppler echocardiography

echocardiogram

inpatient hospital care

lower extremity venous duplex

ultrasound

vascular procedures

vascular ultrasound

By Affordability:

color Doppler echocardiography

Doppler echocardiography

endovenous radiofrequency ablation

lower extremity venous ultrasound

lower extremity venous duplex

spectral Doppler echocardiography

vascular studies

vascular ultrasound

venous duplex ultrasound

In 2012, among providers in related specialties within Texas, Dr. John Kennedy Gresham, MD performed more cardiac procedures, Doppler echocardiography, echocardiogram (echo), inpatient hospital care (for patient admitted to hospital), lower extremity venous duplex, ultrasound (sonogram), vascular procedures, and vascular ultrasound procedures for Medicare patients than 75% of them and he also had a list price for color Doppler echocardiography, Doppler echocardiography, duplex ultrasound, echocardiogram (echo), emergency care, endovenous ablation, endovenous radiofrequency ablation (Venefit procedure), lower extremity (leg) venous ultrasound, lower extremity venous duplex, spectral Doppler echocardiography, vascular studies, vascular ultrasound, and venous duplex ultrasound 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 Kennedy Gresham, MD treated as an interventional cardiologist in San Antonio, TX during 2012 were inpatient care, hospital care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Kennedy Gresham, MD for Medicare patients.

ambulatory monitoring	17
cardiac procedures	601
cardioversion	14
catheterization	38
diagnostic procedures	25
doctor visit	1180
hospital care	1136
inpatient care	1136
lab tests	181
minimally invasive procedures	38
nuclear scan	94
stent placement (stenting)	13
stress testing	183
ultrasound (sonogram)	363
vascular procedures	25

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John Kennedy Gresham, MD treated as an interventional cardiologist in San Antonio, TX during 2013 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Kennedy Gresham, MD for Medicare patients.

ambulatory monitoring	17
cardiac procedures	767
catheterization	28
diagnostic procedures	28
doctor visit	1372
hospital care	1053
inpatient care	1053
lab tests	192
minimally invasive procedures	28
nuclear scan	112
stress testing	249
ultrasound (sonogram)	491
vascular procedures	46

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John Kennedy Gresham, MD.

**Gender**
Male	554
Female	682

**Ethnicity**
Non-Hispanic White	977
Black	69
Hispanic	171
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	461
From 75 to 84	383
85 and over	256
Less than 65	136

Conditions of Medicare patients treated by Dr. John Kennedy Gresham, MD in 2013

Hypertension	75
High Cholesterol	74
Stroke	12
Ischemic Heart Disease	62
Depression	28
Chronic Kidney Disease	41
Asthma	13
Osteoperosis	11
Atrial Fibrilation	29
Heart Failure	37
Chronic Obstructive Pulmonary Disease	24
Diabetes	39
Dementia	21
Cancer	12

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John Kennedy Gresham, MD treated as an interventional cardiologist in San Antonio, TX during 2014 were inpatient care, hospital care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Kennedy Gresham, MD for Medicare patients.

ambulatory monitoring	14
cardiac procedures	610
cardioversion	15
catheterization	41
diagnostic procedures	41
doctor visit	1607
hospital care	1443
inpatient care	1443
lab tests	187
minimally invasive procedures	41
nuclear scan	105
stress testing	212
ultrasound (sonogram)	354
vascular procedures	52

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John Kennedy Gresham, MD.

**Gender**
Male	350
Female	366

**Ethnicity**
Non-Hispanic White	605
Black	20
Hispanic	76
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	310
From 75 to 84	241
85 and over	124
Less than 65	41

Conditions of Medicare patients treated by Dr. John Kennedy Gresham, MD in 2014

Hypertension	75
High Cholesterol	75
Stroke	9
Ischemic Heart Disease	62
Depression	23
Chronic Kidney Disease	40
Asthma	11
Osteoperosis	9
Atrial Fibrilation	27
Heart Failure	32
Chronic Obstructive Pulmonary Disease	20
Diabetes	34
Dementia	14
Cancer	13

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John Kennedy Gresham, MD treated as an interventional cardiologist in San Antonio, TX during 2015 were cardiac procedures, inpatient care, hospital care and ultrasound (sonogram).

Volume of procedures performed by Dr. John Kennedy Gresham, MD for Medicare patients.

ambulatory monitoring	33
cardiac procedures	944
cardioversion	13
catheterization	20
diagnostic procedures	20
doctor visit	1895
hospital care	862
inpatient care	862
lab tests	155
minimally invasive procedures	20
nuclear scan	178
stress testing	370
ultrasound (sonogram)	521
vascular procedures	20

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John Kennedy Gresham, MD.

**Gender**
Male	744
Female	802

**Ethnicity**
Non-Hispanic White	1302
Black	46
Hispanic	168
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	718
From 75 to 84	528
85 and over	212
Less than 65	88

Conditions of Medicare patients treated by Dr. John Kennedy Gresham, MD in 2015

Hypertension	75
High Cholesterol	75
Stroke	10
Ischemic Heart Disease	57
Depression	23
Chronic Kidney Disease	40
Asthma	15
Osteoperosis	9
Atrial Fibrilation	27
Heart Failure	28
Chronic Obstructive Pulmonary Disease	20
Diabetes	36
Dementia	14
Cancer	12

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John Kennedy Gresham, MD treated as an interventional cardiologist in San Antonio, TX during 2016 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Kennedy Gresham, MD for Medicare patients.

cardiac procedures	618
catheterization	26
diagnostic procedures	26
doctor visit	1902
hospital care	945
inpatient care	945
lab tests	68
minimally invasive procedures	26
nuclear scan	101
stress testing	209
ultrasound (sonogram)	383
vascular procedures	26

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John Kennedy Gresham, MD.

**Gender**
Male	423
Female	400

**Ethnicity**
Non-Hispanic White	703
Black	18
Hispanic	86
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	370
From 75 to 84	295
85 and over	122
Less than 65	36

Conditions of Medicare patients treated by Dr. John Kennedy Gresham, MD in 2016

Hypertension	75
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	59
Depression	24
Chronic Kidney Disease	45
Asthma	22
Osteoperosis	8
Atrial Fibrilation	26
Heart Failure	26
Chronic Obstructive Pulmonary Disease	18
Diabetes	37
Dementia	15
Cancer	14

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John Kennedy Gresham, MD treated as an interventional cardiologist in San Antonio, TX during 2017 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Kennedy Gresham, MD for Medicare patients.

cardiac procedures	928
cardioversion	18
catheterization	40
diagnostic procedures	40
doctor visit	2105
hospital care	1180
inpatient care	1180
minimally invasive procedures	40
nuclear scan	160
stress testing	342
ultrasound (sonogram)	546
vascular procedures	40

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John Kennedy Gresham, MD.

**Gender**
Male	437
Female	443

**Ethnicity**
Non-Hispanic White	722
Black	20
Hispanic	115
Asian	11
Other	12
Native American	0

**Age**
From 65 to 74	412
From 75 to 84	292
85 and over	139
Less than 65	37

Conditions of Medicare patients treated by Dr. John Kennedy Gresham, MD in 2017

Hypertension	75
High Cholesterol	61
Stroke	8
Ischemic Heart Disease	58
Depression	24
Chronic Kidney Disease	45
Asthma	9
Osteoperosis	10
Atrial Fibrilation	26
Heart Failure	25
Chronic Obstructive Pulmonary Disease	20
Diabetes	37
Dementia	16
Cancer	14

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John Kennedy Gresham, MD treated as an interventional cardiologist in San Antonio, TX during 2018 were inpatient care, hospital care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Kennedy Gresham, MD for Medicare patients.

ablation	236
cardiac procedures	960
cardioversion	13
catheterization	42
diagnostic procedures	31
doctor visit	2311
emergency care	11
hospital care	1179
inpatient care	1179
minimally invasive procedures	278
nuclear scan	172
stress testing	362
ultrasound (sonogram)	822
vascular procedures	415

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John Kennedy Gresham, MD.

**Gender**
Male	443
Female	439

**Ethnicity**
Non-Hispanic White	730
Black	17
Hispanic	109
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	383
From 75 to 84	329
85 and over	135
Less than 65	35

Conditions of Medicare patients treated by Dr. John Kennedy Gresham, MD in 2018

Hypertension	75
High Cholesterol	75
Stroke	10
Ischemic Heart Disease	56
Depression	22
Chronic Kidney Disease	46
Asthma	10
Osteoperosis	9
Atrial Fibrilation	27
Heart Failure	25
Chronic Obstructive Pulmonary Disease	22
Diabetes	35
Dementia	16
Cancer	13

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John Kennedy Gresham, MD treated as an interventional cardiologist in San Antonio, TX during 2019 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Kennedy Gresham, MD for Medicare patients.

ablation	104
cardiac procedures	960
cardioversion	18
catheterization	39
diagnostic procedures	39
doctor visit	2191
hospital care	1244
inpatient care	1244
minimally invasive procedures	143
nuclear scan	163
stress testing	348
ultrasound (sonogram)	740
vascular procedures	299

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John Kennedy Gresham, MD.

**Gender**
Male	447
Female	432

**Ethnicity**
Non-Hispanic White	729
Black	17
Hispanic	101
Asian	13
Other	19
Native American	0

**Age**
From 65 to 74	392
From 75 to 84	328
85 and over	126
Less than 65	33

Conditions of Medicare patients treated by Dr. John Kennedy Gresham, MD in 2019

Hypertension	75
High Cholesterol	75
Stroke	9
Ischemic Heart Disease	56
Depression	21
Chronic Kidney Disease	48
Asthma	11
Osteoperosis	10
Atrial Fibrilation	27
Heart Failure	26
Chronic Obstructive Pulmonary Disease	18
Diabetes	37
Dementia	16
Cancer	14

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John Kennedy Gresham, MD treated as an interventional cardiologist in San Antonio, TX during 2020 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. John Kennedy Gresham, MD for Medicare patients.

ablation	30
cardiac procedures	742
catheterization	18
diagnostic procedures	18
doctor visit	1882
hospital care	193
inpatient care	193
minimally invasive procedures	48
nuclear scan	97
stress testing	216
ultrasound (sonogram)	601
vascular procedures	126

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John Kennedy Gresham, MD.

**Gender**
Male	389
Female	380

**Ethnicity**
Non-Hispanic White	638
Black	22
Hispanic	82
Asian	12
Other	15
Native American	0

**Age**
From 65 to 74	355
From 75 to 84	292
85 and over	101
Less than 65	21

Conditions of Medicare patients treated by Dr. John Kennedy Gresham, MD in 2020

Hypertension	75
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	53
Depression	18
Chronic Kidney Disease	43
Asthma	9
Osteoperosis	9
Atrial Fibrilation	22
Heart Failure	21
Chronic Obstructive Pulmonary Disease	15
Diabetes	32
Dementia	12
Cancer	13

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John Kennedy Gresham, MD treated as an interventional cardiologist in San Antonio, TX during 2021 were cardiac procedures, ultrasound (sonogram), hospital care and inpatient care.

Volume of procedures performed by Dr. John Kennedy Gresham, MD for Medicare patients.

ablation	60
cardiac procedures	695
catheterization	20
diagnostic procedures	20
doctor visit	1794
hospital care	372
inpatient care	372
minimally invasive procedures	80
nuclear scan	74
stress testing	165
ultrasound (sonogram)	608
vascular procedures	159

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John Kennedy Gresham, MD.

**Gender**
Male	360
Female	377

**Ethnicity**
Non-Hispanic White	609
Black	15
Hispanic	90
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	327
From 75 to 84	286
85 and over	104
Less than 65	20

Conditions of Medicare patients treated by Dr. John Kennedy Gresham, MD in 2021

Hypertension	75
High Cholesterol	75
Stroke	9
Ischemic Heart Disease	51
Depression	20
Chronic Kidney Disease	44
Asthma	9
Osteoperosis	12
Atrial Fibrilation	21
Heart Failure	21
Chronic Obstructive Pulmonary Disease	17
Diabetes	32
Dementia	13
Cancer	14

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John Kennedy Gresham, MD treated as an interventional cardiologist in San Antonio, TX during 2022 were cardiac procedures, ultrasound (sonogram), hospital care and inpatient care.

Volume of procedures performed by Dr. John Kennedy Gresham, MD for Medicare patients.

ambulatory monitoring	29
cardiac procedures	853
catheterization	27
diagnostic procedures	27
doctor visit	1930
hospital care	575
inpatient care	575
minimally invasive procedures	27
nuclear scan	120
stress testing	241
ultrasound (sonogram)	687
vascular procedures	158

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John Kennedy Gresham, MD.

**Gender**
Male	395
Female	424

**Ethnicity**
Non-Hispanic White	689
Black	17
Hispanic	88
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	346
From 75 to 84	348
85 and over	109
Less than 65	16

Conditions of Medicare patients treated by Dr. John Kennedy Gresham, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	15
Ischemic Heart Disease	42
Depression	20
Chronic Kidney Disease	35
Asthma	13
Osteoperosis	16
Atrial Fibrilation	31
Heart Failure	25
Chronic Obstructive Pulmonary Disease	20
Diabetes	31
Dementia	9
Cancer	18

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. John Kennedy Gresham, MD for Medicare patients.

The highest averages for the top procedures that Dr. John Kennedy Gresham, MD treated as an interventional cardiologist in San Antonio, TX were inpatient care, hospital care, cardiac procedures and ultrasound (sonogram).

ablation	107
ambulatory monitoring	22
cardiac procedures	788
cardioversion	15
catheterization	30
diagnostic procedures	28
doctor visit	1833
emergency care	11
hospital care	925
inpatient care	925
lab tests	156
minimally invasive procedures	69
nuclear scan	125
stent placement (stenting)	13
stress testing	263
ultrasound (sonogram)	556
vascular procedures	124

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. John Kennedy Gresham, MD.

**Gender**
Male	412
Female	431

**Ethnicity**
Black / African American	23
Asian / Pacific Islander	3
Non-Hispanic White	700
Native American / Alaskan Native	0
Hispanic	98
Other	4

**Age**
75 to 84	302
85 and over	129
Less than 65	42
65 to 74	370

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

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

Hypertension	68
High Cholesterol	66
Stroke	8
Ischemic Heart Disease	50
Depression	20
Chronic Kidney Disease	38
Asthma	11
Osteoporosis	9
Heart Failure	24
Chronic Obstructive Pulmonary Disease	17
Diabetes	31
Atrial Fibrillation	23
Dementia	13
Cancer	12

Education & Training

Dr. John Kennedy Gresham, MD graduated from Eastern Virginia Medical School in 1999. He has a state license in Virginia.

Medical School: Eastern Virginia Medical School (1999)

Licensed In: Virginia

Ratings & Reviews

Dr. John Kennedy Gresham, MD has an exceptional overall rating with an average of 5.0 out of 5 stars based on 1 ratings. We collect ratings and reviews of Dr. John Kennedy Gresham, MD from all over the web to help you find the right in San Antonio, TX.

Overall Rating

(1 Rating)

Leave a Review

Reviews Left On DocSpot

Overall Rating: 5.0 2016-10-27

Great doctor. Met him in the hospital after having a heart attack. I have kept him as my cardiologist since then which happened in 2014.  Any concerns I have had he has addressed promptly. The PA in this office is good too, but is very quick with his visit. I'd prefer to see the doc. Gresham is very knowledgeable.

General Payments

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

**Payments by Company**
Medtronic Vascular, Inc.	$1,772 VenaSeal $803	ClosureFast $697	Pacemakers $52	Reveal LINQ $48	ClosureRFS $36	Other $135
Janssen Pharmaceuticals, Inc	$1,652 XARELTO $1,650	$2
AngioDynamics, Inc.	$1,370 Asclera $21	$1,349
Actelion Pharmaceuticals US, Inc.	$1,040 OPSUMIT MACITENTAN $333	OPSUMIT $229	UPTRAVI $217	VELETRI EPOPROSTENOL $14	$248
Amgen Inc.	$1,017 Repatha $779	Corlanor $194	$44
Other	$8,710 BRILINTA $838	ENTRESTO $797	ELIQUIS $435	Pradaxa $394	PRALUENT $369	Other $5,876

**Types of Payments**
Food and Beverage	$13,292
Travel and Lodging	$2,098
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$114
Education	$59

Biography

Dr. John Gresham is a medical specialist in adult cardiology, interventional cardiology, and nuclear cardiology. He graduated from Eastern Virginia Medical School.

Select Year:

Dr. John Kennedy Gresham, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. John Kennedy Gresham, MD in 2023

By Volume:

By Volume:

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 Kennedy Gresham, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Kennedy Gresham, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Kennedy Gresham, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Kennedy Gresham, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Kennedy Gresham, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Kennedy Gresham, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Kennedy Gresham, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Kennedy Gresham, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Kennedy Gresham, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Kennedy Gresham, 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 Kennedy Gresham, MD From 2012 - 2022

Education & Training

Ratings & Reviews

General Payments

Biography

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