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Home > CA Providers > Cardiac Electrophysiologists

Dr. Roy Mattathu John, PhD, FRCP, MD

(1 Rating)

Specializes in: Cardiac Electrophysiology (Heart Rhythm) and Adult Cardiology

Government Medical College, Thiruvananthapuram

Professional interests include: left ventricular assist device (LVAD), catheter ablation, arrhythmias (irregular heartbeats), and more.

300 Pasteur Drive Floor 2
Palo Alto, CA 94305

(650) 723-7111

Dr. Roy Mattathu John, PhD, FRCP, MD is a cardiac electrophysiologist in San Jose, CA specializing in cardiac electrophysiology (heart rhythm) and adult cardiology. He graduated from Government Medical College, Thiruvananthapuram. Dr. Roy Mattathu John, PhD, FRCP, MD is affiliated with Stanford Health Care.

Office Locations

2585 Samaritan Drive Floor 2, Cardiac Arrhythmia Service In San Jose
San Jose, CA 95124

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Stanford Health Care

300 Pasteur Drive Floor 2
Palo Alto, CA 94305

(650) 723-7111

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5565 W Las Positas Boulevard Suite 150, Heart & Vascular Clinic Pleasanton
Pleasanton, CA 94588

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Some issues Dr. Roy Mattathu John, PhD, FRCP, MD can help you with:

Cardiac Resynchronization Therapy (CRT)

A cardiac resynchronization therapy device, also known as a CRT or biventricular pacemaker, is a kind of pacemaker that can help the heart work more effectively. In certain kinds of heart failure, the ventricles, or larger chambers in the heart, stop working together. When they are no longer in synch, the heart can't pump enough blood to meet the body's needs. CRT can help keep the heartbeat regular and the ventricles contracting at the same time.

Just as with a standard pacemaker, a biventricular pacemaker consists of a small battery pack and electrical leads, or small wires that conduct electricity to the heart. CRT pacemakers have two or three leads, placed in the upper and lower chambers of the heart. The device measures the contractions of the heart, and if the heart begins to beat out of time it will send small, rhythmic pulses of electricity to resynchronize (hence the name 'cardiac resynchronization therapy) the contractions. This allows the heart to pump blood to the rest of the body more efficiently. Sometimes a CRT is combined with a different kind of device called an implantable cardioverter-defibrillator or ICD, which uses a higher burst of energy to restart the heart if it stops suddenly.

When a biventricular pacemaker is inserted, the wire leads are usually placed via a small incision near the shoulder, then threaded through a vein to the heart. The battery pack is placed under the skin of the chest near the collarbone. Once everything is in place, the leads are connected to the battery, and the CRT can begin helping the heart beat correctly.

It is normal to experience swelling and discomfort as the incisions from surgery heal. It takes time for the heart to adjust to the pacemaker, so vigorous activity should be kept to a minimum for the first few weeks. Strong magnetic fields may affect how the CRT functions, so patients may be advised to avoid them. As patients heart begins to pump blood more effectively, they should soon begin to feel stronger and less fatigued.

Percutaneous Left Atrial Appendage Closure (LAAC)

Percutaneous left atrial appendage closure (LAAC) is a device implantation procedure that reduces the risk of stroke for patients who have atrial fibrillation, a condition in which the heart beats out of rhythm. Atrial fibrillation causes blood to collect in the left atrial appendage, a small sac located in the top left chamber of the heart. The blood that collects in this appendage can form clots and cause stroke when pumped out of the heart.

To implant the device, a long, flexible tube, called a catheter, is inserted into a large vein in the groin and advanced to the heart. Once the tube reaches the left side of the heart, X-ray is used to guide a thinner catheter into the left atrial appendage. The tiny device is then passed through the tube and into the appendage. When the doctor has made sure it is in the right place, she takes the catheter out, and the procedure is completed.

This minimally invasive procedure usually requires a hospital stay of at least one day. Normal activities may be resumed within a few days. About 45 days following implantation, a test will be done to determine whether the device has closed the left atrial appendage. Check-ups have to be performed every year to make sure the device is in place.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Roy Mattathu John, PhD, FRCP, MD treated as a cardiac electrophysiologist in San Jose, CA during 2012 were minimally invasive procedures, cardiac procedures, diagnostic procedures and catheterization.

Volume of procedures performed by Dr. Roy Mattathu John, PhD, FRCP, MD for Medicare patients.

ablation	64
cardiac procedures	275
catheterization	64
diagnostic procedures	82
doctor visit	315
implant surgery	59
implantable cardioverter-defibrillator (ICD) lead extraction	20
implantable cardioverter-defibrillator (ICD) replacement	35
minimally invasive procedures	277
ultrasound (sonogram)	57

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Roy Mattathu John, PhD, FRCP, MD treated as a cardiac electrophysiologist in San Jose, CA during 2013 were minimally invasive procedures, cardiac procedures, catheterization and ablation.

Volume of procedures performed by Dr. Roy Mattathu John, PhD, FRCP, MD for Medicare patients.

ablation	67
cardiac procedures	201
catheterization	67
diagnostic procedures	67
doctor visit	307
implant surgery	65
implantable cardioverter-defibrillator (ICD) lead extraction	16
implantable cardioverter-defibrillator (ICD) replacement	35
minimally invasive procedures	284
ultrasound (sonogram)	57

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD.

**Gender**
Male	230
Female	183

**Ethnicity**
Non-Hispanic White	363
Black	15
Hispanic	20
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	183
From 75 to 84	127
85 and over	54
Less than 65	49

Conditions of Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD in 2013

Hypertension	75
High Cholesterol	65
Stroke	12
Ischemic Heart Disease	62
Depression	23
Chronic Kidney Disease	36
Asthma	9
Osteoperosis	7
Atrial Fibrilation	60
Heart Failure	54
Chronic Obstructive Pulmonary Disease	19
Diabetes	29
Dementia	11
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Roy Mattathu John, PhD, FRCP, MD treated as a cardiac electrophysiologist in San Jose, CA during 2014 were minimally invasive procedures, cardiac procedures, diagnostic procedures and catheterization.

Volume of procedures performed by Dr. Roy Mattathu John, PhD, FRCP, MD for Medicare patients.

ablation	75
cardiac procedures	220
catheterization	75
diagnostic procedures	88
doctor visit	298
implant surgery	57
implantable cardioverter-defibrillator (ICD) lead extraction	18
implantable cardioverter-defibrillator (ICD) replacement	28
minimally invasive procedures	300
ultrasound (sonogram)	63

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD.

**Gender**
Male	238
Female	176

**Ethnicity**
Non-Hispanic White	356
Black	21
Hispanic	20
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	183
From 75 to 84	146
85 and over	38
Less than 65	47

Conditions of Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD in 2014

Hypertension	74
High Cholesterol	63
Stroke	12
Ischemic Heart Disease	65
Depression	23
Chronic Kidney Disease	33
Asthma	11
Osteoperosis	7
Atrial Fibrilation	65
Heart Failure	52
Chronic Obstructive Pulmonary Disease	17
Diabetes	30
Dementia	7
Cancer	14

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Roy Mattathu John, PhD, FRCP, MD treated as a cardiac electrophysiologist in San Jose, CA during 2015 were minimally invasive procedures, cardiac procedures, catheterization and ablation.

Volume of procedures performed by Dr. Roy Mattathu John, PhD, FRCP, MD for Medicare patients.

ablation	78
cardiac procedures	203
catheterization	78
diagnostic procedures	78
doctor visit	233
hospital care	14
implant surgery	60
implantable cardioverter-defibrillator (ICD) lead extraction	19
implantable cardioverter-defibrillator (ICD) replacement	24
inpatient care	14
minimally invasive procedures	300
ultrasound (sonogram)	65

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD.

**Gender**
Male	528
Female	352

**Ethnicity**
Non-Hispanic White	792
Black	40
Hispanic	24
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	416
From 75 to 84	256
85 and over	112
Less than 65	96

Conditions of Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD in 2015

Hypertension	75
High Cholesterol	63
Stroke	12
Ischemic Heart Disease	59
Depression	25
Chronic Kidney Disease	36
Asthma	10
Osteoperosis	7
Atrial Fibrilation	61
Heart Failure	48
Chronic Obstructive Pulmonary Disease	12
Diabetes	30
Dementia	7
Cancer	14

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Roy Mattathu John, PhD, FRCP, MD treated as a cardiac electrophysiologist in San Jose, CA during 2016 were minimally invasive procedures, cardiac procedures, catheterization and ablation.

Volume of procedures performed by Dr. Roy Mattathu John, PhD, FRCP, MD for Medicare patients.

ablation	105
cardiac procedures	247
catheterization	105
diagnostic procedures	105
doctor visit	290
implant surgery	49
implantable cardioverter-defibrillator (ICD) replacement	19
minimally invasive procedures	352
ultrasound (sonogram)	93

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD.

**Gender**
Male	301
Female	215

**Ethnicity**
Non-Hispanic White	447
Black	25
Hispanic	25
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	250
From 75 to 84	169
85 and over	48
Less than 65	49

Conditions of Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD in 2016

Hypertension	75
High Cholesterol	63
Stroke	11
Ischemic Heart Disease	59
Depression	21
Chronic Kidney Disease	35
Asthma	19
Osteoperosis	9
Atrial Fibrilation	59
Heart Failure	46
Chronic Obstructive Pulmonary Disease	15
Diabetes	32
Dementia	9
Cancer	13

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Roy Mattathu John, PhD, FRCP, MD treated as a cardiac electrophysiologist in San Jose, CA during 2017 were minimally invasive procedures, cardiac procedures, ultrasound (sonogram) and catheterization.

Volume of procedures performed by Dr. Roy Mattathu John, PhD, FRCP, MD for Medicare patients.

ablation	45
cardiac procedures	141
catheterization	45
diagnostic procedures	45
doctor visit	93
implant surgery	45
implantable cardioverter-defibrillator (ICD) replacement	20
minimally invasive procedures	186
ultrasound (sonogram)	51

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD.

**Gender**
Male	223
Female	138

**Ethnicity**
Non-Hispanic White	313
Black	19
Hispanic	16
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	165
From 75 to 84	119
85 and over	39
Less than 65	38

Conditions of Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD in 2017

Hypertension	75
High Cholesterol	59
Stroke	12
Ischemic Heart Disease	63
Depression	24
Chronic Kidney Disease	43
Asthma	10
Osteoperosis	4
Atrial Fibrilation	58
Heart Failure	51
Chronic Obstructive Pulmonary Disease	17
Diabetes	31
Dementia	10
Cancer	16

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Roy Mattathu John, PhD, FRCP, MD treated as a cardiac electrophysiologist in San Jose, CA during 2018 were minimally invasive procedures, cardiac procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Roy Mattathu John, PhD, FRCP, MD for Medicare patients.

ablation	31
cardiac procedures	103
catheterization	31
diagnostic procedures	31
doctor visit	148
hospital care	58
implant surgery	36
implantable cardioverter-defibrillator (ICD) replacement	14
inpatient care	58
minimally invasive procedures	134
ultrasound (sonogram)	36

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD.

**Gender**
Male	127
Female	59

**Ethnicity**
Non-Hispanic White	166
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	86
From 75 to 84	63
85 and over	15
Less than 65	22

Conditions of Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD in 2018

Hypertension	75
High Cholesterol	73
Stroke	8
Ischemic Heart Disease	71
Depression	21
Chronic Kidney Disease	53
Asthma	0
Osteoperosis	0
Atrial Fibrilation	54
Heart Failure	70
Chronic Obstructive Pulmonary Disease	24
Diabetes	41
Dementia	10
Cancer	15

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Roy Mattathu John, PhD, FRCP, MD treated as a cardiac electrophysiologist in San Jose, CA during 2019 were minimally invasive procedures, cardiac procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Roy Mattathu John, PhD, FRCP, MD for Medicare patients.

ablation	30
cardiac procedures	106
catheterization	30
diagnostic procedures	30
doctor visit	83
hospital care	64
implant surgery	56
implantable cardioverter-defibrillator (ICD) replacement	15
inpatient care	64
minimally invasive procedures	136
ultrasound (sonogram)	20

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD.

**Gender**
Male	377
Female	286

**Ethnicity**
Non-Hispanic White	503
Black	70
Hispanic	33
Asian	32
Other	25
Native American	0

**Age**
From 65 to 74	215
From 75 to 84	224
85 and over	156
Less than 65	68

Conditions of Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD in 2019

Hypertension	75
High Cholesterol	75
Stroke	17
Ischemic Heart Disease	75
Depression	30
Chronic Kidney Disease	64
Asthma	12
Osteoperosis	8
Atrial Fibrilation	43
Heart Failure	63
Chronic Obstructive Pulmonary Disease	26
Diabetes	48
Dementia	25
Cancer	14

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Roy Mattathu John, PhD, FRCP, MD treated as a cardiac electrophysiologist in San Jose, CA during 2020 were minimally invasive procedures, cardiac procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Roy Mattathu John, PhD, FRCP, MD for Medicare patients.

ablation	40
cardiac procedures	103
catheterization	40
diagnostic procedures	40
doctor visit	81
hospital care	50
implant surgery	38
implantable cardioverter-defibrillator (ICD) replacement	11
inpatient care	50
minimally invasive procedures	143
ultrasound (sonogram)	25

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD.

**Gender**
Male	468
Female	353

**Ethnicity**
Non-Hispanic White	607
Black	79
Hispanic	0
Asian	54
Other	42
Native American	0

**Age**
From 65 to 74	257
From 75 to 84	286
85 and over	217
Less than 65	61

Conditions of Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD in 2020

Hypertension	75
High Cholesterol	75
Stroke	19
Ischemic Heart Disease	75
Depression	24
Chronic Kidney Disease	58
Asthma	9
Osteoperosis	9
Atrial Fibrilation	43
Heart Failure	54
Chronic Obstructive Pulmonary Disease	20
Diabetes	49
Dementia	25
Cancer	16

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Roy Mattathu John, PhD, FRCP, MD treated as a cardiac electrophysiologist in San Jose, CA during 2021 were hospital care, inpatient care, minimally invasive procedures and cardiac procedures.

Volume of procedures performed by Dr. Roy Mattathu John, PhD, FRCP, MD for Medicare patients.

ablation	40
cardiac procedures	96
catheterization	40
diagnostic procedures	40
doctor visit	127
hospital care	146
implant surgery	33
inpatient care	146
minimally invasive procedures	136
ultrasound (sonogram)	23

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD.

**Gender**
Male	322
Female	238

**Ethnicity**
Non-Hispanic White	397
Black	54
Hispanic	39
Asian	40
Other	0
Native American	0

**Age**
From 65 to 74	174
From 75 to 84	219
85 and over	115
Less than 65	52

Conditions of Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD in 2021

Hypertension	75
High Cholesterol	75
Stroke	16
Ischemic Heart Disease	75
Depression	27
Chronic Kidney Disease	61
Asthma	11
Osteoperosis	7
Atrial Fibrilation	43
Heart Failure	64
Chronic Obstructive Pulmonary Disease	24
Diabetes	51
Dementia	24
Cancer	15

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Roy Mattathu John, PhD, FRCP, MD treated as a cardiac electrophysiologist in San Jose, CA during 2022 were minimally invasive procedures, cardiac procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Roy Mattathu John, PhD, FRCP, MD for Medicare patients.

ablation	34
cardiac procedures	53
catheterization	34
diagnostic procedures	34
doctor visit	223
hospital care	41
implant surgery	19
inpatient care	41
minimally invasive procedures	87

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD.

**Gender**
Male	322
Female	269

**Ethnicity**
Non-Hispanic White	352
Black	0
Hispanic	72
Asian	111
Other	34
Native American	0

**Age**
From 65 to 74	212
From 75 to 84	222
85 and over	91
Less than 65	66

Conditions of Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	20
Ischemic Heart Disease	49
Depression	25
Chronic Kidney Disease	43
Asthma	14
Osteoperosis	21
Atrial Fibrilation	59
Heart Failure	47
Chronic Obstructive Pulmonary Disease	20
Diabetes	43
Dementia	14
Cancer	22

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Roy Mattathu John, PhD, FRCP, MD treated as a cardiac electrophysiologist in San Jose, CA during 2023 were minimally invasive procedures, hospital care, inpatient care and cardiac procedures.

Volume of procedures performed by Dr. Roy Mattathu John, PhD, FRCP, MD for Medicare patients.

ablation	43
cardiac procedures	74
catheterization	43
diagnostic procedures	43
doctor visit	247
hospital care	111
implant surgery	19
inpatient care	111
minimally invasive procedures	117
ultrasound (sonogram)	12

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD.

**Gender**
Male	369
Female	374

**Ethnicity**
Non-Hispanic White	471
Black	22
Hispanic	76
Asian	126
Other	48
Native American	0

**Age**
From 65 to 74	273
From 75 to 84	283
85 and over	111
Less than 65	76

Conditions of Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	15
Ischemic Heart Disease	48
Depression	26
Chronic Kidney Disease	42
Asthma	16
Osteoperosis	24
Atrial Fibrilation	57
Heart Failure	44
Chronic Obstructive Pulmonary Disease	20
Diabetes	40
Dementia	16
Cancer	22

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. Roy Mattathu John, PhD, FRCP, MD for Medicare patients.

The highest averages for the top procedures that Dr. Roy Mattathu John, PhD, FRCP, MD treated as a cardiac electrophysiologist in San Jose, CA were minimally invasive procedures, cardiac procedures, hospital care and inpatient care.

ablation	54
cardiac procedures	151
catheterization	54
diagnostic procedures	56
doctor visit	203
hospital care	69
implant surgery	44
implantable cardioverter-defibrillator (ICD) lead extraction	18
implantable cardioverter-defibrillator (ICD) replacement	22
inpatient care	69
minimally invasive procedures	204
ultrasound (sonogram)	45

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD.

**Gender**
Female	220
Male	292

**Ethnicity**
Black / African American	28
Asian / Pacific Islander	30
Non-Hispanic White	397
Native American / Alaskan Native	0
Hispanic	27
Other	12

**Age**
75 to 84	176
85 and over	83
Less than 65	52
65 to 74	201

Average of Total of Conditions of Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD From 2012 - 2023

The highest averages of the most common conditions of Medicare patients that Dr. Roy Mattathu John, PhD, FRCP, MD treated were hypertension, high cholesterol, ischemic heart disease and atrial fibrilation.

Hypertension	68
High Cholesterol	63
Stroke	12
Ischemic Heart Disease	58
Depression	22
Chronic Kidney Disease	42
Asthma	10
Osteoporosis	8
Heart Failure	49
Chronic Obstructive Pulmonary Disease	17
Diabetes	35
Atrial Fibrillation	50
Dementia	13
Cancer	14

Education & Training

Dr. Roy Mattathu John, PhD, FRCP, MD graduated from Government Medical College, Thiruvananthapuram. He completed residency at Pinderfields Hospital. He is certified by the American Board of Internal Medicine, Clinical Cardiac Electrophysiology American Board of Internal Medicine, Cardiovascular Disease American Board of Internal Medicine, Internal Medicine and has a state license in California.

Medical School: Government Medical College, Thiruvananthapuram

Residency: Pinderfields Hospital

Board Certification: American Board of Internal Medicine, Clinical Cardiac Electrophysiology American Board of Internal Medicine, Cardiovascular Disease American Board of Internal Medicine, Internal Medicine

Licensed In: California

Affiliations & Hospitals

Dr. Roy Mattathu John, PhD, FRCP, MD is associated with these hospitals and organizations:

Stanford Health Care

Ratings & Reviews

Dr. Roy Mattathu John, PhD, FRCP, 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. Roy Mattathu John, PhD, FRCP, MD from all over the web to help you find the right in San Jose, CA.

Overall Rating

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Reviews Left On DocSpot

Overall Rating: 5.0 2018-08-31

I am a highly satisfied patient.  Dr. Roy gave me back my life.

General Payments

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

**Payments by Company**
Abbott Laboratories	$48,744 Ensite Cardiac Mapping System $11,382	NO ASSOCIATED PRODUCT $9,647	CRT-Ds $8,703	Quadra Assura CRT Defibrillator $6,664	AVEIR $2,341	Other $10,009
St. Jude Medical, Inc.	$28,134 Electrophysiology $12,302	Electrophysiology (EP) $11,673	CRM $1,971	FlexAbility Ablation Catheter $1,396	Unify Assura $495	Other $296
Medtronic Vascular, Inc.	$15,732 Ablation $4,294	Arctic Front $4,268	Micra $1,512	CryoConsole $784	Claria MRI $232	Other $4,640
Boston Scientific Corporation	$9,157 RESONATE $363	ACCOLADE $338	GENERAL - THERAPIES $318	WATCHMAN $282	EMBLEM S ICD ELECTRODE DELIVERY SYSTEM $227	Other $7,628
Medical Device Business Services, Inc.	$4,767 Carto 3 System $4,767
Other	$3,318 remede System $651	Micra $552	SelectSecure $278	Carto 3 $273	Carto 3 System $142	Other $1,423

**Types of Payments**
Consulting Fee	$44,356
Travel and Lodging	$24,978
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$21,062
Food and Beverage	$16,631
Compensation for serving as faculty or as a speaker for a non-accredited and noncertified continuing education program	$2,625
Other	$200

Research Payments

Dr. Roy Mattathu John, PhD, FRCP, MD has received 31 research payments totaling $364,660.

Biography

Dr. Roy John sees patients in Palo Alto, CA, Pleasanton, CA, and San Jose, CA. His medical specialties are adult cardiology and cardiac electrophysiology (heart rhythm). He speaks Malayalam. Dr. John's clinical interests include WATCHMAN procedure, ventricular tachycardia, and pacemaker. He is professionally affiliated with Stanford Health Care. He attended medical school at Government Medical College, Thiruvananthapuram.

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Dr. Roy Mattathu John, PhD, FRCP, MD

Office Locations

Some issues Dr. Roy Mattathu John, PhD, FRCP, MD can help you with:

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. Roy Mattathu John, PhD, FRCP, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD in 2022

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

2023 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD in 2023

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Average Medicare Patient Data From 2012 - 2023

Average of Total of Conditions of Medicare patients treated by Dr. Roy Mattathu John, PhD, FRCP, MD From 2012 - 2023

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Research Payments

Biography

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