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Home > CA Providers > Cardiac Electrophysiologists

Dr. James J. Ong, MD

(5 Ratings)

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

University of California, San Diego (UCSD), School of Medicine

Professional interests include: Holter monitoring, left-sided heart failure, tachycardia (very fast heart rate), and more.

18372 Clark Street Suite 218
Tarzana, CA 91356

(818) 342-5377

Dr. James J. Ong, MD is a cardiac electrophysiologist in Tarzana, CA specializing in cardiac electrophysiology (heart rhythm) and adult cardiology. He graduated from University of California, San Diego (UCSD), School of Medicine. Dr. James J. Ong, MD is affiliated with Providence, Dignity Health, Northridge Hospital Medical Center, the American College of Cardiology, Providence Cedars-Sinai Tarzana Medical Center and numerous medical societies, including the Heart Rhythm Society.

Office Locations

18372 Clark Street Suite 218
Tarzana, CA 91356

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Northridge Hospital Medical Center

32144 Agoura Road Suite 218
Westlake Village, CA 91361

(818) 342-5377

(818) 996-9378

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Some issues Dr. James J. Ong, MD can help you with:

Autoimmune Diseases

An autoimmune disorder happens when the immune system mistakenly attacks the tissues of its own body, causing symptoms of illness. There are more than 80 different types of autoimmune disorders. While some are very rare, others are fairly common. Combined, autoimmune disorders are one of the leading causes of death and disability in the United States, affecting approximately 24 million people.

A properly working immune system identifies foreign substances in the body that might cause illness, such as bacteria and viruses. The immune system then creates antibodies which attack the foreign substances, neutralizing them and keeping the body safe. In people with autoimmune disorders, something goes wrong with this process. For reasons that are not fully understand, the immune system creates antibodies to attack the patient's own tissues.

Symptoms of an autoimmune disorder depend on which tissue is being attacked by the immune system, but common symptoms of autoimmune disease include fever, fatigue, and a general feeling of just not being well. Autoimmune disorders are more common in women than in men, and they may run in families. Autoimmune disorders can affect various parts of the body such as blood vessels, connective tissue, endocrine glands, joints, muscles, red blood cells, skin, and many others.

It is common to have more than one autoimmune disorder at a time. Most are chronic, or life-long illnesses, although they may come and go in flares. Treatment for autoimmune disorders depends on which part of the body is being attacked. For example:

A type 1 diabetic whose pancreas has been damaged will need insulin.
A person with Hashimoto's whose thyroid has been damaged will need replacement thyroid hormones.
Someone with Sjogren's syndrome will need eye drops and mouth rinses to replace tears and saliva.

Many autoimmune disorders of all kinds are treated with immune-suppressing medications, such as corticosteroids (e.g. prednisone) to reduce the effect of the immune system.

Heart Attack

A heart attack is a serious medical event that happens when the blood supplying oxygen to the heart is cut off, usually because of a blockage in an artery. This results in damage or death of part of the heart muscle. The heart can heal, but like any part of the body that was injured it leaves a scar. This scar tissue does not contract effectively, so the ability of the heart to pump is lowered after a heart attack.

A heart attack, sometimes called a myocardial infarction, can happen without warning. However there are certain factors that raise the risk of heart attack. Some of these are:

Age
Gender (most heart attack sufferers are male)
A family history of heart attacks
Smoking
Obesity
High cholesterol
High blood pressure
Diabetes
Unhealthy lifestyle choices (lack of exercise, poor diet, too much alcohol or stress)

Heart attacks typically feel like pain or pressure in the chest that can radiate out to the back, arm, or jaw. Some other symptoms can include fatigue or weakness, shortness of breath, sweating, and nausea.

Treatment aims to increase blood flow to the heart muscle by opening up blocked blood vessels. Medications are sometimes used to dissolve clots in the arteries. Aspirin and other medications such as Plavix can thin the blood and make clots less likely to form. Dilators can widen blood vessels to make room for more blood to flow. Doctors can also use a procedure called catheterization to look at the blood vessels around the heart directly, place stents, or widen vessels using angioplasty. In extreme cases bypass surgery can be used to help blood flow better. After recovery, it is important to lead a healthy lifestyle and take any prescribed medications in order to protect the heart.

Heart Problems

The heart is one of the most important organs in the body. This smooth muscle expands and contracts rhythmically an entire lifetime, pumping blood to the lungs and then to every other cell in the body. When heart problems occur, it becomes difficult for the body to get the nutrients and oxygen it needs via the blood. So while there are a variety of illnesses and disorders that affect the heart, most of them cause weakness, exhaustion and shortness of breath. The most common heart conditions include heart disease, angina, arrhythmia, and valve disorders.

Heart disease is the leading cause of death in the United States for both men and women. This includes coronary artery disease, heart attacks, congestive heart failure, and congenital heart disease. Some conditions, such as genetics, cannot be controlled. But there are many other things one can do to lower their risk for heart disease. Controlling high blood pressure and cholesterol levels, reducing or stopping smoking, exercising more and losing weight if needed, and eating a diet low in sodium can all protect the heart.

Angina is a squeezing type of chest pain that happens when the muscles around the heart don't get enough oxygen. It can be regular or infrequent. Usually, angina is caused by coronary heart disease. However, not all chest pain is angina. Chest pain can also be caused by a lung infection or panic attack, for example, so it is important to have any sudden pain checked.

Arrhythmia is the word for when the heart beats too fast, too slow, or irregularly with skipped beats. It can feel frightening, and depending on the type it can be dangerous, but in most cases arrhythmia is not serious and can be treated. It is very common, especially in older adults.

Heart valve problems can happen in any one of the the heart's four valves that keep blood flowing where it needs to go. Babies can be born with problems in their heart valves, or valves can be damaged by infections. The valves can stiffen and become less mobile, or they can stop closing properly and 'leak' when the heart beats. Valve problems can usually be repaired surgically.

Noteworthy Medicare Patient Procedures Performed by Dr. James J. Ong, MD in 2023

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

Top 5%

By Volume:

cardioversion

elective external cardioversion

By Affordability:

angiogram

peripheral angiogram

In 2023, among providers in related specialties within California, Dr. James J. Ong, MD performed more cardioversion, and elective external cardioversion procedures for Medicare patients than 95% of them and he also had a list price for angiogram (angiography), and peripheral (arm or leg) angiogram that was lower than the list prices billed to Medicare by 95% 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 10%

By Volume:

ablation

cardiac catheter ablation

electrophysiological study and catheter ablation

pulmonary vein isolation

By Affordability:

extremity venogram

venogram

In 2023, among providers in related specialties within California, Dr. James J. Ong, MD performed more ablation, cardiac catheter ablation, electrophysiological study and catheter ablation, and pulmonary vein isolation (PVI) procedures for Medicare patients than 90% of them and he also had a list price for extremity venogram, and venogram 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:

minimally invasive procedures

By Affordability:

cardioversion

elective cardioversion

elective external cardioversion

external cardioversion

In 2012, among providers in related specialties within California, Dr. James J. Ong, MD performed more minimally invasive procedures procedures for Medicare patients than 75% of them and he also had a list price for cardioversion, elective cardioversion, elective external cardioversion, and external cardioversion 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. James J. Ong, MD treated as a cardiac electrophysiologist in Tarzana, CA during 2012 were hospital care, inpatient care, cardiac procedures and minimally invasive procedures.

Volume of procedures performed by Dr. James J. Ong, MD for Medicare patients.

ablation	304
ambulatory monitoring	135
cardiac procedures	788
cardioversion	102
catheterization	152
diagnostic procedures	157
doctor visit	2328
hospital care	1191
implant surgery	76
implantable cardioverter-defibrillator (ICD) replacement	33
inpatient care	993
lab tests	431
minimally invasive procedures	573
outpatient care	81
revision surgery	16
stress testing	38
ultrasound (sonogram)	268
vascular procedures	45

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. James J. Ong, MD treated as a cardiac electrophysiologist in Tarzana, CA during 2013 were hospital care, inpatient care, cardiac procedures and minimally invasive procedures.

Volume of procedures performed by Dr. James J. Ong, MD for Medicare patients.

ablation	262
ambulatory monitoring	165
cardiac procedures	603
cardioversion	83
catheterization	131
diagnostic procedures	131
doctor visit	2453
hospital care	851
implant surgery	58
implantable cardioverter-defibrillator (ICD) replacement	28
inpatient care	770
lab tests	453
minimally invasive procedures	477
outpatient care	69
revision surgery	14
stress testing	25
tilt table test	27
ultrasound (sonogram)	249
vascular procedures	51

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. James J. Ong, MD.

**Gender**
Male	450
Female	314

**Ethnicity**
Non-Hispanic White	627
Black	16
Hispanic	49
Asian	59
Other	13
Native American	0

**Age**
From 65 to 74	261
From 75 to 84	299
85 and over	171
Less than 65	33

Conditions of Medicare patients treated by Dr. James J. Ong, MD in 2013

Hypertension	75
High Cholesterol	68
Stroke	6
Ischemic Heart Disease	68
Depression	21
Chronic Kidney Disease	34
Asthma	11
Osteoperosis	10
Atrial Fibrilation	60
Heart Failure	46
Chronic Obstructive Pulmonary Disease	20
Diabetes	36
Dementia	17
Cancer	13

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. James J. Ong, MD treated as a cardiac electrophysiologist in Tarzana, CA during 2014 were cardiac procedures, hospital care, lab tests and minimally invasive procedures.

Volume of procedures performed by Dr. James J. Ong, MD for Medicare patients.

ablation	226
ambulatory monitoring	142
cardiac procedures	578
cardioversion	53
catheterization	113
diagnostic procedures	113
doctor visit	2450
hospital care	544
implant surgery	37
implantable cardioverter-defibrillator (ICD) replacement	16
inpatient care	336
lab tests	380
minimally invasive procedures	371
outpatient care	103
stress testing	59
tilt table test	17
ultrasound (sonogram)	272
vascular procedures	25

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. James J. Ong, MD.

**Gender**
Male	421
Female	284

**Ethnicity**
Non-Hispanic White	571
Black	0
Hispanic	53
Asian	56
Other	0
Native American	0

**Age**
From 65 to 74	239
From 75 to 84	273
85 and over	165
Less than 65	28

Conditions of Medicare patients treated by Dr. James J. Ong, MD in 2014

Hypertension	75
High Cholesterol	65
Stroke	6
Ischemic Heart Disease	67
Depression	20
Chronic Kidney Disease	32
Asthma	11
Osteoperosis	10
Atrial Fibrilation	57
Heart Failure	45
Chronic Obstructive Pulmonary Disease	18
Diabetes	38
Dementia	13
Cancer	12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. James J. Ong, MD treated as a cardiac electrophysiologist in Tarzana, CA during 2015 were hospital care, cardiac procedures, inpatient care and minimally invasive procedures.

Volume of procedures performed by Dr. James J. Ong, MD for Medicare patients.

ablation	206
ambulatory monitoring	132
cardiac procedures	528
cardioversion	59
catheterization	103
chronic care	92
diagnostic procedures	103
doctor visit	2323
hospital care	600
implant surgery	68
implantable cardioverter-defibrillator (ICD) replacement	36
inpatient care	381
lab tests	235
minimally invasive procedures	374
outpatient care	121
stress testing	35
ultrasound (sonogram)	225
vascular procedures	27

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. James J. Ong, MD.

**Gender**
Male	834
Female	656

**Ethnicity**
Non-Hispanic White	1220
Black	36
Hispanic	90
Asian	122
Other	22
Native American	0

**Age**
From 65 to 74	518
From 75 to 84	554
85 and over	362
Less than 65	56

Conditions of Medicare patients treated by Dr. James J. Ong, MD in 2015

Hypertension	75
High Cholesterol	65
Stroke	8
Ischemic Heart Disease	68
Depression	19
Chronic Kidney Disease	32
Asthma	14
Osteoperosis	12
Atrial Fibrilation	60
Heart Failure	45
Chronic Obstructive Pulmonary Disease	19
Diabetes	36
Dementia	14
Cancer	11

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. James J. Ong, MD treated as a cardiac electrophysiologist in Tarzana, CA during 2016 were cardiac procedures, hospital care, minimally invasive procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. James J. Ong, MD for Medicare patients.

ablation	234
ambulatory monitoring	142
cardiac procedures	594
cardioversion	82
catheterization	117
diagnostic procedures	117
doctor visit	2347
hospital care	500
implant surgery	75
implantable cardioverter-defibrillator (ICD) replacement	18
inpatient care	245
lab tests	254
minimally invasive procedures	428
outpatient care	130
stress testing	24
tilt table test	11
ultrasound (sonogram)	260
vascular procedures	31

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. James J. Ong, MD.

**Gender**
Male	423
Female	317

**Ethnicity**
Non-Hispanic White	617
Black	17
Hispanic	37
Asian	58
Other	11
Native American	0

**Age**
From 65 to 74	257
From 75 to 84	283
85 and over	172
Less than 65	28

Conditions of Medicare patients treated by Dr. James J. Ong, MD in 2016

Hypertension	75
High Cholesterol	64
Stroke	6
Ischemic Heart Disease	68
Depression	19
Chronic Kidney Disease	37
Asthma	20
Osteoperosis	12
Atrial Fibrilation	62
Heart Failure	49
Chronic Obstructive Pulmonary Disease	17
Diabetes	36
Dementia	16
Cancer	10

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. James J. Ong, MD treated as a cardiac electrophysiologist in Tarzana, CA during 2017 were cardiac procedures, hospital care, minimally invasive procedures and lab tests.

Volume of procedures performed by Dr. James J. Ong, MD for Medicare patients.

ablation	186
ambulatory monitoring	156
cardiac procedures	608
cardioversion	85
catheterization	93
diagnostic procedures	93
doctor visit	2545
hospital care	511
implant surgery	73
implantable cardioverter-defibrillator (ICD) replacement	16
inpatient care	262
lab tests	305
minimally invasive procedures	369
outpatient care	125
stress testing	50
tilt table test	14
ultrasound (sonogram)	273
vascular procedures	36

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. James J. Ong, MD.

**Gender**
Male	433
Female	350

**Ethnicity**
Non-Hispanic White	646
Black	14
Hispanic	41
Asian	66
Other	16
Native American	0

**Age**
From 65 to 74	272
From 75 to 84	311
85 and over	176
Less than 65	24

Conditions of Medicare patients treated by Dr. James J. Ong, MD in 2017

Hypertension	75
High Cholesterol	57
Stroke	7
Ischemic Heart Disease	63
Depression	19
Chronic Kidney Disease	38
Asthma	9
Osteoperosis	14
Atrial Fibrilation	61
Heart Failure	46
Chronic Obstructive Pulmonary Disease	16
Diabetes	36
Dementia	13
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. James J. Ong, MD treated as a cardiac electrophysiologist in Tarzana, CA during 2018 were cardiac procedures, hospital care, minimally invasive procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. James J. Ong, MD for Medicare patients.

ablation	154
ambulatory monitoring	128
cardiac procedures	487
cardioversion	71
catheterization	77
diagnostic procedures	77
doctor visit	2275
hospital care	348
implant surgery	45
inpatient care	168
lab tests	228
minimally invasive procedures	278
outpatient care	105
stress testing	38
tilt table test	11
ultrasound (sonogram)	237
vascular procedures	17

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. James J. Ong, MD.

**Gender**
Male	425
Female	354

**Ethnicity**
Non-Hispanic White	647
Black	0
Hispanic	34
Asian	63
Other	23
Native American	0

**Age**
From 65 to 74	284
From 75 to 84	304
85 and over	172
Less than 65	19

Conditions of Medicare patients treated by Dr. James J. Ong, MD in 2018

Hypertension	75
High Cholesterol	68
Stroke	8
Ischemic Heart Disease	60
Depression	18
Chronic Kidney Disease	35
Asthma	8
Osteoperosis	14
Atrial Fibrilation	58
Heart Failure	44
Chronic Obstructive Pulmonary Disease	16
Diabetes	33
Dementia	13
Cancer	14

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. James J. Ong, MD treated as a cardiac electrophysiologist in Tarzana, CA during 2019 were cardiac procedures, minimally invasive procedures, ultrasound (sonogram) and hospital care.

Volume of procedures performed by Dr. James J. Ong, MD for Medicare patients.

ablation	172
ambulatory monitoring	80
cardiac procedures	467
cardioversion	62
catheterization	86
diagnostic procedures	86
doctor visit	2277
hospital care	206
implant surgery	20
inpatient care	64
lab tests	181
minimally invasive procedures	292
outpatient care	74
stress testing	20
tilt table test	12
ultrasound (sonogram)	281
vascular procedures	21

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. James J. Ong, MD.

**Gender**
Male	376
Female	346

**Ethnicity**
Non-Hispanic White	580
Black	13
Hispanic	37
Asian	65
Other	27
Native American	0

**Age**
From 65 to 74	249
From 75 to 84	298
85 and over	159
Less than 65	16

Conditions of Medicare patients treated by Dr. James J. Ong, MD in 2019

Hypertension	75
High Cholesterol	70
Stroke	7
Ischemic Heart Disease	57
Depression	20
Chronic Kidney Disease	35
Asthma	9
Osteoperosis	13
Atrial Fibrilation	60
Heart Failure	43
Chronic Obstructive Pulmonary Disease	16
Diabetes	34
Dementia	11
Cancer	14

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. James J. Ong, MD treated as a cardiac electrophysiologist in Tarzana, CA during 2020 were cardiac procedures, minimally invasive procedures, ultrasound (sonogram) and hospital care.

Volume of procedures performed by Dr. James J. Ong, MD for Medicare patients.

ablation	146
cardiac procedures	264
cardioversion	52
catheterization	73
diagnostic procedures	73
doctor visit	2018
hospital care	157
implant surgery	13
inpatient care	52
lab tests	74
minimally invasive procedures	238
outpatient care	43
ultrasound (sonogram)	178
vascular procedures	17

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. James J. Ong, MD.

**Gender**
Male	336
Female	331

**Ethnicity**
Non-Hispanic White	552
Black	0
Hispanic	28
Asian	58
Other	0
Native American	0

**Age**
From 65 to 74	226
From 75 to 84	284
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. James J. Ong, MD in 2020

Hypertension	73
High Cholesterol	67
Stroke	6
Ischemic Heart Disease	58
Depression	20
Chronic Kidney Disease	35
Asthma	9
Osteoperosis	14
Atrial Fibrilation	61
Heart Failure	43
Chronic Obstructive Pulmonary Disease	14
Diabetes	37
Dementia	11
Cancer	14

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. James J. Ong, MD treated as a cardiac electrophysiologist in Tarzana, CA during 2021 were cardiac procedures, minimally invasive procedures, ultrasound (sonogram) and hospital care.

Volume of procedures performed by Dr. James J. Ong, MD for Medicare patients.

ablation	218
cardiac procedures	460
cardioversion	63
catheterization	109
diagnostic procedures	109
doctor visit	1758
hospital care	222
inpatient care	59
minimally invasive procedures	330
nuclear scan	58
outpatient care	66
stress testing	115
tilt table test	20
ultrasound (sonogram)	236
vascular procedures	11

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. James J. Ong, MD.

**Gender**
Male	370
Female	330

**Ethnicity**
Non-Hispanic White	568
Black	11
Hispanic	29
Asian	64
Other	28
Native American	0

**Age**
From 65 to 74	205
From 75 to 84	326
85 and over	157
Less than 65	12

Conditions of Medicare patients treated by Dr. James J. Ong, MD in 2021

Hypertension	75
High Cholesterol	72
Stroke	9
Ischemic Heart Disease	65
Depression	23
Chronic Kidney Disease	33
Asthma	10
Osteoperosis	14
Atrial Fibrilation	63
Heart Failure	44
Chronic Obstructive Pulmonary Disease	14
Diabetes	36
Dementia	14
Cancer	14

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. James J. Ong, MD treated as a cardiac electrophysiologist in Tarzana, CA during 2022 were cardiac procedures, minimally invasive procedures, ablation and ultrasound (sonogram).

Volume of procedures performed by Dr. James J. Ong, MD for Medicare patients.

ablation	226
cardiac procedures	349
cardioversion	67
catheterization	113
diagnostic procedures	113
doctor visit	2284
hospital care	163
inpatient care	45
minimally invasive procedures	306
nuclear scan	21
outpatient care	66
stress testing	42
ultrasound (sonogram)	194
vascular procedures	15

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. James J. Ong, MD.

**Gender**
Male	418
Female	350

**Ethnicity**
Non-Hispanic White	615
Black	12
Hispanic	31
Asian	76
Other	34
Native American	0

**Age**
From 65 to 74	243
From 75 to 84	346
85 and over	168
Less than 65	11

Conditions of Medicare patients treated by Dr. James J. Ong, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	13
Ischemic Heart Disease	50
Depression	21
Chronic Kidney Disease	27
Asthma	13
Osteoperosis	19
Atrial Fibrilation	75
Heart Failure	38
Chronic Obstructive Pulmonary Disease	19
Diabetes	36
Dementia	8
Cancer	20

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. James J. Ong, MD for Medicare patients.

The highest averages for the top procedures that Dr. James J. Ong, MD treated as a cardiac electrophysiologist in Tarzana, CA were cardiac procedures, hospital care, minimally invasive procedures and inpatient care.

ablation	212
ambulatory monitoring	135
cardiac procedures	520
cardioversion	70
catheterization	106
chronic care	92
diagnostic procedures	106
doctor visit	2278
hospital care	481
implant surgery	51
implantable cardioverter-defibrillator (ICD) replacement	24
inpatient care	306
lab tests	282
minimally invasive procedures	366
nuclear scan	39
outpatient care	89
revision surgery	15
stress testing	44
ultrasound (sonogram)	243
vascular procedures	26

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. James J. Ong, MD.

**Gender**
Male	407
Female	330

**Ethnicity**
Black / African American	10
Asian / Pacific Islander	62
Non-Hispanic White	603
Native American / Alaskan Native	0
Hispanic	39
Other	15

**Age**
75 to 84	298
85 and over	154
Less than 65	20
65 to 74	250

Average of Total of Conditions of Medicare patients treated by Dr. James J. Ong, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. James J. Ong, MD treated were hypertension, high cholesterol, ischemic heart disease and atrial fibrilation.

Hypertension	68
High Cholesterol	61
Stroke	6
Ischemic Heart Disease	56
Depression	18
Chronic Kidney Disease	30
Asthma	10
Osteoporosis	12
Heart Failure	40
Chronic Obstructive Pulmonary Disease	15
Diabetes	32
Atrial Fibrillation	56
Dementia	11
Cancer	12

Education & Training

Dr. James J. Ong, MD graduated from University of California, San Diego (UCSD), School of Medicine. He completed residency at VA Greater Los Angeles Healthcare System. He is certified by the Internal Medicine Internal Medicine (Sub: Cardiovascular Disease) Internal Medicine Sub: Clin Cardiac Electrophysiolog and has a state license in California.

Medical School: University of California, San Diego (UCSD), School of Medicine

Residency: VA Greater Los Angeles Healthcare System (1992)

Board Certification: Internal Medicine Internal Medicine (Sub: Cardiovascular Disease) Internal Medicine Sub: Clin Cardiac Electrophysiolog

Licensed In: California

Affiliations & Hospitals

Dr. James J. Ong, MD is associated with these hospitals and organizations:

Providence

Dignity Health

Northridge Hospital Medical Center

the American College of Cardiology

Providence Cedars-Sinai Tarzana Medical Center

numerous medical societies, including the Heart Rhythm Society

Insurance Information

Please note: Insurance information may change at any time, and the provider may accept your insurance plan even if it is not listed below. Please contact the provider's office to confirm that your insurance is accepted.

Dr. James J. Ong, MD appears to accept the following insurance providers: Humana Medicare Advantage, Anthem Blue Cross HMO, Aetna HMO, CIGNA HMO, Medicare Advantage, Anthem, Blue Shield of California and Health Net Cal MediConnect HMO.

Insurance Accepted by Provider includes:

According to our sources, Dr. James J. Ong, MD accepts the following insurance providers:

Humana Medicare Advantage

Anthem Blue Cross HMO

Aetna HMO

CIGNA HMO

Medicare Advantage

Anthem

Blue Shield of California

Health Net Cal MediConnect HMO

Ratings & Reviews

Dr. James J. Ong, MD has an exceptional overall rating with an average of 4.8 out of 5 stars based on 5 ratings. We collect ratings and reviews of Dr. James J. Ong, MD from all over the web to help you find the right in Tarzana, CA.

4.8

Overall Rating

(5 Ratings)

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General Payments

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

**Payments by Company**
Biosense Webster, Inc.	$22,653 Ablation CathetersAccessories $16,686	Carto 3 System $3,583	Carto 3 $702	OCTARAY MAPPING CATHETER $485	QDOT MICRO Catheter $448	Other $749
Abbott Laboratories	$7,133 Cardiac Mapping System $1,715	Confirm Rx $1,022	Quadra Assura CRT Defibrillator $613	Ensite Cardiac Mapping System $537	Perclose ProGlide suture mediated closure system $443	Other $2,803
Medtronic Vascular, Inc.	$4,259 Arctic Front $1,452	Micra $1,043	Reveal LINQ $366	SelectSecure $312	Cardiac Diagnostics and Monitoring $247	Other $839
Medtronic, Inc.	$3,091 Reveal LINQ $755	LINQ II $242	AZURE XT DR MRI SURESCAN $193	SelectSecure $71	MyCareLink $40	Other $1,790
Boston Scientific Corporation	$2,236 WATCHMAN $558	TACHY GENERATOR $417	Hardware $197	Tachy System $185	GENERAL - TACHY SYSTEMS $125	Other $754
Other	$11,792 XARELTO $2,095	ELIQUIS $1,730	ENTRESTO $693	JARDIANCE $606	Electrophysiology $588	Other $6,081

**Types of Payments**
Food and Beverage	$26,106
Travel and Lodging	$13,372
Consulting Fee	$11,400
Education	$286

Biography

Dr. James Ong is a specialist in adult cardiology and cardiac electrophysiology (heart rhythm). He works in Tarzana, CA and Westlake Village, CA. Dr. Ong (or staff) is conversant in Mandarin, Spanish, and Persian. Dr. Ong's clinical interests include rheumatic heart disease, orthostatic hypotension, and cardiac risk reduction. His hospital/clinic affiliations include Northridge Hospital Medical Center and Providence. After completing medical school at the University of California, San Diego (UCSD), School of Medicine, he performed his residency at VA Greater Los Angeles Healthcare System and a hospital affiliated with the University of California, Los Angeles (UCLA). He is rated 5.0 stars (out of 5) by his patients. Dr. Ong can take several insurance carriers, including Anthem, Blue California, and Aetna. Unfortunately, according to Dignity Health, he is not currently accepting new patients.