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Dr. Warren David Johnston, MD

Accepting New Patients
Specializes in: Adult Cardiology
Professional interests include: Holter monitoring, left-sided heart failure, tachycardia (very fast heart rate), and more.
1140 W LA VETA AVENUE SUITE 430
ORANGE, CA 92868

Dr. Warren David Johnston, MD is a cardiologist in ORANGE, CA specializing in adult cardiology. Dr. Warren David Johnston, MD is affiliated with Providence, St. Joseph Heritage Medical Group, Providence Medical Foundation, Providence St. Joseph Hospital - Orange, Saint Joseph Heritage Medical Group and St. Joseph Hospital (Orange).

View Doctor's Full Profile (714) 543-5555

Office Locations

1140 W LA VETA AVENUE SUITE 430
ORANGE, CA 92868
open_in_new

Some issues Dr. Warren David Johnston, 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.

In The News (see more mentions in the news)

“Dr. Warren D. Johnston has been named president of the American Heart Association, Orange County division.”—"Status Update: Concordia president to retire; jobs fair and veterans networking mixer on tap", The Orange County Register, October 2017
“St. Joseph Hospital cardiologists Dr. Warren Johnston (he is the association's board president) and Dr. Larry Santora and their wives opted for the two trips to Dubai, while longtime supporter Sam...”—"Event carries torch for Special Olympics", The Orange County Register, May 2007
“Women often have different symptoms than the crushing chest pain associated with heart attacks, says Dr. Warren Johnston, a member of Cardiology Specialists of Orange County, president of the...”—"Heart woes for women can be painless and lethal", The Orange County Register, February 2007

Noteworthy Medicare Patient Procedures Performed by Dr. Warren David Johnston, MD in 2023

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

Top 5%

By Affordability:

electrocardiogram
stress EKG

In 2023, Dr. Warren David Johnston, MD had a list price for electrocardiogram (EKG), and stress EKG that was lower than the list prices billed to Medicare by 95% of providers in related specialties within California. 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 Affordability:

stress echo

In 2012, Dr. Warren David Johnston, MD had a list price for stress echo that was lower than the list prices billed to Medicare by 75% of providers in related specialties within California. 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. Warren David Johnston, MD treated as a cardiologist in ORANGE, CA during 2012 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. Warren David Johnston, MD for Medicare patients.

cardiac procedures 627
doctor visit 1032
hospital care 147
inpatient care 147
stress testing 225
tilt table test 11
ultrasound (sonogram) 554

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Warren David Johnston, MD treated as a cardiologist in ORANGE, CA during 2013 were cardiac procedures, ultrasound (sonogram), hospital care and inpatient care.

Volume of procedures performed by Dr. Warren David Johnston, MD for Medicare patients.

cardiac procedures 415
doctor visit 1106
hospital care 150
inpatient care 150
stress testing 111
ultrasound (sonogram) 401

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Warren David Johnston, MD.

Gender
Male 427
Female 445
Ethnicity
Non-Hispanic White 647
Black 15
Hispanic 130
Asian 64
Other 16
Native American 0
Age
From 65 to 74 342
From 75 to 84 280
85 and over 175
Less than 65 75

Conditions of Medicare patients treated by Dr. Warren David Johnston, MD in 2013

Hypertension 75
High Cholesterol 73
Stroke 11
Ischemic Heart Disease 51
Depression 14
Chronic Kidney Disease 39
Asthma 7
Osteoperosis 10
Atrial Fibrilation 27
Heart Failure 32
Chronic Obstructive Pulmonary Disease 17
Diabetes 35
Dementia 12
Cancer 15

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Warren David Johnston, MD treated as a cardiologist in ORANGE, CA during 2014 were cardiac procedures, ultrasound (sonogram), hospital care and inpatient care.

Volume of procedures performed by Dr. Warren David Johnston, MD for Medicare patients.

blood draw 25
cardiac procedures 439
doctor visit 1132
hospital care 134
inpatient care 134
stress testing 111
ultrasound (sonogram) 403

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Warren David Johnston, MD.

Gender
Male 431
Female 500
Ethnicity
Non-Hispanic White 725
Black 0
Hispanic 129
Asian 52
Other 0
Native American 0
Age
From 65 to 74 347
From 75 to 84 321
85 and over 184
Less than 65 79

Conditions of Medicare patients treated by Dr. Warren David Johnston, MD in 2014

Hypertension 75
High Cholesterol 72
Stroke 11
Ischemic Heart Disease 56
Depression 20
Chronic Kidney Disease 42
Asthma 10
Osteoperosis 11
Atrial Fibrilation 28
Heart Failure 30
Chronic Obstructive Pulmonary Disease 16
Diabetes 38
Dementia 13
Cancer 15

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Warren David Johnston, MD treated as a cardiologist in ORANGE, CA during 2015 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. Warren David Johnston, MD for Medicare patients.

ambulatory monitoring 15
cardiac procedures 362
doctor visit 975
hospital care 62
inpatient care 62
stress testing 63
ultrasound (sonogram) 347

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Warren David Johnston, MD.

Gender
Male 680
Female 834
Ethnicity
Non-Hispanic White 1154
Black 22
Hispanic 194
Asian 110
Other 34
Native American 0
Age
From 65 to 74 578
From 75 to 84 518
85 and over 314
Less than 65 104

Conditions of Medicare patients treated by Dr. Warren David Johnston, MD in 2015

Hypertension 75
High Cholesterol 75
Stroke 12
Ischemic Heart Disease 54
Depression 20
Chronic Kidney Disease 42
Asthma 15
Osteoperosis 12
Atrial Fibrilation 26
Heart Failure 29
Chronic Obstructive Pulmonary Disease 20
Diabetes 35
Dementia 12
Cancer 16

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Warren David Johnston, MD treated as a cardiologist in ORANGE, CA during 2016 were ultrasound (sonogram), cardiac procedures, stress testing and hospital care.

Volume of procedures performed by Dr. Warren David Johnston, MD for Medicare patients.

blood draw 15
cardiac procedures 348
doctor visit 952
hospital care 64
inpatient care 64
stress testing 64
ultrasound (sonogram) 348

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Warren David Johnston, MD.

Gender
Male 350
Female 412
Ethnicity
Non-Hispanic White 587
Black 11
Hispanic 96
Asian 48
Other 20
Native American 0
Age
From 65 to 74 273
From 75 to 84 272
85 and over 154
Less than 65 63

Conditions of Medicare patients treated by Dr. Warren David Johnston, MD in 2016

Hypertension 75
High Cholesterol 75
Stroke 11
Ischemic Heart Disease 59
Depression 19
Chronic Kidney Disease 46
Asthma 21
Osteoperosis 12
Atrial Fibrilation 24
Heart Failure 30
Chronic Obstructive Pulmonary Disease 20
Diabetes 36
Dementia 13
Cancer 16

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Warren David Johnston, MD treated as a cardiologist in ORANGE, CA during 2017 were ultrasound (sonogram), cardiac procedures, stress testing and hospital care.

Volume of procedures performed by Dr. Warren David Johnston, MD for Medicare patients.

blood draw 11
cardiac procedures 319
doctor visit 1010
hospital care 58
inpatient care 58
stress testing 69
ultrasound (sonogram) 319

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Warren David Johnston, MD.

Gender
Male 437
Female 415
Ethnicity
Non-Hispanic White 645
Black 14
Hispanic 104
Asian 69
Other 20
Native American 0
Age
From 65 to 74 310
From 75 to 84 302
85 and over 170
Less than 65 70

Conditions of Medicare patients treated by Dr. Warren David Johnston, MD in 2017

Hypertension 75
High Cholesterol 73
Stroke 12
Ischemic Heart Disease 57
Depression 21
Chronic Kidney Disease 45
Asthma 9
Osteoperosis 10
Atrial Fibrilation 23
Heart Failure 28
Chronic Obstructive Pulmonary Disease 19
Diabetes 33
Dementia 12
Cancer 14

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Warren David Johnston, MD treated as a cardiologist in ORANGE, CA during 2018 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. Warren David Johnston, MD for Medicare patients.

cardiac procedures 388
doctor visit 950
hospital care 32
inpatient care 32
stress testing 88
ultrasound (sonogram) 375

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Warren David Johnston, MD.

Gender
Male 389
Female 410
Ethnicity
Non-Hispanic White 594
Black 16
Hispanic 112
Asian 57
Other 20
Native American 0
Age
From 65 to 74 281
From 75 to 84 294
85 and over 164
Less than 65 60

Conditions of Medicare patients treated by Dr. Warren David Johnston, MD in 2018

Hypertension 75
High Cholesterol 75
Stroke 11
Ischemic Heart Disease 60
Depression 20
Chronic Kidney Disease 48
Asthma 9
Osteoperosis 11
Atrial Fibrilation 22
Heart Failure 32
Chronic Obstructive Pulmonary Disease 22
Diabetes 35
Dementia 14
Cancer 16

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Warren David Johnston, MD treated as a cardiologist in ORANGE, CA during 2019 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. Warren David Johnston, MD for Medicare patients.

blood draw 17
cardiac procedures 325
doctor visit 897
hospital care 30
inpatient care 30
stress testing 83
ultrasound (sonogram) 310

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Warren David Johnston, MD.

Gender
Male 345
Female 389
Ethnicity
Non-Hispanic White 544
Black 14
Hispanic 106
Asian 52
Other 18
Native American 0
Age
From 65 to 74 278
From 75 to 84 241
85 and over 162
Less than 65 53

Conditions of Medicare patients treated by Dr. Warren David Johnston, MD in 2019

Hypertension 75
High Cholesterol 75
Stroke 9
Ischemic Heart Disease 57
Depression 21
Chronic Kidney Disease 49
Asthma 11
Osteoperosis 12
Atrial Fibrilation 20
Heart Failure 30
Chronic Obstructive Pulmonary Disease 21
Diabetes 33
Dementia 15
Cancer 14

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Warren David Johnston, MD treated as a cardiologist in ORANGE, CA during 2020 were ultrasound (sonogram), cardiac procedures, stress testing and hospital care.

Volume of procedures performed by Dr. Warren David Johnston, MD for Medicare patients.

cardiac procedures 226
doctor visit 701
hospital care 18
inpatient care 18
stress testing 40
ultrasound (sonogram) 226

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Warren David Johnston, MD.

Gender
Male 272
Female 296
Ethnicity
Non-Hispanic White 431
Black 12
Hispanic 79
Asian 27
Other 19
Native American 0
Age
From 65 to 74 198
From 75 to 84 207
85 and over 120
Less than 65 43

Conditions of Medicare patients treated by Dr. Warren David Johnston, MD in 2020

Hypertension 75
High Cholesterol 75
Stroke 9
Ischemic Heart Disease 62
Depression 22
Chronic Kidney Disease 49
Asthma 9
Osteoperosis 11
Atrial Fibrilation 22
Heart Failure 33
Chronic Obstructive Pulmonary Disease 16
Diabetes 29
Dementia 13
Cancer 14

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Warren David Johnston, MD treated as a cardiologist in ORANGE, CA during 2021 were ultrasound (sonogram), cardiac procedures and stress testing.

Volume of procedures performed by Dr. Warren David Johnston, MD for Medicare patients.

cardiac procedures 209
doctor visit 632
stress testing 32
ultrasound (sonogram) 209

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Warren David Johnston, MD.

Gender
Male 309
Female 314
Ethnicity
Non-Hispanic White 450
Black 21
Hispanic 90
Asian 45
Other 17
Native American 0
Age
From 65 to 74 228
From 75 to 84 212
85 and over 115
Less than 65 68

Conditions of Medicare patients treated by Dr. Warren David Johnston, MD in 2021

Hypertension 75
High Cholesterol 75
Stroke 10
Ischemic Heart Disease 61
Depression 22
Chronic Kidney Disease 49
Asthma 10
Osteoperosis 11
Atrial Fibrilation 23
Heart Failure 33
Chronic Obstructive Pulmonary Disease 17
Diabetes 35
Dementia 10
Cancer 15

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Warren David Johnston, MD treated as a cardiologist in ORANGE, CA during 2022 were ultrasound (sonogram), cardiac procedures, stress testing and hospital care.

Volume of procedures performed by Dr. Warren David Johnston, MD for Medicare patients.

blood draw 14
cardiac procedures 164
doctor visit 624
hospital care 18
inpatient care 18
stress testing 20
ultrasound (sonogram) 164

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Warren David Johnston, MD.

Gender
Male 266
Female 259
Ethnicity
Non-Hispanic White 385
Black 0
Hispanic 74
Asian 44
Other 0
Native American 0
Age
From 65 to 74 191
From 75 to 84 209
85 and over 91
Less than 65 34

Conditions of Medicare patients treated by Dr. Warren David Johnston, MD in 2022

Hypertension 75
High Cholesterol 75
Stroke 15
Ischemic Heart Disease 54
Depression 17
Chronic Kidney Disease 39
Asthma 10
Osteoperosis 14
Atrial Fibrilation 38
Heart Failure 29
Chronic Obstructive Pulmonary Disease 19
Diabetes 30
Dementia 8
Cancer 16

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Warren David Johnston, MD for Medicare patients.

The highest averages for the top procedures that Dr. Warren David Johnston, MD treated as a cardiologist in ORANGE, CA were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

ambulatory monitoring 15
blood draw 16
cardiac procedures 347
doctor visit 910
hospital care 71
inpatient care 71
stress testing 82
ultrasound (sonogram) 332

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Warren David Johnston, MD.

Gender
Male 355
Female 388
Ethnicity
Black / African American 11
Asian / Pacific Islander 51
Non-Hispanic White 560
Native American / Alaskan Native 0
Hispanic 101
Other 14
Age
75 to 84 259
85 and over 149
Less than 65 59
65 to 74 275

Average of Total of Conditions of Medicare patients treated by Dr. Warren David Johnston, MD From 2012 - 2022

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

Hypertension 68
High Cholesterol 67
Stroke 10
Ischemic Heart Disease 51
Depression 17
Chronic Kidney Disease 40
Asthma 10
Osteoporosis 10
Heart Failure 27
Chronic Obstructive Pulmonary Disease 17
Diabetes 30
Atrial Fibrillation 23
Dementia 11
Cancer 13

Education & Training

He is certified by the American Board of Internal Medicine, Internal Medicine and has a state license in California.

Board Certification: American Board of Internal Medicine, Internal Medicine

Licensed In: California

Affiliations & Hospitals

Dr. Warren David Johnston, MD is associated with these hospitals and organizations:

Providence
St. Joseph Heritage Medical Group
Providence Medical Foundation
Providence St. Joseph Hospital - Orange
Saint Joseph Heritage Medical Group
St. Joseph Hospital (Orange)

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. Warren David Johnston, MD appears to accept the following insurance providers: Aetna PPO, Aetna HMO, CIGNA PPO, CIGNA HMO, Blue Shield of California, MultiPlan PPO, Medicare Advantage, HealthSmart, Interplan PPO, TriWest, Anthem Blue Cross HMO, Anthem Blue Cross PPO, Health Net PPO, Health Net HMO, Anthem, Coventry PPO, United Healthcare PPO, United Healthcare HMO, US Family Health Plan, Aetna Medicare PPO and CoventryFirst Health PPO.

Insurance Accepted by Provider includes:

According to our sources, Dr. Warren David Johnston, MD accepts the following insurance providers:

Aetna PPO
Aetna HMO
CIGNA PPO
CIGNA HMO
Blue Shield of California
MultiPlan PPO
Medicare Advantage
HealthSmart
Interplan PPO
TriWest
Anthem Blue Cross HMO
Anthem Blue Cross PPO
Health Net PPO
Health Net HMO
Anthem
Coventry PPO
United Healthcare PPO
United Healthcare HMO
US Family Health Plan
Aetna Medicare PPO
CoventryFirst Health PPO

Ratings & Reviews

Dr. Warren David Johnston, MD has an exceptional overall rating with an average of 4.86 out of 5 stars based on 478 ratings. We collect ratings and reviews of Dr. Warren David Johnston, MD from all over the web to help you find the right in ORANGE, CA. 

4.86
Overall Rating
Leave a Review

General Payments

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

Payments by Company
Abbott Laboratories $1,117 THORATEC HEARTMATE 3 LVAS IMPLANT KIT
$425 		CardioMEMS HF System
$185 		HeartMate 3 Left Ventricular Assist Device
$133 		Mitra Clip system
$131 		2ND GEN CENTRIMAG PRIMARY CONSOLE
$125 		Other
$119
Medtronic Vascular, Inc. $733 Micra
$361 		Advisa
$190 		Resolute
$150 		Reveal LINQ
$16 		Amplia MRI
$15
SANOFI-AVENTIS U.S. LLC $733 PRALUENT
$448 		MULTAQ
$286
Amgen Inc. $733 Repatha
$525 		Corlanor
$131
$77
E.R. Squibb & Sons, L.L.C. $643 ELIQUIS
$606 		CAMZYOS
$37
Other $4,294 XARELTO
$474 		BRILINTA
$302 		ELIQUIS
$301 		Pradaxa
$278 		ENTRESTO
$213 		Other
$2,727
Types of Payments
Food and Beverage $8,074
Education $180

Biography

Dr. Warren Johnston practices adult cardiology. His patients gave him an average rating of 5.0 stars (out of 5). Clinical interests for Dr. Johnston include rheumatic heart disease, heart tumor, and cardiac risk reduction. He appears to be an in-network provider for Anthem, Blue California, and HealthSmart, in addition to other insurance carriers. Dr. Johnston studied medicine at the University of Rochester School of Medicine and Dentistry. He has received professional recognition including the following: Southern California Super Doctors. He is affiliated with St. Joseph Heritage Medical Group. According to Providence Medical Foundation, new patients are welcome to contact Dr. Johnston's office in Orange, CA.

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