Overview
Warren Johnston is a Cardiologist in Orange, California. Dr. Johnston is highly rated in 13 conditions, according to our data. His top areas of expertise are Coronary Heart Disease, Atherosclerosis, Angina, and High Cholesterol. Dr. Johnston is currently accepting new patients.
His clinical research consists of co-authoring 1 peer reviewed article. MediFind looks at clinical research from the past 15 years.
Specialties
Licenses
Hospital Affiliations
Languages Spoken
Gender
Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE-MEDICAID PLAN
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
- EPO
- INSURANCE PLAN
- MEDICARE MAPD
- MEDICARE PDP
- OTHER COMMERCIAL
- OTHER MEDICARE
- PPO
- EPO
- HMO
- PPO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
Accepted plan types not found. Please verify directly with the provider.
- HMO
- INDEMNITY
- POS
- PPO
- EPO
- POS
- PPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- OTHER MEDICARE
- POS
- PPO
- HMO
- MANAGED MEDICAID PLAN
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MANAGED MEDICAID
- OTHER MEDICAID
- STATE MEDICAID
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE PART D
- INSURANCE PLAN
- INSURANCE PLAN
- MEDICARE MAPD
- EPO
- HMO
- POS
- PPO
- MEDICARE DISCOUNT CARD
- MEDICARE PDP
- OTHER MEDICARE
- EPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE
- OTHER MEDICARE PART D
Locations
Clinical Research
Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.
Los Angeles Biomedical Research Institute At Harbor-UCLA Medical Cente
Matthew Budoff is a Cardiologist in Torrance, California. Dr. Budoff is highly rated in 26 conditions, according to our data. His top areas of expertise are Coronary Heart Disease, Atherosclerosis, Heart Attack, Hormone Replacement Therapy (HRT), and Heart Bypass Surgery.
Office
Gregg Fonarow is a Cardiologist in Los Angeles, California. Dr. Fonarow is highly rated in 37 conditions, according to our data. His top areas of expertise are Heart Failure, Heart Attack, Atrial Fibrillation, Thrombectomy, and Percutaneous Coronary Intervention (PCI).
Babak Larian Inc.
Michelle Kittleson is a Cardiologist in Beverly Hills,, California. Dr. Kittleson is highly rated in 31 conditions, according to our data. Her top areas of expertise are Heart Failure, Cardiomyopathy, Cardiac Amyloidosis, Heart Transplant, and Stent Placement.
Frequently Asked Questions about Dr. Warren D. Johnston
How do I make an appointment with Dr. Warren D. Johnston?
You can book an appointment with Dr. Warren D. Johnston by calling their office at 714-543-5555. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.
Is Dr. Warren D. Johnston a top-rated expert for Coronary Heart Disease?
MediFind is an objective health platform that identifies experts based on real-world data. Dr. Warren D. Johnston is classified as an Advanced expert for Coronary Heart Disease, meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.
What conditions does Dr. Warren D. Johnston specialize in?
While Dr. Warren D. Johnston is a Cardiology, they have specific expertise in Coronary Heart Disease, Atherosclerosis, and Angina. MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within Cardiology.
Does Dr. Warren D. Johnston participate in research or clinical trials?
Yes. Dr. Warren D. Johnston has published 1 articles and abstracts on conditions like Coronary Heart Disease. You can view a list of Dr. Warren D. Johnston's latest peer-reviewed publications and clinical trial participation on their profile to see if they are active in new treatments.
Does Dr. Warren D. Johnston accept my insurance?
Dr. Warren D. Johnston accepts most major insurance plans, including Aetna and Anthem BCBS. We recommend calling the office directly at 714-543-5555 to verify that your specific plan is currently accepted before your visit.
Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
- Advanced
- AnginaDr. Johnston isAdvanced. Learn about Angina.
- Aortic RegurgitationDr. Johnston isAdvanced. Learn about Aortic Regurgitation.
- Arterial EmbolismDr. Johnston isAdvanced. Learn about Arterial Embolism.
- AtherosclerosisDr. Johnston isAdvanced. Learn about Atherosclerosis.
- CardiomyopathyDr. Johnston isAdvanced. Learn about Cardiomyopathy.
- Carotid Artery DiseaseDr. Johnston isAdvanced. Learn about Carotid Artery Disease.
- Experienced
- Acute Coronary SyndromeDr. Johnston isExperienced. Learn about Acute Coronary Syndrome.
- Adenosine Deaminase 2 DeficiencyDr. Johnston isExperienced. Learn about Adenosine Deaminase 2 Deficiency.
- Aortic Valve StenosisDr. Johnston isExperienced. Learn about Aortic Valve Stenosis.
- ApoplexyDr. Johnston isExperienced. Learn about Apoplexy.
- ArrhythmiasDr. Johnston isExperienced. Learn about Arrhythmias.
- Arterial InsufficiencyDr. Johnston isExperienced. Learn about Arterial Insufficiency.

