Eugene Byun, MD
Fullerton, CA 92835
- Mission Heritage Medical Group and Affiliated Physicians
- St. Joseph Heritage Medical Group and Affiliated Physicians
- St. Jude Heritage Medical Group and Affiliated Physicians
St. Jude Heritage Fullerton - Cardiology
100 East Valencia Mesa Drive, Suite 206, Fullerton, CA 92835
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About Eugene Byun
Dr. Eugene Byun is a cardiologist in Fullerton, California and is affiliated with St. Jude Medical Center. He received his medical degree from Indiana University School of Medicine and has been in practice for more than 20 years.
Indiana University School of Medicine
1992
Virginia Mason Medical Center
1993
Virginia Mason Medical Center
1995
Harbor UCLA Medical Center
Fellowship
UCI Medical Center
1999
100 East Valencia Mesa Drive, Suite 206
Fullerton, CA 92835
Providence St. Jude Medical Center
Providence St. Joseph Hospital - Orange
Community Reviews
At Providence, we're dedicated to providing you quality, personalized health care. We are constantly striving to optimize your experience.
As part of ensuring you have a positive experience with Providence, our online provider directory includes ratings and patient comments for select providers. More about our survey.
Excellent patient/doctor relationship with this doctor.
Providence Patient
This was a pre-surgical check-up; I was very satisfied by my appointment with Dr. Byun.
Providence Patient
I am very happy and satisfied with my Cardiologist Dr. Eugene Byun's care and service.
Providence Patient
Dr. Byum makes you feel very confident that you are receiving the best possible help. He is very human and you feel safe o his hands. I thank him very much for taking care of my TAVR.
Providence Patient
I was treated with respect
Providence Patient
I'm happy with this Doctor and this clinic. Would recommend them to others.
Providence Patient
I have always been treated very well by Dr Byun. He is a wonderful doctor. His office personnel are always very nice
Providence Patient
Dr Byun is great!
Providence Patient
Well cared for by providers
Providence Patient
Great job thank you
Providence Patient
Every body is very professional
Providence Patient
Dr Byun is terrific glad he is my cardiologist.
Providence Patient
I have full faith in this Dr.
Providence Patient
My visit was with my cardiologist for 6 month checkup which went very well.
Providence Patient
Dr. Byun always listens carefully and explains things in a precise, clear manner.
Providence Patient
Good
Providence Patient
Dr. Eugene Byun is highly recommendable as one of the distinguished cardiologist of Providence-St Jude Medical Center.
Providence Patient
Very professional
Providence Patient
Love Dr Byun
Providence Patient
Excellent cardiologist and by human being. Shared personal stuff as well
Providence Patient
Dr Byun is an excellent provider and I believe he truly cares about me.
Providence Patient
My provider was great. He asked for me to have an Ultrasound and the first appointment is over 2 months away. I am having shortness of breath issues and thought this test should be sooner.
Providence Patient
I am very lucky to have Dr Byun he is a very good heart doctor I have confidence in him and trust him with my heart.
Providence Patient
All well done
Providence Patient
Dr. Byun is great and takes time to answer all my questions and concerns.
Providence Patient
All good
Providence Patient
I appreciate Dr. Byun's expertise and care.
Providence Patient
Very compassionate and easy to talk with.Thank you very much for taking care of me!
Providence Patient
Explains my condition in terms I can understand. Greatly appreciated.
Providence Patient
Everyone was very professional and very caring
Providence Patient
Dr Byun is thoughtful, caring and knowledgeable in his field. A good physician.
Providence Patient
Compassionate and so knowledgeable,Dr Byun
Providence Patient
Dr. Byun has a very calm demeanor. He respectfully listens to you & any concerns you have, answers questions posed & gives the reasons for his answers, reviewed my recent blood work/results & made a change, telling me why he thought the change was indicated, & inquired about my general well being, not just as pertains to this visit & his specialty. He invites questions & is very respectful.
Providence Patient
Dr Byun has been my cardiologist for at least 5 years and is always ready to discuss my test results with my history and physical condition and to make recommendations.
Providence Patient
Dr. Byun is very knowledgeable, helpful and compassionate.
Providence Patient
Dr Byun provides excellent care and medical information.
Providence Patient
I trust Dr. Byun my long time Cardiologist for his expertise and his evaluation and treatment plan.
Providence Patient
Dr. Byun is always prepared, has my information, takes notes, asks me questions, is very thorough, kind, and honest with me. I couldn't ask for a better cardiologist. I am blessed to have my care under his direction.
Providence Patient
I was completely pleased with Dr Byun and his care of me for this procedure
Providence Patient
Great cardiologist - successfully watched over me for 14 years. Good guy !!
Providence Patient
Dr Byun is very caring and thorough-I trust him completely with my care!
Providence Patient
Had a very nice visit and speaking of my concerns with Dr Byun was very comforting for me!
Providence Patient
I've been with St. JUDES for over 30 years and rate it one of the best in the country. Best doctors and care.
Providence Patient
Dr Buyn saved my life and he is the best cardiologist I ever had and the best human being
Providence Patient
Competent, confidence.
Providence Patient
Dr. Byun does an outstanding job in every way to provide for my medical care.
Providence Patient
Dr Byiin is an excellent Dr. And his staff is excellent also
Providence Patient
Excellent experience
Providence Patient
Dr. Byun is an expert cardiologist. He reviewed my most recent labs from [Date] and was alarmed by my high potassium level. He was possibly the first of my providers to review these labs that were ordered by my immunologist, not in the Providence St. Jude's Medical Group. Dr. Byun ordered labs to check for my current potassium level, and to look for any damage done. Fortunately, everything was normal. It seems there should be a way to notify my PCP at St. Jude's any time labs are drawn that show up in Epic/MyChart so that critical issues might be dealt with before they've done damage?
Providence Patient
Dr Byun is amazing! He listens and addresses questions/concerns with compassion and professionalism.
Providence Patient
Everyone is very awesome
Providence Patient
Great Doctor
Providence Patient
Love dr Byun he listens and takes excellent care of his patients
Providence Patient
Dr Byun is very knowledgeable and answers my concerns in a way that's easy for me to understand.
Providence Patient
All of the team at Dr. Byun's office were polite and supportive during my surgery and after-surgery care.
Providence Patient
All good experiences
Providence Patient
I'm convinced that I have an excellent cardiologist whose interested in my wellbeing.
Providence Patient
He recommended a physician for my vascular procedure.
Providence Patient
Very intentive to my concerns and provided clear and understandable feedback to those concerns. Highly, highly recommend Dr. Byun to anyone seeking cardiology care.
Providence Patient
Great health care provider. Love my Dr's
Providence Patient
Dr Byun is a great cardiologist and is very friendly and easy to understand.
Providence Patient
In all the years with St Jude I have never had any bad experiences or services. With all my medical issues and my different doctors, I currently see today, my Cardiologist, Endocrinologist, Internal Medicine, Orthopedic, Rheumatologist, Neurologist, Urologist, Hematology Oncologist, Allergy and Immunologist. Thank you, Doctors, for your patience with me.
Providence Patient
Dr.Byun is concern of my health and give me good advices,I like him to be my doctor.
Providence Patient
Dr Byun is a speciality doctor which survey didn't ask so I checked the box for routine care. I see him every 6 months. He's an excellent physician who is courteous, professional, and answers all my questions. I look forward to my visits with him and the care he provides for me. If I have a question for him the office gets back to me in a timely manner and when tests come back even if their good his office calls me per Dr Brian . In all aspects they are all very professional .
Providence Patient
Everything with Dr. Byun was great. He is an awesome doctor.
Providence Patient
Always a pleasure for the appointment.
Providence Patient
All good
Providence Patient
Great care
Providence Patient
Everything was fine
Providence Patient
All good
Providence Patient
Excellent
Providence Patient
A good meeting with relevant information and answers to my questions.
Providence Patient
He makes you feel good about being there. He explains everything very clearly.
Providence Patient
Dr, Bynum is the best I have had. Takes his time and really explains issues and preventions with you. He really cares to give me the very best visit as possible. Very professional!
Providence Patient
Dr. Byun is and has always been one of my most favorite Doctors. He is attentive, personable , courteous and always addresses any of my inquiries or needs. I feel I have the best Cardiologist and I am very appreciative. He is the best.
Providence Patient
Seemed very busy
Providence Patient
Always great care
Providence Patient
Very caring and concerned
Providence Patient
Good!
Providence Patient
I WAS HAPPY WITH THE APPOINTMENT
Providence Patient
Great
Providence Patient
Dr. Byun is very thorough, personable, and explanations are clear.
Providence Patient
He is professional, knowledgeable and friendly.
Providence Patient
Good experience
Providence Patient
Dr. Byun has taken care of me since my heart attack in 2011. Would not want to go to any other for this type of care.
Providence Patient
Dr Byun is one of the best doctors I've ever had and I can speak very highly of him
Providence Patient
Very caring and understands my needs. Knowledgeable and supportive.
Providence Patient
All my Doctor's and their Staff members provided excellent care for me. They listen and explain to me until I understand. They're all AWESOME!
Providence Patient
Dr Byun is my cardiologist. I have received excellent care from him in all aspects and I truly feel he is concerned and supportive of my health and well-being. He handled my emergency care after I suffered a heart attack three years ago and I cannot thank him, or St Jude, enough for the care and treatment I received then. With my ensuing rehab and followup care, Dr Buyen has provided excellent support, providing information, ordering tests, and making sure I understand my medical condition and progress.
Providence Patient
Dr. Byun listens and does appropriate testing. He explains results and how to proceed. I had several doctors in past years that did none of that and I, therefore, really appreciate Dr. Byun.
Providence Patient
Appreciate Dr Byun. He cares.
Providence Patient
Dr. Byun is always willing to listen to all my concerns about my hart issues. He spents time discussing and answering all my questions and concerns. He is a very good Dr. In my opinion.
Providence Patient
I have seen this provider for 20 years and have total confidence in him.
Providence Patient
Dr. Byun is a great doctor. He is my doctor and also my husbands doctor. We are both very happy with him.
Providence Patient
Excellent care as usual. Friendly staffFirst class doctor
Providence Patient
He was late for appt. But I understand why - he takes the time to listen and council
Providence Patient
Dr. Byun is always very courteous, professional and informative at all my visits. My visits are always worth while. He takes very good care and answers any questions that arise.
Providence Patient
Doctor Byun is great!
Providence Patient
Love Dr. Byun
Providence Patient
Dr. Byun always listens and answers my questions clearly.
Providence Patient
Dr Byun is a great listener and takes very good care of me.
Providence Patient
All good.
Providence Patient
Dr Byun is the best.
Providence Patient
Dr Byun has always taken care of my medical needs in a very professional manner. I am most greatful to his attention to family history and proceedures that were warranted. His professional and knowledgable care has been extremely welcomed.
Providence Patient
Dr. Byun is always thorough in his assessing my health. He advises me and always listens to my concerns and questions. He is a wonderful doctor and I appreciate everything about him.
Providence Patient
Easy to talk to and answers all my questions. Cares about me and not just my heart.
Providence Patient
Everything was handled very well
Providence Patient
Good
Providence Patient
Everything was fine
Providence Patient
All good. My appointments to see this provider are made before I leave his office so no delays there. Appointments are hard to get with dermatology.
Providence Patient
They're the best . .I have no complaints
Providence Patient
Dr. Byun and staff are always very caring and professional. Dr. Byun was there for for me at a very critical time in my life.
Providence Patient
Dr. Byun is an excellent doctor who is also caring and empathetic to his patient. His staff is courteous and respectful as well.
Providence Patient
Dr. Byun a great doctor. Could not ask for anything better
Providence Patient
Always very good
Providence Patient
No bad experiences ever
Providence Patient
Dr. Byun always listens to my updates and answers all my questions. He is always patient and keeps me informed of my cardiac status!! A great cardiologist!!
Providence Patient
Excellent treatment from the moment I walked through the door, from office staff and provider.
Providence Patient
They always meet or exceed my expectations
Providence Patient
Doc listened and provided lots of pertinent, helpful info
Providence Patient
All care has been wonderful
Providence Patient
Dr Byun was very helpful and as my new cardiologist spent the time to get to know me and my medical Issues, He Is an excellent doctor.
Providence Patient
I am happy and satisfied with the service and attention I am receiving .
Providence Patient
Dr Byun is personal and shows concern We appreciate him and his team
Providence Patient
Dr. Buyn and his staff are awesome, very thankful he is my Doctor!
Providence Patient
Dr. Byun is a terrific doctor. He has taken excellent care of me for several years. I highly recommend him to anyone who needs a cardiologist.
Providence Patient
Excellent Medical Care!
Providence Patient
Dr Byun is a wonderful cardiologist - cares about his patients and gives great medical advice. My two brothers are also under his superb care!
Providence Patient
Your system works quite well, thank-you, much appreciated.W/o Dr Byun skill and expertise, I would not be around to respond to this or any other survey!
Providence Patient
Dr. Byun is unequivocally the BEST!!!
Providence Patient
If I have a question for Dr. Byun, I use the MyChart app. He responds quickly.
Providence Patient
Dr Byun is always willing to discuss my concerns and seems to be interested in all aspects of my medical care.
Providence Patient
My experience with this provider and his team has always been excellent.
Providence Patient
I have received great care
Providence Patient
I have been with Dr. Byun since 2011 and thank God he was at the hospital at the time I had my heart attack. God willing I will stay with him for the remainder of my life.
Providence Patient
Great staff and provider!
Providence Patient
Attentive listener, answer are clear and direct, pragmatic,
Providence Patient
Awesome experience always with the medical team.
Providence Patient
Excellent visit. Doctor explained everything in detail and easy to understand. Answered all my questions and took the time to make sure I understood the answers. Did not try to rush me through, took the time to make sure all my questions and issues were thoroughly answered and dealt with.
Providence Patient
Dr Byun is such a great doctor he really has compassion for me to know how to help me with any anxiety I'm having and takes time with our visits to reassure me that he's always there for me with whatever I worry about!! He's a wonderful dr and friend
Providence Patient
Dr. Byun is not taking new patients.
Providence Patient
This was my 1st appointment with my new cardiologist and I was pleased that he was familiar with my heart health. He reviewed the medications I was taking and inquired about recent visits with my PCP and about a recent ER visit.
Providence Patient
Dr Byun is an excellent dr
Providence Patient
Always respectful and attentive.
Providence Patient
Dr.. Byun 1s concern of my health, he is very patience with me ,he is a very good Doctor.
Providence Patient
Dr. Byun is always totally engaged in the topic of the visit and gives his full attention to the diagnosis at hand. Providence is lucky to have such a capable and well-informed physician on staff.
Providence Patient
Always good
Providence Patient
Dr Byan is a great doctor. He comunivats well. And he is nice. No
Providence Patient
My answer to the last question is based on the fact the he is not taking new patients, but if he were, I would definitely recommend him.
Providence Patient
My first visit as my other doctor left Province. I felt Dr. Byun spent a very long time with me and that's so appreciated. His assistant did an ekg and that was a pleasant surprise that Dr always wants one each visit.
Providence Patient
Very satisfied with Dr. Byun.
Providence Patient
Dr. Byun is a good doctor, we have been with him over 10 years, he is very concerning his patient's health.
Providence Patient
Dr. By um was the first physician to treat me the concern I felt I deserved since I was first diagnosed In the emergency room with Afib in early April.
Providence Patient
Always great care, respect
Providence Patient
Very thorough and caring Dr.
Providence Patient
I always have good experiences when I see Dr Byun. A very good doctor
Providence Patient
Enjoy my visit
Providence Patient
Excellent
Providence Patient
Always receive excellent service
Providence Patient
Excellent caregiver with great skills
Providence Patient
I see my labs and tests on MyChart so no need to be notified. I see Dr Byun once a year unless there is a problem.
Providence Patient
Excellent service
Providence Patient
I'm please with the service I received.
Providence Patient
He is very understanding and very caring. I could not ask for a better doctor. I trust him with my life.
Providence Patient
Dr. Byun is the absolute best cardiologist in America. Great doctor, great person. He really takes time to listen and is always vey clear during discussions.
Providence Patient
All my questions were answered. I feek good about the session and the w;ay it ended,
Providence Patient
I like my Doctor, he is very honest
Providence Patient
Dr.Byun is the best.
Providence Patient
Dr Byun is the top in his field along with great bedside manner
Providence Patient
Dr. Byun is the best.
Providence Patient
I LOVE Dr. Byun. He listens well, explains things, and follows up, checking my understanding.
Providence Patient
Clinical Interests
- Abnormal Calcium Score
- Abnormal Coronary Angiography
- Abnormal Stress Test
- Alcohol Septal Ablation
- Anomalies Of The Coronary Artery
- Aortic Valve Disease
- Atherectomy
- Atherosclerosis
- Atherosclerosis Of The Aorta
- Atrial Septal Defect (Asd)
- Atrial Septal Defect (Asd) Closure Device Placement
- Bicuspid Aortic Valve
- Cardiac Angina
- Cardiac Rehabilitation
- Cardiogenic Shock
- Cardiomyopathy
- Carotid Artery Angioplasty
- Carotid Stent
- Chest Pain
- Chronic Total Occlusion
- Claudication
- Congestive Heart Failure (Chf)
- Coronary Angiography
- Coronary Angioplasty
- Coronary Artery Disease
- Coronary Artery Fistula
- Coronary Artery Stent Placement
- Coronary Calcium Scoring
- Directional Atherectomy
- Edwards Sapien Transcatheter Aortic Heart Valve
- Embolic Protection Devices
- Exercise Intolerance
- Extracorporeal Membrane Oxygenation
- Familial Dilated Cardiomyopathy
- Familial Hypertrophic Cardiomyopathy
- Femoral Artery Angioplasty
- Heart Biopsy
- Hypertrophic Cardiomyopathy
- Idiopathic Hypertrophic Subaortic Stenosis
- Intra Aortic Balloon Pump
- Intravascular Ultrasound
- Ischemic Cardiomyopathy
- Laser Atherectomy
- Lithotripsy
- Mechanical Circulatory Support
- Minimally Invasive Aortic Valve Replacement
- Minimally Invasive Mitral Valve Repair
- Mitral Regurgitation
- Mitral Valve Disease
- Mitral Valve Prolapse
- Mitral Valve Regurgitation
- Mitral Valve Stenosis
- Myocardial Infarction (Mi)
- Myocarditis
- Myxoma
- Optical Coherence Tomography
- Paravalvular Leak Repair
- Patent Foramen Ovale
- Patent Foramen Ovale Closure
- Percutaneous Mitral Valve Repair
- Percutaneous Valvuloplasty
- Peripheral Artery Angioplasty
- Peripheral Vascular Diseases
- Prinzmetals Angina
- Pulmonary Artery Stenosis
- Pulmonary Artery Thrombectomy
- Pulmonary Valve Disorders
- Pulmonary Valve Insufficiency
- Pulmonary Valve Stenosis
- Radial Coronary Access
- Refractory Angina
- Replacement Cardiac Valve
- Rheumatic Aortic Regurgitation
- Rheumatic Aortic Stenosis
- Rheumatic Diseases Of Pulmonary Valve
- Rheumatic Heart Disease
- Rheumatic Mitral Regurgitation
- Rheumatic Mitral Stenosis
- Right Heart Catheterization
- Right Heart Failure
- Right Ventricular Hypertrophy
- Rotational Atherectomy
- Shortness Of Breath (Sob)
- Subaortic Stenosis
- Thrombectomy
- Thrombolysis
- Transcatheter Aortic Valve Replacement (Tavr)
- Tricuspid Regurgitation
- Tricuspid Valve Disease
- Valve Stenosis
- Valvular Endocarditis
- Venous Thromboembolism
Dr Buyun is very approachable, friendly, and knowledgable.
Providence Patient