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
Fullerton, CA 92835
St. Jude Heritage Fullerton - Cardiology
100 East Valencia Mesa Drive, Suite 206, Fullerton, CA 92835
Are you covered?
Check to see if your insurance is covered by this provider.
- Health Net - TriCare
- United Healthcare PPO
- Providence Health Plan - Medicare Advantage
- Choice/Humana PPO
- Health Net - Medicare Advantage
- Blue Shield of CA HMO – Trio
- US Family Health Plan - TriCare
- Aetna Medicare Advantage HMO
- United Healthcare HMO
- Health Net HMO
- Blue Shield of CA PPO
- Anthem Blue Cross Medicare PPO
- HealthSmart (Interplan) PPO
- Coventry/First Health PPO
- Vivity by Anthem Blue Cross
- Aetna Medicare Advantage PPO
- Aetna HMO
- Anthem Blue Cross Medicare Advantage
- United Healthcare, Medicare Advantage
- Anthem Blue Cross HMO
- Health Net PPO
- Multiplan PPO
- Cigna HMO
- Blue Shield of CA HMO
- SCAN Medicare Advantage
- Cigna PPO
- Blue Shield of CA Medicare Advantage
- Anthem Blue Cross PPO
- Aetna PPO
- No results found
Please contact your insurance provider to verify coverage.
You're not covered
Unfortunately, this provider doesn’t accept your insurance or plan.Don’t worry, we can help you find other providers who do.
View More Providers
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
- American Board of Internal Medicine, Interventional Cardiology
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.
Love my doctors
Providence Patient
I have used this care provider for over 30 years. Had cancer operation, 3 pace makers, emergency room treatments and have never been disappointed with the service I received. This facility has a lot going for it. My only complaint is having to pay for parking. There should be a section for free handicap parking.
Providence Patient
Dr. Byun is very present during my visits. Always has a response to my concerns.
Providence Patient
He is very caring, very knowledgeable, give me good advise, he is a very good doctor and I am very happy to have him for my doctor.
Providence Patient
Dr Byun is an excellent doctor and understands what I want and need.
Providence Patient
Great experience.
Providence Patient
All positives----
Providence Patient
Dr is a great provider of care and concern. He has a great understanding and interest in my condition and a very good attitude.
Providence Patient
Dr. Byun is an excellent doctor. He is personable, friendly and courteous. He demonstrates compassion. He explains tests results and the reasons for medications he prescrives. I needed this appointment to check my pacemaker and get pre-op clearance for carpal tunnel surgery. Dr. Byun 's staff rmoved up be previously scheduled routine pacemaker check and cardiac appoitnment so I could get my pre-op appointment for cardio clearance. Without this appointment my surgery date would have been post[poned for another month. Dr. Byun completed all forms needed for my surgery clearance.Dr. Byun treats me with respect. He answered all questions from me and my daughter who came with me to this appointment.
Providence Patient
I am well satisfy with the care I get from this provider
Providence Patient
Dr., Nurses, an all Receptionists were very helpful, respectful, thoughtful a very kind, an I would recommend them all very highly!! Highly!!
Providence Patient
Dr. Byun always listens to my questions and answers in a way that I understand. Very patient and professional. Could not ask for anyone better.
Providence Patient
Doctor always spends more time with me than any other doctor. Really care regarding my healthcare!
Providence Patient
I am one happy patient because Dr.Byun is ready to answer any question while I in his office.
Providence Patient
Dr.Byun always greets me and my family with a smile. Always approaches my health circumstances with positivity and genuine concern. Listens very attentively to any questions asked by me or a family member and takes the time to give thoughtful and easy to understand responses. My health has improved under his care and I trust fully in his direction for managing my health issues. We are very thankful for his ability to perform his responsibilities with such professionalism while still being a very open and approachable person.
Providence Patient
Always good experiences with Dr. Byun.
Providence Patient
Thank you
Providence Patient
Dr Byun is my cardiologist. He was helpful to ease my concerns about issues I was having.
Providence Patient
I am very happy with Dr Byun and Dr Santos
Providence Patient
Dr. Byun is one of the most understanding and caring doctors I have! Besides knowledgeable and making sure that I understand what he says.. So caring!! I am so blessed he is my doctor! I LOVE DR. BYUN!!!!
Providence Patient
Excellent care from Dr. Byun
Providence Patient
Dr. Byun always gives me a lot of time to review and discuss my heart health.
Providence Patient
Dr Bryan always spends time and answers all my questions.
Providence Patient
Dr. Byun was very patient in listening to my other health concerns and gave appropriate recommendations. He listens to what we should proceed with my plan of care.
Providence Patient
Dr Byun and team are friendly, courteous and professional.
Providence Patient
Outstanding Hospital!
Providence Patient
The very best doctor.
Providence Patient
Dr. Byun is an excellent listener. He shows care and respect. I am happy to be one of his patients.
Providence Patient
Very good, profesional
Providence Patient
Very pleased
Providence Patient
Dr Byun is awesome
Providence Patient
Awesome provider
Providence Patient
Dr. Byun has always shown nothing but great care and concern about my health and well being.
Providence Patient
"Bedside manner" and empathy. Caring and concern!
Providence Patient
Felt cared about
Providence Patient
Dr Byun is a great doctor. I always feel comfortable and confident that he has my health and is trying to help with my condition
Providence Patient
Dr Byun is consistently caring and informative. He's the best!
Providence Patient
Dr. Eugene Byun is a excellent doctor.
Providence Patient
Dr. Byun has a great bedside manner. He makes you feel at home. Gives you plenty of time.
Providence Patient
Wait time was excessive but I get great care from Dr Byun and his staff
Providence Patient
Always attentive and concerned about my health.
Providence Patient
Dr Byun is a very good doctor A very caring doctor
Providence Patient
Always have been treated very kindly.
Providence Patient
Dr. Byun is an excellent Cardiologist. He has taken care of me & my heart for 20 years. He is always caring, asks pertinent questions. I have utmost respect for Dr. Byun, he has gone above & beyond in taking care of my heart. I have recommended Dr. Byun to several friends through the years. Thank you to Dr. Byun & your team. May God bless you!
Providence Patient
Very good
Providence Patient
Dr. Byun always listens and answers all my questions with concern and clarity.
Providence Patient
Dr was very good and explained every question in detail .
Providence Patient
Dr Byun is THE BEST doctor I have ever met. He is so compassionate and understanding of my concern. He is very professional respectful and caring. I couldn't have asked for a better doctor. Thank you doctor Byun for taking such good care of me.
Providence Patient
Dr Byun is the best and I have been seeing him every 6 months since I had my aorta replaced in 2017.
Providence Patient
I have the BEST!
Providence Patient
Dr Byun is extremely polite and helpful. I am very happy to have him as a Cardiologist. Thank you Dr Byun.
Providence Patient
I'm glad he was the doctor that took care of me at the hospital for my heart attack.
Providence Patient
Very good
Providence Patient
Although I had to wait for Dr. It was because his previous patient required a lot of. explanations so I totally understood.
Providence Patient
Dr Buyn saved my life
Providence Patient
I really appreciate Dr Bryan He always listen answer all my questions I never fill rushed always makes me supper Happy His my Doctor!!! He's the Best !!!! All Doctors should learn from Him I sincerely hope you give him feed back from this post He definitely deserves the Recognition
Providence Patient
Very comfortable that Dr. Byun would give me good care if I did have a cardiac event as an emergency
Providence Patient
Excellent
Providence Patient
Very professional and very very through. He takes his time to explain all about my medical history so I am able to understand everything.
Providence Patient
Dr. Byun is very knowledgable and very attentive to my questions.
Providence Patient
Dr. Byun and his staff are awesome!!
Providence Patient
Great provider. Great listener. Great experience.
Providence Patient
Very happy with my Doctor.
Providence Patient
Is ver professional doctor.
Providence Patient
I could not ask for anyone better. They don't come any better!
Providence Patient
Dr. Byun and his entire staff are wonderful, special and awesome people, more importantly very professional.
Providence Patient
Dr. Byun and staff are always thorough and ready to answer any questions I have. I have immense confidence in Dr. Byun. He is very good cardiologist in my opinion.
Providence Patient
All of the team are always very courteous, kind, patient and professional.
Providence Patient
Excellent care
Providence Patient
Wonderful doctor!
Providence Patient
He treated me well, as always
Providence Patient
Always receive excellent care with very courteous treatment at reception desk personnel and medical staff.
Providence Patient
I am happy with Dr Byun, he is concern with my health and give me good advice,
Providence Patient
Dr Byun is an excellent cardiologist - he is caring and very knowledgeable. I have recommended him to my family since we are all in need of a cardiologist. Can't say enough good thing s about Dr Byun - thank you!
Providence Patient
I've been under this providers care 14 yrs now & he's just the best . .likable, caring, listens, patient, professional, thorough, focused,confident, & provides clear answers & explanations. Simply the best . . .I hope he never retires!
Providence Patient
Dr. Byun is very caring and explains all health questions patiently and thoroughly.
Providence Patient
Byun is the Best
Providence Patient
Dr. Byun is the best!!
Providence Patient
He listens carefully
Providence Patient
Requested Dr Byun, my cardiologist, send a letter stating I was cleared for PTNS procedure to DrChristopher Chung at City of Hope in Duarte. Dr. Byun followed up and his staff texted me the next day that the letter was sent to City of Hope. I appreciated Dr Byun's sending the requested letter to City of Hope in a timely manner.
Providence Patient
Had a longer wait for this visit, but my provider offered me plenty of time ask and answer my questions. I didn't feel rushed.
Providence Patient
He is so professional and puts you at ease and answers any and all your questions ! He's reassuring that means alot to me
Providence Patient
Awesome Doctor and team
Providence Patient
Excellent care
Providence Patient
Keep up the good work
Providence Patient
We have 100% confidence in D. Byun in monitoring and treating my heart valve issues
Providence Patient
Dr. Byun is a great doctor. Everything was perfect. Much appreciated.
Providence Patient
Dr Byun is a very thoughtful and caring provider that takes the time and effort to explain the process and shows a genuine feeling of empathy.
Providence Patient
Super knowledgeable in his field!!
Providence Patient
He is pragmatic and direct and I like that. Discusses pros and cons but always say it's up to you when there's options. Pleasant, very informed and always addresses my concerns.
Providence Patient
Great experience
Providence Patient
Dr, Byun is the "BEST"!
Providence Patient
Good job all around
Providence Patient
I have nothing but praise for my doctor
Providence Patient
Always positive experience
Providence Patient
Always intellegent informative answers.
Providence Patient
Maggie the medical assistant was extremely nice and helpful.
Providence Patient
I always enjoy visiting with dr eugene.
Providence Patient
Very good
Providence Patient
Dr. Byan is kind and patient and listens to all questions and concerns, then provides the requested information.
Providence Patient
Dr. Byun is absolutely one of your most efficient, caring professionals I could hope for. Quite frankly, you should be honored to have him on your staff. He is in every respect "The Real Deal ". Lucky Providence St. Jude .
Providence Patient
Dr Byun is an excellent doctor a very caring and compassionate person.
Providence Patient
Dr.Byun is professional, knowledgeable, the best cardiologist
Providence Patient
Doctor Byun is very friendly and compassionate to his patients
Providence Patient
Dr Byun Always takes the utmost care with me.
Providence Patient
Dr. Byun and his staff are always courteous, friendly and dedicated to giving the best health care possible.
Providence Patient
Dr.Byun is a wonderful doctor.. He listens and he cares.
Providence Patient
Provider has concern with the well being of the patient.
Providence Patient
The very best
Providence Patient
Excellent experience. I am very happy with my current physicians.
Providence Patient
Dr. Byun is the best cardiologist in California. He really cares about his patients and always explains all issues clearly. A++++
Providence Patient
All good. I have the utmost confidence in Dr. Byun.
Providence Patient
Everything was excellent
Providence Patient
ALL POSITIVES!
Providence Patient
Dr Buyun is very approachable, friendly, and knowledgable.
Providence Patient
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
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
Thank you Dr. Byun
Providence Patient