Donald J. Mahon, MD
Orange, CA 92868
- Mission Heritage Medical Group and Affiliated Physicians
- St. Joseph Heritage Medical Group and Affiliated Physicians
- St. Jude Heritage Medical Group and Affiliated Physicians
St. Joseph Heritage Orange - Cardiology
1140 West La Veta Avenue, Suite 430, Orange, CA 92868
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About Donald J. Mahon
Dr. Mahon is a cardiologist with special training in invasive and interventional cardiology. He has special expertise in Rotoblator, atherectomy, stent replacement and valuoplasty. He also specializes in the care of patients with pulmonary hypertension and structural heart disease. Dr. Mahon is accepting new general cardiology patients.
Baylor College of Medicine
InternshipBaylor College of Medicine
InternshipUniversity of California
ResidencyUniversity of California
FellowshipUniversity of California
- American Board of Internal Medicine, Cardiovascular Disease
- American Board of Internal Medicine, Internal Medicine
- National Board of Physicians and Surgeons, Internal Medicine
- National Board of Physicians and Surgeons, Cardiology
- National Board of Physicians and Surgeons, Interventional Cardiology
Providence St. Joseph Hospital - Orange
Community Reviews
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Good
Providence Patient
All good ! :)
Providence Patient
Provider always has a positive attitude
Providence Patient
Excellent in all aspects.
Providence Patient
Happy
Providence Patient
I am very pleased with my provider and the practice as a whole.
Providence Patient
Excellent
Providence Patient
I've seen Dr. Mahon for over 20 years and have always felt I was given the best cardiologist possible.
Providence Patient
Dr. MAHON has provided excellent care for me since 1998.
Providence Patient
Dr. Mahon gave clear instructions on when to seek help for my condition.
Providence Patient
I am always very satisfied with the care I receive from Dr. Mahon and his team...........Everyone I have encountered was professional, personable, and helpful. I have every confidence in Dr. Mahon's decisions regarding my care................
Providence Patient
Dr Mahon is respectful, listens carefully, and responds in a way that is easy to understand. I really trust him.
Providence Patient
My check-up with Dr. Mahon was great. We went over my lab results since I started taking Repatha. We also discussed scheduling my next stress test (nuclear cardiology imaging), which his office handled. As In the past, my appointment with Dr. Mahon and his staff was professional, Informative and helpful.
Providence Patient
Dr Mahon has been my cardiologist for several years. Medical care has always been outstanding on all levels.
Providence Patient
Just appreciate all around sevice and care Thank you
Providence Patient
Very thorough and reassuring.
Providence Patient
Dr mahon was a huge help for me on [Date], 2016 AND continues to help me with my heart .
Providence Patient
Good
Providence Patient
Good
Providence Patient
The care was very professional and to the point. He asked good questions, with the goal of making me feel better.
Providence Patient
With the transparency of the medical team, and all of the data on MyChart, I love this practice. You all listen to me and make me feel heard. You talk to me, and not at me. WELL DONE.
Providence Patient
Good doctor
Providence Patient
Dr Mahon took my concerns seriously, and answered my questions, even tho they may not have been 'serious' as they seemed to me. I appreciate Dr Manhon's concern for my feelings. Dr Mahon, I feel is a real asset to his profession and to your Cardiologist Group. Thank You
Providence Patient
He's the best!
Providence Patient
Dr Mahon is extremely knowledgeable, listens. I have complete confidence in him.
Providence Patient
Dr Mahon was kind and patient with me, I have the utmost confidence in my care by Dr Mahon. The office staff were all friendly and patient with me, excellent staff.
Providence Patient
Dr Mahon is one of the best in the business. He saved me from possibly have a major heart problem. I will always be grateful. I recommend him every chance I get.
Providence Patient
Great
Providence Patient
Great care
Providence Patient
Dr Mahon was very helpful explaining all the test results I had questions about and what they mean to me and my condition specifically. He was calming.
Providence Patient
Dr Mahon is outstanding, knowledgeable , and compassionate. I recommend him highly!
Providence Patient
Dr. Mahon is an excellent cardiologist.
Providence Patient
Excellent conversation with Dr Mahon. He is personable and able to communicate my health issues clearly and understandable.
Providence Patient
Excellent
Providence Patient
Very satisfactory
Providence Patient
You guys are the best!
Providence Patient
Dr. Mahon is excellent, caring with very clear explanations!
Providence Patient
Very professional and courteous staff and doctor. Thanks
Providence Patient
Dr. Mahon is very objective, straight to the point, and always keeps the patient's best health interests as his top priority. I believe Dr. Mahon always tells me the truth about my cardiac situation promptly.
Providence Patient
Dr Mahon is very knowledgeable and in tune with the issues. He listens and explains. I feel very safe with him. He is very busy, so I have to make sure I book far ahead.
Providence Patient
I have been a patient of Dr Mahon since Aug [Date] 2023. He is very professional, knowledgeable, and thorough. He was attentive to the issues issues I had....recommended a plan of treatment, and referred me for further work-up with a Vascular Surgeon following a Renal Ultrasound for an Abdominal bruit. I am very confident in the treatment I have received from Dr Mahon, and would not hesitate to recommend him if asked..............
Providence Patient
Very good.
Providence Patient
Dr. Mahon understands my condition, and made a referral to a colleague to consider future options.
Providence Patient
Dr Mahon is an exceptional doctor. We've moved to [Location] County but continue to see him based on his dedication & care.
Providence Patient
Dr is a very busy Cardo Specialist and as limited time per pt need to hire more ,Cardo drs
Providence Patient
I was seen at my appointment time.
Providence Patient
Excellent care
Providence Patient
Good experience, good plan on going forward.
Providence Patient
I had a life threatening condition culminating 1 year ago, I saw this provider- he started medical investigation , it wasnt a problem in his specialty ,after 3 months to diagnose. 2 months to arrange surgery . I am completely recovered now and am working on another medical condition with this provider. I received excellent medical care from everyone. And everything went smoothly and perfectly. I am grateful to be alive and believe if treated somewhere else would not have survived. ( I read the statistics)
Providence Patient
Very good Doctor
Providence Patient
Dr Mahon is my cardiologist and my husbands. He is friendly yet professional, caring and listens attentively. I am always comfortable and relaxed during my time with him If I have questions, he answers in terms I can understand. If I have additional questions after my gisit I can confidently email him and grt a timely response. Highly recommend.
Providence Patient
This provider is a cardiologist, not my primary care provider
Providence Patient
Very helpful Excellent
Providence Patient
Dr Mahon is the best.
Providence Patient
DR MAHON HAS ALWAYS HELPED ME IN MANY WAYS.
Providence Patient
Very good!
Providence Patient
Very professional people
Providence Patient
Excellent Srvice
Providence Patient
The doctor is always response rather than dismissive of health concerns I've raised.
Providence Patient
This particular physician is stellar.
Providence Patient
Takes my unique condition into consideration
Providence Patient
The Best !!!
Providence Patient
Dr Mahon and staff treated me well.
Providence Patient
This was a situation where I needed to get in to see Dr. Mahon ASAP and when I called in on a Monday morning they got me in at 3:00 that afternoon to see Dr. Mahon which I very much appreciated. The staff has always been great and Dr.Mahon always friendly and professional. Dr. Mahon has always responded with a sense of urgency and understands the concerns I have had with my heart ailments. I believe I'm here today because of him.
Providence Patient
All good
Providence Patient
Always provides me with info I need and has for over 25 years. Dr. Mahon is not only on top of my care but is thinking ahead. He is outstanding.
Providence Patient
I have received care from Dr Donald Mahon since May 2002 and I could not be more thankful that he is there for me
Providence Patient
Dr. Mahon has been watching over me and providing excellent care and advice for the past 17 years. I am thoroughly pleased with the concern he has for my heart health and overall well-being.
Providence Patient
Dr Mahon is great
Providence Patient
He's absolutely fabulous and the reason I'm still alive! I've recommended him already to several friends and my daughter also goes to him now!
Providence Patient
Dr. Mahon was incredibly helpful and informative in explaining my test results and discussing our next course of action. He was thorough and made sure I understood what we were discussing. He and his team were very helpful In scheduling all upcoming tests and visits; and contacting my insurance provider to begin the approval process. His Team followed up with me as my insurance coverage approvals were received. My experience was great, but then every visit I've had with Dr. Mahon and his Team has been that way!
Providence Patient
I'm very happy to have Dr Mahon as my doctor.
Providence Patient
All good
Providence Patient
Very professional-friendly-right on point
Providence Patient
Very good provider. Thank you.
Providence Patient
Caring and professional.
Providence Patient
DR. Mahon is very professional and a pleasure to deal with. He is thorough and very clearly explains test results, treatments and responds to any questions that I may have.
Providence Patient
Love Dr Mahon never feel rushed with him. Always goes over everythingmeds.. Options ect. Feel very comfortable with him.
Providence Patient
Dr. Mahon is an ELITE medical professional who blends experience, science and care at the highest level.He has been a trusted source during my build up to surgery.
Providence Patient
Always a solid appointment with Dr. Mahon. Comprehensive and instructional.
Providence Patient
I went in for a stress test for my cardiologist, Dr. Mahon, I already received the results from MyChart. Everything was great. But I am going to see Dr. Mahon tomorrow to discuss all other options I have for the care of my heart.
Providence Patient
I feel like I'm in the best hands with Dr. Mahon
Providence Patient
Dr Mahon office called me and we agreed to change the appointment from a office visit to a phone visit. This was good with me.
Providence Patient
This doctor is very experienced and professional.
Providence Patient
I've been treated by this medial team for over 20 years. I'm very pleased with their care.
Providence Patient
Very relatable and caring
Providence Patient
Good
Providence Patient
Dr. Mahon is one of the finest and most competent doctors I have ever met and he genuinely cares about his patients. I wish more doctors were like him.
Providence Patient
Great patient conversations
Providence Patient
Everything was good, great Doctor
Providence Patient
Dr. Mahon listened to my concerns and answered questions.
Providence Patient
Like Dr Mahon very much. Good care, good bed manners.
Providence Patient
The elevator was broken. Other than that all was well. Thanks
Providence Patient
The Doctor talked to me about my test results.
Providence Patient
I am very confident in this "provider" and the care extended to me.................Excellent care from Dr Mahon and his office staff........
Providence Patient
Seems in a hurry to leave meeting
Providence Patient
Dr Mahon was very clear with the treatment plan going forward.....
Providence Patient
Dr. Mahon Is my Cardiologist , Not my primary care doctor. He is an excellent doctor. I've already referred several patients to him and will continue to do so
Providence Patient
Dr Mahon is outstanding!!!
Providence Patient
Dr Mahon has treated me for 17 years on heart related issue. He has been professional, informative, and empathetic to my issue and I credit him with extending my life during a difficult period. His follow up has been exemplary.
Providence Patient
I've had Doctor Mahon for several years and feel very comfortable with him
Providence Patient
Very good
Providence Patient
I love Dr. Mahon. I have been with him since Febuary [Date] 1996, when he & Dr. Gates literally saved my life. No bad experiences!
Providence Patient
Everyone from the reception to the Dr are always very kind and respectful
Providence Patient
Very good
Providence Patient
He is very intelligent and helpful.
Providence Patient
Excellent provider. Always answers my questions! Staff is excellent!
Providence Patient
Always good. Never had a bad experience.
Providence Patient
I respect Dr Mahon He honest with me always
Providence Patient
We are lucky to have Dr. Mahon
Providence Patient
He gives good care!
Providence Patient
All went very well!
Providence Patient
Very positive experience. Competent, knowledgeable, and professional.
Providence Patient
Dr Mahon is so thorough, I always leave with a positive attitude that he has heard and answered my questions. I feel like I'm in really good hands.
Providence Patient
Very good
Providence Patient
I was happy with the results.
Providence Patient
All very good
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
- Tricuspid Regurgitation
- Tricuspid Valve Disease
- Valve Stenosis
- Valvular Endocarditis
- Venous Thromboembolism
Always feel I am respected when I visit this office
Providence Patient