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
Orange, CA 92868
St. Joseph Heritage Orange - Cardiology
1140 West La Veta Avenue, Suite 430, Orange, CA 92868
Insurances Accepted
This information provides an overview of accepted insurance plan types. Coverage may vary by specific plan. Please verify your with your insurance provider before visiting us for care.
- TriWest - Tricare
- United HealthCare PPO
- Providence Health Plan - Medicare Advantage
- Blue Shield of CA HMO - Trio
- Health Net - Medicare Advantage
- Health Net PPO
- Cigna HMO
- Aetna PPO
- US Family Health Plan - TriCare
- Anthem Blue Cross Medicare PPO
- Coventry/First Health PPO
- United Healthcare HMO
- HealthSmart (Interplan) PPO
- Blue Shield of CA PPO
- Blue Shield of CA Medicare Advantage
- Anthem Blue Cross HMO
- Anthem Blue Cross Medicare Advantage
- Anthem Blue Cross PPO
- Vivity by Anthem Blue Cross
- Aetna Medicare Advantage PPO
- Blue Shield of CA HMO
- Aetna HMO
- Health Net HMO
- SCAN Medicare Advantage
- Aetna Medicare Advantage HMO
- Multiplan PPO
- Cigna PPO
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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.
- American Board of Internal Medicine, Internal Medicine
- American Board of Internal Medicine, Cardiovascular Disease
- National Board of Physicians and Surgeons, Internal Medicine
Providence St. Joseph Hospital - Orange
Community Reviews
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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.
Very good
Providence Patient
All is good with my Dr.
Providence Patient
Great care!!
Providence Patient
Friendly..
Providence Patient
Dr. Mahon is an excellent physician. He knows my medical history, discussed matters in a friendly and professional manner and provided me vital information as to my status. Thank you.
Providence Patient
Only bad part was that in the waiting room discourteous PATIENTS had their smart phones in speaker mode or were talking loudly into it. Other than that the Staff and Doctor Were excellent and very helpful.
Providence Patient
Dr. Mahon is a caring, considerate, and capable doctor!
Providence Patient
Excellent provider. Highly recommend.
Providence Patient
Pleased with the results.
Providence Patient
Very friendly communication with provider and support from the doctor.
Providence Patient
Very well.
Providence Patient
Shortly after this visit I was hospitalized elsewhere and Dr Mahan responded to personally to my concerns. . . A true professional. I trust him with my life.
Providence Patient
Dr Mahon is very thorough and caring. I admire, trust and like him!
Providence Patient
I feel I can trust him
Providence Patient
Dr Mahon is a great doctor
Providence Patient
So far all experiences have been good with my cardiologist
Providence Patient
Dr Mahon and his staff are above and beyond compare... I feel truly fortunate to have him for a doctor!
Providence Patient
First visit I move to the area , my first visit was impressive.
Providence Patient
I had a very positive experience, with Dr. Mahon and his team.
Providence Patient
Very conscientious office staff and doctor. Very pleased.
Providence Patient
Dr Mahon is an outstanding physician with the highest expertise in his field as well as kindness, compassion, and empathy. I am very happy with my care by Dr Mahon.
Providence Patient
Good
Providence Patient
Very good service from check in to seeing the Doctor to checking out. Everyone was very helpful and professional.
Providence Patient
Always had a good experience.
Providence Patient
All good!
Providence Patient
Very though and caring
Providence Patient
Always treated with respect and courtesy.
Providence Patient
Dr Mahon is one of the most considerate doctors I've ever had. He always answers all of my questions and never makes me feel like I am wasting his time
Providence Patient
Dr. Mahon is categorically etched in stone a Rock Star! Saved my life 8-10 years ago in ERHe always spends the time to completely explain everything
Providence Patient
Excellent service
Providence Patient
Good
Providence Patient
Never had a bad experience. The staff including the doctor are caring and kind, verry professional. Appointment times are just always booked.
Providence Patient
I am very satisfied with the care I received from the Doctor and the office staff.
Providence Patient
Dr Mahon is an outstanding Doctor.
Providence Patient
Dr Mahon is bestest!!
Providence Patient
Dr. Mahan reviewed my records before seeing me in the exam room. He asked pertinent questions. I would have liked more feedback on his observations. His overall conclusion was good news for me. I wished I had prepared more questions for him.
Providence Patient
Dr. Mahon has been my cardiologist since 2001. I could not imagine a more skilled and honorable physician and I am thankful to know him.
Providence Patient
Dr Mahon has overseen my cardiology for about three years. He's listened to my concerns and has adjusted my medication accordingly. He's very easy going, patience and explains well. Most importantly, I trust him.
Providence Patient
This was my initial, new patient visit with Dr. Mahon; he had reviewed my medical records on My Chart (I set up access to all of My Chart portals for all the different medical organizations); he even went to his office to review Chest CT during my visit. Very caring & professional doctor; was great in listening & explaining my condition, & plan of testing (scheduled stress test) and treatment. Scheduled follow up visit; with ability to change appointment earlier, depending on results of upcoming stress test ([Date]). Took all the time need to for any question & concerns. Would recommend this doctor to anyone!
Providence Patient
All good.
Providence Patient
Dr. Mahon is always polite and very helpful. I appreciate his concern for me.
Providence Patient
He is an excellent physician
Providence Patient
Excellent cardiologist.
Providence Patient
Kind of got left hanging about blood work. Also was suggested that we would get a call from ????? When ?????
Providence Patient
Very good
Providence Patient
I Really like Dr Mahon. I've only seen him twice, but I am Extremely Satisfied with him as a Concerned Dr , of my choice! Dr Mahon is Compassionate and takes his time with patients. Also he puts me and my concerns at ease and valued, as a person. I am Very Satisfied with him as my Cardiologist. THANK YOU.
Providence Patient
Dr. Mahon is always so professional and compassionate. He listens and takes his time explaining things to you that you can understand. The only issue with the office is it can take months to get an appointment.
Providence Patient
Very attentive .
Providence Patient
Thank you
Providence Patient
My husband is always treated respectfully and the doctors listen to what we say.
Providence Patient
Good guy
Providence Patient
Dr. Mahon is a great cardiologist.
Providence Patient
Very pleased with Dr. Mahon
Providence Patient
Dr Mahon is a knowledgeable and caring provider.
Providence Patient
Very good
Providence Patient
Very nice
Providence Patient
Dr. Mahon went above and beyond providing excellent care. He was concerned about my health and what procedures and tests were needed. I am very thankful Dr. Donald Manon is my doctor.
Providence Patient
It helps to check in online. Dr. Mahon, staff, and office are polite, friendly, and professional.
Providence Patient
I feel that I have an excellent team of doctors and specialists that work together to provide me the health care I need.
Providence Patient
Outstanding
Providence Patient
Friendly settings.
Providence Patient
I always get great care from Dr. Donald Mahon and his staff.
Providence Patient
All of them are very helpful and courteous
Providence Patient
Not only do I go to see Dr. Mahon but my daughter goes and my granddaughter goes to him also
Providence Patient
Got my test done as soon as possible, I was very thankfull for that.
Providence Patient
Dr Mahon is one of the best doctor I have seen
Providence Patient
Excellent as always.
Providence Patient
Service was professional and excellent.
Providence Patient
I've worked in healthcare for 56 years now and Dr. Mahon is the kindest and smartest doctor I have come across. He saved my life in July 2023 and I will always be grateful!
Providence Patient
Dr. Mahon is very thorough.
Providence Patient
Always takes time to get everything taken care of
Providence Patient
I've always been tread very.well. I really like my Dr. Mahon and his staff.
Providence Patient
I am very satisfied with the care I have received from this provider.
Providence Patient
Dr Mahon is outstanding
Providence Patient
Very friendly and caring doctor
Providence Patient
Great care,super Dr.
Providence Patient
Very good Dr
Providence Patient
Dr. Mahon has been my cardiologist for over 15 years. He has always been professional and provided me with excellent healthcare. He has always listened to my comments/questions and given me answers and opinions that I understand. He has never talked down to me, or over my head. When I leave the exam room I understand the plan we've just discussed. I never leave an appointment wondering what he said, or disagreeing with our course of action. I have recommended him and his staff to my friends.
Providence Patient
I appreciate the excellent care I get from my doc
Providence Patient
All good.
Providence Patient
Always listens, always very though
Providence Patient
Dr. Mahon always is interested in what is happening and is good to reassure you on things that you discuss
Providence Patient
My very life was saved by Dr Mahon in 2013.
Providence Patient
I have received excellent care from this provider.
Providence Patient
Dr. Mahon is the BEST! He always takes time to listen, I completely trust him. I recommend him to all my family and friends. He's just the best!
Providence Patient
Very happy with this doctor and his office staff.
Providence Patient
Visit are always good, informative, questions answered
Providence Patient
Dr Mahon always provides me with excellent care................
Providence Patient
Dr. Mahon is an exceptional cardiologist. And has been got over 25 years. I am grateful to be his patient.
Providence Patient
Dr Mahon is a skilled cardiologist that has taken care of me since 2001.
Providence Patient
I am thankful for Dr Donald Mahon as my Cardiologist and my life and wellbeing is better for it
Providence Patient
Was quick but efficient followup
Providence Patient
Have always been treated with respect, kindness and respect.Have always had a positive experience in this office.
Providence Patient
Dr. Mahon was very helpful and respectful regarding my health care. He follows up as appropriate.
Providence Patient
Dr Mahon seems to care about my health. Thank you
Providence Patient
Attentive to all my concerns
Providence Patient
Not only do I love Dr.Mahon and the Services he performs, but I've got my daughter and my granddaughter going to him also and they love him
Providence Patient
Great job
Providence Patient
Doctor was knowledgeable about my condition, listened to my concerns and modified a medication. He was very patient and kind.
Providence Patient
Detailed and caring
Providence Patient
Very professional, knowledgeable provider. I trust Dr. Mahon's treatment of my condition implicitly.
Providence Patient
During this visit I felt rushed seeing how I was the last patient of the day I spent about 45 minutes in waiting room and when the doctor came in it seemed like I didn't have any time to talk to the doctor about my concerns this time I was very disappointed with the care I received and the fact that I didn't have enough time to talk about anything I was concerned about.
Providence Patient
Dr Mahon has great experience and it shows in how he handled the visit. Very good
Providence Patient
He is a great Dr
Providence Patient
Dr. Mahon listens to my concerns and offers appropriate advice and recommendations.
Providence Patient
Dr. Mahon is fantastic. I Never feel rushed. Answers all my questions.
Providence Patient
Everything went perfectly.
Providence Patient
Excellent health care
Providence Patient
Courteous service from the nursing staff. Dr Mahon always listens to and answers my questions. I always have the feeling that he's there to help me stay well.
Providence Patient
Excellent care and very professional
Providence Patient
Dr Mahon was absolutely amazing in his follow up to my most recent echo cardiogram - he actually proactively called me personally to talk about the results and the fact that he knew due to my cancer chemo treatments that my oncologist would be concerned - he reached out to their office also. I was beyond impressed he took the time to reach out to me directly!
Providence Patient
Great visit as always
Providence Patient
Dr Mahon is an amazing cardiologist, I would be happy to recommend him to anyone seeking a knowledgeable doctor.
Providence Patient
Conditions and Procedures
- 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
Excellent experience as always!
Providence Patient