Dr. Maron is Director of Preventive Cardiology. He is board certified in internal medicine, cardiovascular disease, and clinical lipidology. He was an undergraduate at Stanford, received his medical degree from University of Southern California, and completed his residency in internal medicine at UCLA. He completed a cardiology fellowship and a research fellowship in cardiovascular disease epidemiology and prevention at Stanford University as a Robert Wood Johnson Clinical Scholar. He was on the faculty at Vanderbilt for 20 years before returning to Stanford in 2014. His research is focused on primary and secondary prevention of coronary artery disease. He has extensive experience in multicenter clinical trials, serving as a member of the Executive Committee and Chair of the Optimal Medical Therapy Committee for the VA-funded COURAGE trial, and now as the PI and Co-Chair of the NHLBI-funded ISCHEMIA trial, and Co-Chair of the NHLBI-funded ISCHEMIA-CKD trial.

Professional Summary

Education & Certifications
  • Medical Education: University of Southern California Keck School of Medicine (1981) CA
  • Fellowship: Stanford University Cardiovascular Medicine Fellowship (1991) CA
  • Residency: Stanford University Internal Medicine Residency (1986) CA
  • Residency: UCLA Medical Center Internal Medicine (1984) CA
  • Board Certification: American Board of Internal Medicine, Internal Medicine (1984)
  • Board Certification: American Board of Internal Medicine, Cardiovascular Disease (1991)


Clinical Trials

Clinical trials are research studies that evaluate a new medical approach, device, drug, or other treatment. As a Stanford Health Care patient, you may have access to the latest, advanced clinical trials.

Open trials refer to studies currently accepting participants. Closed trials are not currently enrolling, but may open in the future.

Practice Locations

Preventive Cardiology Stanford, CA
Stanford, CA

300 Pasteur Drive , 2nd Floor, Room A260

Stanford , CA 94305

(650) 725-5909

Make An Appointment More Clinic Information » Getting Here »

Hypertension Center Stanford, CA
Stanford, CA

300 Pasteur Drive, 1st Floor, Suite A11

Stanford , CA 94305

(650) 723-6961

Make An Appointment More Clinic Information » Getting Here »

Patient Ratings

(9 Ratings)

Overall Rating

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Explanations the care provider gave you about your problem or condition
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Care provider's efforts to include you in decisions about your care
Care provider's efforts to include you in decisions about your treatment
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The Patients Ratings and comments are gathered from our Patient Satisfaction Survey and displayed in their entirety.

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Patient Reviews

(132 reviews)

I met him for the first time during video visit. Ho knows what he is doing.
Excellent explain and easy to understand details
He is fantastic. Truly a top-notch doctor and incredible human being.
Dr. Moran is a caring, supportive, patient, well educated physician. I feel confident and valued in his care. He is a great contributor to Stanford Medicine and the patients he counsels and treats.
Great doctor, very easy to understand, took time to answer all my questions.
Dr Maron is a wonderful physician; both in terms of knowledge as well as his empathy/bedside manner. I feel very fortunate to have been able to spend an hour with him.
I really like him. Very knowledgeable and easy to talk with.
Professional and competent
I appreciated the careful consideration Dr. Maron gave to all aspects of my health issues, as well as making a recommendation for my daughter's management of familial hypercholesterolemia.
Very thorough and clear. He was well prepared and clearly had studied my records and forms. Provided good suggestions and laid out next steps. A very worthwhile experience for me.
I'm so pleased and privileged having Dr. Maron as my provider. Dr. Maron, thank you for being so caring and considerate. Furthermore, I would like to thank Stanford Cardiology group for maintaining such a high standard.
Dr. Maron is a very sensitive and caring doctor with an extensive knowledge in his chosen field of cardiology. I would recommend him to other patients without qualification.
Dr. Maron has saved my life from a potential death due to a heart attack episode and the accompanied internal bleeding symptom in February, 2023. I am greatly grateful for his help and kindness in the time when I was on a total vulnerable and helpless circumstance.
He is absolutely an OUTSTANDING physician, caring, compassionate. Very well informative. He took time to explain and answered questions. Very calm. Very knowledgeable. Provides absolutely excellent CARE. He really represents Stanford as it stands and well known. We are very fortunate to have him as physician. We trust him!! Thank you for having him as Stanford physician. He provides care with PRIDE.
He is fantastic!
Very helpful and an excellent encounter
Excellent and caring MD
Dr. Maron was excellent! Rarely have I ever met a physician who is so compassionate, well-versed in their subject area, and detail-oriented in their note taking and questions. This was one of the best medical sessions I have ever had. Dr. Maron's empathy and care for helping patients was apparent. I am truly grateful for this extraordinary level of care. - Piya Sorcar
He's utterly fantastic. Very patient with questions, explains things really welll, is a true scientist, and clearly cares about his patients.
He is very patient to his patient
Thank you for the very informative visit, doctor!
As a preventative cardiologist, Dr. Maron is wonderful, patient, knowledgeable and attentive. I'd highly recommend Dr. Maron .
Dr. Maron is an excellent doctor who cares about his patients. He is attentive, thoughtful, and a clear communicator. And he is a pleasure to speak with. I have a great respect for him as a medical doctor and a human being.
Dr. Maron is the one of the best doctors I've dealt with. I really like his caring, analysis, recommendations. I very highly recommend him to anyone who has heart issues. His rating is 10+++
Competent and knowledgeable.
I always appreciate how Dr Maron takes time our of his buys day to meet with his patients. He never rushes the appointment and is always thorough. It is clear he cares deeply about his patients’ well-being.
Excellent care
Excellent consultation.Thank you
The best and most compassionate doctor ever
He was prepared for the appointment. He apologized for being slightly late. He had helpful observattions about my condition.
Very comfortable to work with.
Dr. Maron is a consummate professional.
terrific visit. Expert information.
I appreciated his background work on me and the conversational nature of his explanations.
Outstanding, compassionate, caring physician
Thought he gave me useful information and he was quite personable as well. I enjoyed my consult.
Dr Maron was excellent in assessing my current status and discussing path forward. He took the time necessary to address all my questions.
I appreciate the time he took to talk to me about my concerns. I like that he had an alternate plan to offer me
Dr. David Moran provides excellent medical counsel. He is patient, understanding and gets to the core of matters to receive a successful end result. He has assisted me with catapulting my cardiovascular health to a level I haven’t achieved in quite some time. I am very grateful for his knowledge and expertise in navigating me.
Excellent listening skills and advice. Followed up afterwards in person.
Thank you Dr. Maron.
He is an excellent doctor. He's caring, a good listener, and very knowledgeable.
Dr Marin was very patient with my hard hearing problems and extremely thorough considering all issues I had.
Dr. Maron was both professional and friendly, listened carefully, asked questions regarding my comments, explained what some options were and the reasons behind his choice.
Dr Maron is an kind, intelligent, knowledgeable doctor that I am extremely lucky to have as my doctor.
David is an excellent cardiologist. He listens very well and responds clearly and thoroughly to all my questions. I often ask questions about diet or other issues related to cardiac health and he always answers them clearly. I really appreciate how generous he is with his time. I feel I have his full focus and attention. He is very well prepared for my appointment and knows all my relevant personal health details. He is thoughtful kind and warm. I would highly recommend him to anyone I know for his excellence as a cardiologist and his warm thoughtful and kind nature. I feel very fortunate to have him as my cardiologist and always look forward to our appointments.
Dr. Maron was exceptional and a pleasure to work with. His ethic of caring is equaled by his effectiveness in educating me about my condition and the options available to me to treat it. My appointment was a learning experience that will change my life. I truly appreciated Dr. Maron's ability to translate the technical aspects of treatment into a language that I could understand. His nurturing and empathetic demeaner radiated during our video conference as his wealth of knowledge. I am truly blessed to have the opportunity to work with someone of Dr. Maron's expertise in the area of my medical circumstances. He is an excellent doctor and person!
He is good at listening to my concerns, ideas and needs and coming up with info, recommendations and ideas for me. He is patient with me as well.
He is good doctor
Dr. Maron very thoughtful and provides details treatment plan. I feel very fortunate to be among his patients.
Dr. Maron is a thoughtful doctor who cares about his patients.
Excellent meeting and he went out of his way to see me at short notice. Very much appreciated. Impressive session.
Attentive, good bedside care, knowledgeable,
Excellent Doctor, so glad he is my Cardiologist and in charge of my care!
Appears to be a very thoughtful and intelligent human being both patient and informative. Well worth the time.
Dr. Maron is patient, informative, professional and well versed in his craft. It has been a pleasure talking with him about my health.
Very knowledgeable and thorough, clear communicator.
very thorough, engaged, asked questions
Great doctor
He’s a rock star/ guru!
Dr. Moran was professional, patient, articulate and fluid with his knowledge. It was a pleasure meeting with him.
Spectacular. Can’t thank him enough.
I feel very confident in the action plan Dr. Maron provided. I feel more hopeful after our appointment.
Thanks for the excellent, informative visit!
Truly outstanding, a consummate professional, thorough, instructive, responsive and current in the field.
He is #1 in my book. Very down to earth and I love and respect the fact that he is a "preventative" heart doctor.
I am privileged to have Dr. Maron as my cardiologists. Dr. Maron is one of the most caring, honest. and knowledgeable physician......providing the patient the fullest confidence and ease of mind.
I had a pleasant and informative conversation with Dr. Maron. He went over my current lab reports and made excellent recommendations about where, and how I can improve my overall health, both through, exercise, diet as well as medication.
Terrific doc. Very knowledgeable.
Dr. Maron is a phenomenal physician, thoughtful and thorough. He is compassionate and extremely articulate. He is one of the best doctors I have ever had the privilege to see.
Terrific doc. Couldn’t have been better. Very grateful for the consultation.
I don’t know when Ive ever had a doctor as thorough as Dr. Maron. He is knowledgeable, warm, and an excellent communicator. I feel very fortunate to have been referred to him!!!!!
Dr. Maron is a wonderful clinician!
Very excellent experience with Dr. Ramzi Budum and Dr. David Maron. Just exceptional physicians.
Dr. Maron was very informative and had all the information at his disposal to make me comfortable. Well don.
Dr. Maron is world class - brilliant caring. Included me in decision making about care.
Dr. Maron is outstanding. I could not ask for a better cardiologist or a better coach/friend to help me with my condition. He takes a real personable interest and gives all of the time it takes to get me comfortable with any questions or concerns.
Dr. Maron is a fantastic physician. The depth of his knowledge of factors relating to heart disease and his excellent communication skills are why I fly in once a year for a visit.
Drs. Maron & Shoa were superb - they helped me find a path through my unique needs and were deeply respectful of my condition and desired approach.
Dr. Clarke was exceptional in his patience and care, I felt well cared for. Dr. Maron was friendly, patient and direct. A great team.
Dr. Maron is someone I would recommend anytime. He explained everything. In my opinion I give him 5 stars.
Both Dr. Maron and the intern (or resident) were super. The intern was actually my main access point (took hx, did initial evaluation) and Maron confirmed every thing and answered questions.
One of the best most caring doctors I have ever had (Dr. Maron).
Fine, warm doctor. I have total confidence in it's care.
Wonderful, patient, easy to talk to, would recommend to anyone with concerns.
Quite simply the best!
Excellent friendly physician who spent a lot of time counseling.
Dr. Maron is the best.
Dr. Maron is very thorough and patient, and takes the time to address all patient concerns and questions.
Outstanding meeting. Thorough, non-rushed - very comfortable discussion.
He's an excellent dr., gave me time, answer questions and was knowledgeable.
Superb quality time w/Dr. Maron!
I am grateful and very please to meet Dr. Maron. He is a great dr. He is very caring and listen to my concern. I am very happy that he is my dr.
Dr. Maron is a caring, curious engaging, respectful, & highly competent practitioner. I have complete faith & confidence in his medical expertise.
Dr. Maron took time to hear my issues. Didn't feel rushed at all. Had great confidence in him.
Thoroughly enjoyed my time with Dr. Maron. Very thorough and made me feel at ease right from the start.
Dr. Maron was excellent. He took the time to explain everything & made sure I understood the plan. 5 stars.
Dr. Maron was excellent in his communications and understanding of my health issues. Took a great amount of time which was appreciated.
Dr. Maron is the BEST cardiologist I have met with in many years. His knowledge about the research is an added bonus.
Dr. Maron is a rock star!
Dr. Maron was absolutely wonderful! He spent a great deal of time with me and was able to get me in the same day for a scan. This follow up treatment is excellent! I highly recommend him!
Very good experience.
Dr Maron is by far and away the very best physician one could hope for.
Dr. Maron was incredible! It was worth the wait! All excellent.
Appreciate Dr. Maron's pleasant nature.
Dr. Maron is great!!!! Kind, paient, attentive, caring, wonderful "bedside" manner
Very attentive.
Dr. Maron was very patient & kind. Took the time in explaining, did not feel rushed - Walked me out to front desk to check out.
Dr Maron spent an entire hour with us. That never happens. And I see a lot of doctors.
My experience was excellent and it surpass my expectation. If my worries are addressed even more in decision making, the experience would have been perfect.
Dr. Maron is one of the best! Absolutely exemplary.
Would definitely recommend this doctor, best doctors visit I ever had.
He is very very good.
Provider was very friendly & cooperative after an appointment of one week he called personally to find out - how I am feeling etc. - excellent service.
Warm caring, clearly explained new meds and alternatives.
Dr. Maron is a great doctor. I am lucky to know him.
Fantastic. As retired Stanford faculty, I was surprised & pleased by QUANTITY and quality of care.
Very good experience.
Dr. Maron is a gift - great doctor!!
My doctor was very professional.
All excellent!
My experience with Dr. Maron was the best I have had with a doctor at Stanford.
Very, very professional!
Dr. Maron was fantastic. Explained his findings and clearly had reviewed my medical history. Made me feel at ease.

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