Dr. Marco Perez's research goal is to better understand the fundamental causes of cardiovascular disease through the study of genetics and epidemiology. His group studies the genetic variations and environmental exposures that are associated with conditions such as atrial fibrillation and heart failure. He has led the studies of atrial fibrillation in Women's Health Initiative, one of the largest nation-wide population-based cohorts. He is currently conducting a large study monitoring for silent or asymptomatic atrial fibrillation in women from the WHI randomized to exercise intervention, and is co-PI in the Apple Heart Study, a clinical trial using the Apple Watch to screen for atrial fibrillation. He is interested in understanding the paradox that atrial fibrillation is less common in African Americans and Hispanics, despite a greater burden of risk factors such as hypertension. As director of the Stanford Inherited Arrhythmia Clinic, he evaluates families with rare inherited arrhythmias associated with sudden death such as Long QT and Brugada Syndromes and explores their links with novel genes. He is particularly interested in studying the genetic causes of very early onset atrial fibrillation. He also studies how best to use the electrocardiogram to identify patients at risk for atrial fibrillation and athletes at risk for life-threatening arrhythmias due to conditions such as hypertrophic cardiomyopathy. His genetic studies have led to the discovery of promising novel therapeutic targets that his group is now studying at a functional level. Dr. Perez receives funding from NIH/NHLBI (R01), Apple Inc., the Weston Havens Foundation, The Stanford Cardiovascular Division and the Stanford SPARK program.

Professional Summary

Professional Education
  • Board Certification: American Board of Internal Medicine, Clinical Cardiac Electrophysiology (2011)
  • Fellowship: Stanford University Medical Center (2010) CA
  • Fellowship: Stanford University School of Medicine (2007) CA
  • Residency: Massachusetts General Hospital (2004) MA
  • Internship: Massachusetts General Hospital (2002) MA
  • Medical Education: Harvard University Health Services (2001) MA
  • Fellowship, Stanford, Electrophysiology (2010)
  • Fellowship, Stanford, Cardiology (2007)
  • Residency, Maassachusetts General Hospital, Internal Medicine (2004)

Honors & Awards
  • Dean's Fellow Research Award, Stanford University (2006-2008)
  • Department of Medicine Teaching Award, Stanford University (2014)
  • Fellow to Faculty Award, American Heart Association (2011-2016)
  • Finalist, FGTB Young Investigator Award, American Heart Association (2013)
  • Harold Amos Faculty Development Award, Robert Wood Johnson Foundation (2012-2016)
  • Loan Repayment Program Award, NIH (20010-2014)
  • National Research Service Award, NIH (2006-2008)
  • R01 Research Project Grant (1R01HL136390-01 ), NIH/NHLBI (2017-2022)
  • SPARK Award, Stanford University (2014-2015)

Administrative Appointments
  • Director, Stanford Inherited Cardiac Arrhythmia Clinic (2013 - Present)
  • Director, Stanford Cardiac Electrocardiography Laboratory (2017 - Present)


Clinical Trials

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

Practice Locations

Cardiac Arrhythmia Service at Palo Alto Stanford, CA
Stanford, CA

300 Pasteur Drive, 2nd Floor

Stanford , CA 94305

(650) 723-7111

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Hypertrophic Cardiomyopathy Center Stanford, CA
Stanford, CA

300 Pasteur Drive , 2nd Floor, Room A260

Stanford , CA 94305

(650) 736-7878

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Stanford Sports Cardiology Stanford, CA
Stanford, CA

300 Pasteur Drive , 2nd Floor, Room A260

Stanford , CA 94305

(650) 736-7878

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Center for Inherited Cardiovascular Disease Stanford, CA
Stanford, CA

300 Pasteur Drive, Heart Clinic 1, Clinic A21

Stanford , CA 94305

(650) 736-7878

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Patient Ratings

(1 Ratings)

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Patient Reviews

(35 reviews)

Everybody did a great job, but especially I would like to mention his Colleen Caleshu and her team.
Dr. Marco Perez is one of the best physicians I've experienced.
Healthcare all around the world was charged drastically over the last 20 years. People became care providers because they had a passion to help others. As a society we do not take good care of ourselves. The need for good, compassionate healthcare providers is at an all time high but there are to many people pursuing healthcare for a career and not because they have a calling. I live in a small town just under 100,000 people and most of the physicians in Chico, CA treat you like cattle than a person. It's because of these experiences many people, like me, do not seek out answers/care to they're HC problems. I've only had 3 appt. @ Stanford and each time I am there I am treated with dignity and respect. To value me, like this, allows me to relax and trust the system Stanford has in place. Keep it up!
Amazing!!! Hard to describe the level of intelligence, kindness and relatability.
Dr. Perez is an excellent physician. I trust him with my care.
Doctor was excellent and spent plenty of time describing my options for future care.
Dr. Perez is outstanding!
Dr. Perez listened to my unusual side effects to medication/Toprol XL. He was considerate and obliging to my request to try to get off med & try a heart monitor (Zio monitor).
Dr. Perez always spends plenty of time with us. Never hurries us.
Dr. Perez is a "10"!
Loved Dr. Perez and his team - I felt very comfortable, and like they truly cared.
Dr. Perez was the very best.
I've the highest respect for the care I've been given by Dr. Marco Perez & his NP Allysone Smith. They are both highly skilled, very friendly & caring, and I can't say enough good about them.
Excellent beyond expectation.
Everything was great but I was told I would get a call to go over lab results and I'm still waiting I send an e-mail and have not heard back. I have the results on "my health" but I don't know or understand what it all means.
Dr. Perez is one of the best, most competent, knowledgeable doctors I have ever visited. He has given me excellent care these last close to 2 yrs. I will miss him!
Good experience - doctor was great! Just took too long to get to him as a new pt.
always very helpful
Kate was wonderful again. She carefully explained my condition to me, my progression and further treatment and visits in the future. She really took the time to address my concerns.
I get the best care from Dr. Perez - I call him my miracle worker. He & his staff cured my arrythmia. My heart now beats at regularly.
Dr. Perez has helped me through my ICD process and getting used to it. And answers my questions regarding it.
Love Dr. Perez & his team. Alyson is great.
Dr Perez came to see me and talk to me a number of times when I was in the hospital for a week in July. he is a very compassionate person.
Great professional. Considerate and listens
spent an hour with my husband and I answering questionsvery compassionate
Very impressed with Dr. Perez - - he knew my health history - - it was a 1st of documents to review.
Dr. was very kind and understanding.
Every person I know that wonders how I am I tell Stanford Hosp. is the very best hosp. I have ever been too.
Dr. Perez is also very professional & courteous.
Excellent professional, friendly, knowledgeable, care provider.
Dr. Marco & nurse Alison are very caring and compassionate. Alison is amazing in her quick response times.
Never write on comments BUT Doc Perez and his staff is worth it!
Dr. Perez was excellent in categories.
Good experience overall.

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