Dr. Fearon graduated from Dartmouth College and received his medical degree from Columbia University College of Physicians and Surgeons, where he was elected into the Alpha Omega Alpha Medical Honor Society. He completed an Internal Medicine residency at Stanford University Medical Center serving an extra year as a Medical Chief Resident. He completed a General Cardiology and Interventional Cardiology fellowship at Stanford, spending his third year as the Chief Cardiology Fellow. He is currently a Professor of Medicine (Cardiology) and Chief of the Interventional Cardiology Section at Stanford University School of Medicine and the Chief of the Cardiology Section at the VA Palo Alto Health Care System. Dr. Fearon is board certified in cardiovascular medicine and interventional cardiology, and he is a fellow of the American College of Cardiology, the American Heart Association, and the Society of Cardiovascular Angiography and Interventions. He has been elected to the American Society for Clinical Investigation and the Association of University Cardiologists.

Dr. Fearon’s primary area of research interest is in coronary physiology. He has been the principal investigator of numerous multicenter clinical trials, including the FAME trials, which have resulted in multiple publications in the New England Journal of Medicine and led to worldwide adoption of the use of coronary physiology to guide revascularization decisions in the cardiac catheterization laboratory. He also derived and validated the index of microcirculatory resistance, which is now used commonly to assess coronary microvascular function. He has over 300 publications, speaks regularly at major international conferences, and serves as an Associate Editor for Circulation: Cardiovascular Interventions, Guest Editor in Chief for JACC:Asia, and on the editorial board of the Journal of the American College of Cardiology, Circulation, and JACC Cardiovascular Interventions, among other journals. His research laboratory has had near continuous NIH funding and he is currently the principal investigator on an NIH grant evaluating cardiac allograft vasculopathy. He has received multiple teaching awards from Stanford University and has mentored numerous clinician-scientists. Dr. Fearon’s clinical activities include not only percutaneous coronary intervention, but also transcatheter aortic valve replacement.

Professional Summary

Education & Certifications
  • Fellowship: Stanford University Cardiovascular Medicine Fellowship (2002) CA
  • Residency: Stanford University Internal Medicine Residency (1998) CA
  • Residency: Stanford University Internal Medicine Residency (1997) CA
  • Internship: Stanford University Internal Medicine Residency (1995) CA
  • Board Certification: American Board of Internal Medicine, Interventional Cardiology (2002)
  • Board Certification: American Board of Internal Medicine, Cardiovascular Disease (2001)
  • Medical Education: Columbia University College of Physicians and Surgeons (1994) NY
  • M.D., Columbia University College of Physicians and Surgeons, Medicine (1994)
  • B.A., Dartmouth College, English (1990)

Administrative Appointments
  • Director, Interventional Cardiology, Stanford University Medical Center (2013 - Present)


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

Interventional Cardiology at Stanford Stanford, CA
Stanford, CA

300 Pasteur Drive, 3rd Floor, A32

Stanford , CA 94305

(650) 723-6459

Make An Appointment More Clinic Information » Getting Here »

Interventional Cardiology Stanford, CA
Stanford, CA

300 Pasteur Drive, 3rd Floor, Clinic A31

Stanford , CA 94305

(650) 725-2621

Make An Appointment More Clinic Information » Getting Here »

Patient Ratings

(64 Ratings)

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Patient Reviews

(150 reviews)

Did a good job explaining everything and Thank You....
He is a very knowlegeable and good doctor.
He’s amazing. Smart. Thoughtful. caring
very friendly and extremely knowledgeable
Great Doctor!
I have never seen Dr Fearon in person, however I feel confident that should my condition warrant a stent procedure he would be available and take good care of me.
Professional, caring, flexible
Dr Fearon is the BEST! Always listening to my questions ans concerns...and answers them accordingly.
Dr. Fearon and his office are fabulous.
Great bedside manner and answered all questions and provided options for great care.
Will definitely recommend- excellent service
I have been a patient of Dr Fearon for several years. Dr Fearon is an outstanding Cardiologist and I am happy to be a patient of his. I would definitely recommend Dr Fearon to anyone that is experiencing Cardiovascular problems.
A nice doctor.,. Like him a lot...
Amazing MD
Excellent & caring
Explained my situation very clearly
Brief, to the point. Dr. Fearon took my information at face value and was decisive. Refreshingly so.
He is very caring and made me feel that if in an emergency, he would be available to take care of me.
Excellent doctor. Thank you 😊😊ðŸ™
I'm sure Stanford is aware of Dr. Fearon's value. Such physicians are a rare breed these days
Dr Fearon is an excellent doctor, knowledgeable, courteous, very friendly and most of all very proficient!!
Dr.Fearon is trusted doctor
Everyone I met from Dawn, the receptionist, to Pauline, RN, to Dr Fearon greatly exceeded my expectations! All were friendly, thorough, professional and hi
Bill Fearon is terrific.
I have already done so. Dr Fearon is knowledgeable, patient, and personable.
Dr. Fearon is generous with his time - explaining complex issues in lay terms
He is great!
I am impressed with system and feel like Dr Fearon is taking care of my problem. Personal connection even with face time on a phone.
He’s a cut above all others
Dr Fearon always manages to make me feel my concerns are important.
Great job explaining everything.
Very likely...Dr Fearon and Hannah Cardinale are the BEST!!
Excellent MD, we have a good relationship
Outstanding in all respects
All the personnel who I conversed with do a very good job.
I have already recommended Dr. Fearon to friends. He has one of my friends in his care at this time. I am extremely happy & feel safe under Dr. Fearon's care.
All very good. No comments.
Best physician at Stanford!!
Dr. Fearon as good a doctor as I have ever been to.
Bill Fearon is excellent.
Dr. Fuller goes above and beyond. His delivery is impeccable, he created immediate comfort and confidence. I trust him implicitly.
Dr. Fearon & Dr. Pershad are both outstanding cardiologists! They both have excellent "bedside manners" & great listeners, too.
My experience with Stanford was very, very good. The doctor was very easy to talk to. The nurses very caring and helpful.
Very good.
Very insightful - Great care about my total health.
The MD treating me is great! Explains the situation and all aspects. I have every confidence in him.
the doctor and the fellow took the time to answer all of my questions so i could understand my condition
Excellent behavior and cooperation I have got from my doctors and other concerned staff (nurse, practitioner and midwife). It is appreciated.
Great doctor - Stanford is too far to continue.
Dr. Fearon explained everything about the procedure and we did not feel rushed. He spent quite a lot of time with us. He is a very caring physician.
Good experience.
All very good.
Dr Fearon is excellent! He takes the time to explain whats going on, asks my feedback and if I have questions, and seems genuinely happy to see me each visit. I have complete faith in his skills and will make the trip from Monterey to Stanford as long as he is there!
Dr. Fuller explained everything.
Both Ashish & Bill were very conscientious about taking time to explain & listen.
Dr. Fearon was very good w/taking his time to discuss options for my care going forward. I was referred to him as I was told by my previous cardiologist that Dr. Fearon is the BEST. And, he is!
Dr Fearon was great, he explained everything I needed to know. And he explained them so I understood them well.
Everything was explained, patiently I felt like care providers cared about me & my medical issues.
Total confidence THANK YOU!!!
My local cardiologist describes Dr. Fearon as "The Man". I agree wholeheartedly.
bill Fearon is fantastic. I trust him emensely.
Dr. Fearon & staff exceeded expectations.
I was extremely satisfied with my visit. Highly appreciate the professional competence of Dr. William Fearon. I easily built confidence in him.
Dr. Fearon is a very good and compassionate dr. with good bedside manner.
Dr Fearon has always made feel not rushed - he explains thoroughly what is going on and why certain prescriptions or behaviors are necessary. Great bedside manner and he knows his stuff.
Dr. Viswanathan & Dr. William Fearon are exceptionally excellent as care providers. They are both very knowledgeable in their fields, very professional & expert in what they do.
I have extreme confidence in Dr. Vearon. He is an valuable asset to your organization.
The patience & kindness directed to all family members from 51-85 yrs. was awesome.
Both doctors were excellent.
Dr. Fuller was wonderful.
Dr. Fearon took time to explain procedure in depth, gave time for questions & never rushed me. Much appreciated.
My care provider is very very good he explain me all about my health. He explain me very clearly I have full confidence in him and I am recommending my friends to go to Dr. Fearon for treatment.
Excellent delivery of care - Doctor and nurse very concerned and extremely supportive. Excellent delivery of care.
excellent and professional services performed
None better
My experience is 100% good.
A doctor with warm heart.
Outstanding visit with excellent doctor.
The best of the comments for him.
Dr. Fearon truly exceptional doctor in all respects.
dr Fearon and his team walk on water as far as I'm concerned. I continue to be a poster child for Stanford cardiology
Katie & Dr. Fearon are simply the best!
Very good.
great 'bedside' manners. Friendly and interested in her and her concerns. Good communication skills. We both like and trust this doctor.
Dr Fearon is super. Very caring, understanding and reassuring.
Dr. Fearon is the best!
Dr. Ferron and the Dr. who assisted him were excellent in every way.
I always have great communication & care from My Doctors & their Assistants.
Dr. William Fearon was really informative and thorough with about everything. He has a good personality for having his position with Stanford Health Care. Thank you Dr. Fuller Hearon.
Dr. Fearon is a great cardiologist.
Very good.
I felt very fortunate to have Dr. Fearon as my doctor.
I cannot put into words my gratitude for the care given me by Dr. Fearon. I would not be alive today without his excellent care.
Confidence giving experience.
I visit Dr. only for 5 minutes most of my visit was with physician assistant.
Dr. Fearon puts me at ease, knows his stuff, takes his time to explain what's up - I trust him.
William Fearon MD & June Rher MD rushed me through my appointment - - which was my first after an EKG & echocardiogram which showed a serious but silent major infarction of my LAD artery. Showed insincere concern to me as a person & treated me like a lab rat.
Very good.
Very good.
Dr. Fearon is the Joe Montana of cardiologists!
Very comfortable and informative.
Dr. Fearon is wonderful. Very personable incredibly knowledgeable. Always remembered not just my name but my wife's name.
Sometimes I have come to Dr Fearon's office in a negative mood (caused by my long drive through traffic to get to Stanford from the East Bay) but he & the staff have been very nice anyway.
Superb is always.
Give them a 10 & over.
Excellent doctor!
Bill Fearon is fantastic. He shows genuine interest in me. Super helpful and thoughtful. I trust him completely.
It was as pleasant as any trip to the Doctor can be...
None better than this Doctor
Everything was good.
I was told on my 1st visit I had an extremely serious condition. On my second visit eh said he didn't know exactly what I had.
Great no nonsense staffing straight to the point/precise -
Dr Fearon was professional, friendly and complete.
Stanford should be very proud of the way they conduct and operate their service!
There was no comment about how to care for myself as a heart patient. Heart-focused only.
Dr. Fearon is an absolutely wonderful MD!
The way the hosp. sent this survey to its patient made a patient like me think "I am in your good hand".
Dr. William Fearon is tops. Very thankful to have him as my cardiologist!
Doctor & staff are amazing they are about me as a patient.
Stanford rocks!
Very good experience.
We always receive VIP service. Dr. Fearon and his assistant are very professional and caring.
Very good.
Dr. Fearon is a very professional & competent physician (cardiologist).
Very good.
Dr. Fearon is FANTASTIC.
Just keep up all the way the good job.
Bill Fearon is a pro's pro. He is v. good. He is not only empathetic, he is thoughtful & candid.
A compliment to Dr. Will. is due here.
Pleased with the whole staff.

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