Skip to Main Content

Thomas A. Dewland


Cardiologist and electrophysiologist
Arrhythmia researcher and trail runner

Dr. Thomas A. Dewland is a cardiologist with particular expertise in electrophysiology, the study of the heart's electrical activity. He cares for patients with arrhythmias (heart rhythm problems) in both the clinic and the hospital. Among other treatments, he performs catheter ablation (in which a flexible tube called a catheter is threaded through a blood vessel to reach the heart and destroy the tissue causing an arrhythmia), pacemaker implantation, implantable cardioverter defibrillator placement and left atrial appendage closure (sealing the heart sac where blood clots form to help prevent stroke in patients with the heart rate irregularity called atrial fibrillation).

In research, Dewland focuses on atrial fibrillation epidemiology (the study of which populations are affected by certain diseases and why). His goal is to identify ways to prevent atrial fibrillation before it occurs.

Dewland earned his medical degree at the Yale School of Medicine. At UCSF, he completed a residency in internal medicine, a fellowship in cardiology and a fellowship in cardiac electrophysiology, as well as the Advanced Training in Clinical Research Certificate Program.

Outside of work, Dewland enjoys spending time with his wife – a pediatrician at UCSF – and their two children.

  • Education

    Yale University School of Medicine, MD, 2006

  • Residencies

    UCSF, Internal Medicine, 2009

  • Fellowships

    UCSF, Cardiology, 2012

    UCSF, Cardiac Electrophysiology, 2014

  • Academic Title

    Associate Professor

Cardiac arrhythmia care can be complex, but good patient care is not. I listen to my patients, and together we choose an effective treatment plan.

Where I see patients (1)

    My reviews


    Overall Experience
    195 Ratings
    About our process
    Oct 19, 2023
    Very positive and informative
    Sep 02, 2023
    The provider provided a good amount of information upfront and answered all questions in detail
    Aug 23, 2023
    Aug 23, 2023
    Appreciate Dr Dewland.
    Aug 16, 2023
    Appreciate his indepth learning of my issues & his thinking
    Aug 14, 2023
    Discussion was to the point without unnecessary side talk.
    Jun 27, 2023
    I thought Dr Dewland was clear did not rush gave me time to ask questions and I felt listened to.
    Jun 24, 2023
    Dr. Dewland is a great doctor to have
    Jun 22, 2023
    Excellent doctor very attentive and knowledgeable!
    Jun 01, 2023
    Value Dr. Dewland 's expertise
    May 11, 2023
    It's always a pleasure talking with Dr. Dewland and he listens and provides a pragmatic plan of action which I love.
    May 06, 2023
    Dr. Dewland was thorough and very helpful In explaining my condition and decision on treatment.
    Mar 21, 2023
    Good!He listened to my overall concerns and questions. He knew my past medical too. Happy
    Mar 20, 2023
    Dr. Dewland is one of the most empathetic and straightforward care providers I have encountered In my lifetime.
    Mar 15, 2023
    Excellent doctor who listened carefully.
    Jan 24, 2023
    The best part
    Jan 18, 2023
    The reason I travel and choose UCSF MDs is because they are among the best I am able to find in the region. I am grateful to speak with a specialist like this physician who listened to me knew my condition and made me feel like we were choosing the best course of action for my health moving forward.
    Jan 09, 2023
    Surprized that exam did not include physical. It should. But care wad There waz no physical exam a surprize because there should have been. Yet care muchmuch better than what I got in ER 2 months earlier.
    Dec 26, 2022
    A good Doctor
    Dec 10, 2022
    Dr. Dewland is very a good provider. I have been happy with all care
    Dec 03, 2022
    Nov 21, 2022
    Provided detailed knowledge on my condition. In doing so Had a more comprehensive understanding.
    Nov 12, 2022
    Still awaiting follow-up
    Nov 05, 2022
    Dr. Dewland was excellent he put me at ease and explained about my procedure(implant of a pacemaker) and gave me all the information I needed.I was impressedand would recommend him to others.
    Nov 01, 2022
    I have been very satisfied with my encounters with Dr. Dewland.
    Sep 06, 2022
    Dr Dewland and his team are amazing.
    Aug 16, 2022
    I trust my doctor
    Aug 12, 2022
    I was nearly brought to tears when Dr. Dewland asked me what my thoughts were after our discussion. I believe I even asked "Really? You want to know MY thoughts?" In the year since I'd been diagnosed I haven't had a cardiologist ask me that. I appreciated being treated like I might have some insight into my own body and like I have some intelligence about my condition.
    Aug 11, 2022
    Dr. Dewland was excellent. His explanations were clear and comprehensive. And he is friendly and approachable.
    Aug 01, 2022
    Dr Dewland is kind compassionate and knowledgeable
    Apr 02, 2022
    The provider did not spend enough time to discuss my health problems. It's like the provider in a hurry.