Portrait of Thomas A. Dewland
ucsf logo

Thomas A. Dewland, MD

Electrophysiology • Cardiology
Cardiology Parnassus
415-353-2873
Portrait of Thomas A. Dewland
Portrait of Thomas A. Dewland
ucsf logo

Thomas A. Dewland, MD

Electrophysiology • Cardiology
Cardiology Parnassus
415-353-2873

On this page

About me

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 & training

Board certification

  • Clinical Cardiac Electrophysiology, American Board of Internal Medicine

Fellowship

  • Cardiac Electrophysiology, UCSF School of Medicine -GME
  • Cardiology, UCSF School of Medicine -GME

Residency

  • Internal Medicine, UCSF School of Medicine -GME

Internship

  • Internal Medicine, UCSF School of Medicine -GME

Degree

  • MD, Yale University School of Medicine

Academic title

  • Clinical Professor

My expertise

Locations

    Reviews

    Average rating

    4.9
    4.9 out of 5 Stars
    230 ratings
    About provider reviews

    Showing 1-6 of 52 reviews

    Sort by
    • 5 out of 5 Stars
      May 19, 2026

      Dr. Dewland was personable, concise and covered the intended subject thoroughly. It was an excellent interaction, and I came away feeling like we communicated clearly and my wide variety of questions were all answered. I would highly recommend him.

    • 5 out of 5 Stars
      May 19, 2026

      Very easy to talk to, informative, and made sure I understood everything he was talking about. Very nice doctor. Very pleased!!

    • 5 out of 5 Stars
      May 15, 2026

      Great care provider Dr Dewland

    • 5 out of 5 Stars
      May 10, 2026

      Outstanding

    • 5 out of 5 Stars
      May 3, 2026

      All good

    • 5 out of 5 Stars
      April 9, 2026

      My experience has been excellent

    Please check with your health insurance plan regarding coverage for this type of care. Not all providers at UCSF Health are covered by every insurance plan.

    For informational purposes only, a link to the federal Centers for Medicare and Medicaid Services (CMS) Open Payments web page is provided here.

    The federal Physician Payments Sunshine Act requires that detailed information about payment and other payments of value worth over ten dollars ($10) from manufacturers of drugs, medical devices, and biologics to physicians and teaching hospitals be made available to the public.