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Liviu Klein


Computer programmer and amateur soccer player

Dr. Liviu Klein, a cardiologist at the UCSF Heart & Vascular Center, is director of Advanced Heart Failure Comprehensive Care Center and director of the Mechanical Circulatory Support Program. He specializes in caring for patients with heart failure and arrhythmias, including care before and after surgery for those receiving heart transplants. He also has expertise in cardiac resynchronization and mechanical therapies, such as ventricular assist devices for heart failure.

In his research, Klein studies the epidemiology of heart failure in women, including those at risk for sudden cardiac death. Together with colleagues in the Department of Bioengineering and Therapeutic Sciences, he is developing new technologies for monitoring and treating patients with heart failure and other kinds of cardiovascular disease, including those who use ventricular assist devices.

Klein earned a medical degree at the Carol Davila University of Medicine in Bucharest, Romania. He earned a master's of science degree in clinical investigation at Northwestern University. He completed a residency in internal medicine at the Advocate Illinois Masonic Medical Center in Chicago and a fellowship in cardiovascular epidemiology at Northwestern University's Feinberg School of Medicine. At Northwestern's McGaw Medical Center, he completed fellowships in cardiovascular disease, advanced heart failure and heart transplantation, and in clinical cardiac electrophysiology.

Klein is a member of the American Heart Association, Heart Failure Society of America and International Society for Lung and Heart Transplantation. He has published more than 100 peer-reviewed articles and books.

  • Education

    Universitatea De Medicina Si Farmacie, Bucharest Romania, 1999

  • Residencies

    Advocate Illinois Masonic Medical Center, Chicago, Internal Medicine, 2003

  • Fellowships

    Northwestern University, Cardiovascular Epidemiology, 2005

    McGaw Medical Center, Northwestern University, Cardiovascular Disease, 2007

    McGaw Medical Center, Northwestern University, Advanced Heart Failure and Transplantation, 2008

    McGaw Medical Center, Northwestern University, Cardiac Electrophysiology, 2009

  • Board Certifications

    Advanced Heart Failure & Transplantation, American Board of Internal Medicine

    Cardiovascular Disease, American Board of Internal Medicine

  • Academic Title


  • Languages



"You have to be like a detective and figure out which condition led to heart failure."

Where I see patients (4)

    The future of cardiac care relies on ongoing connectivity with patients to delay disease progression and improve quality of life.

    My reviews


    Overall Experience
    105 Ratings
    About our process
    Jul 26, 2023
    Dr.Klein is wonderful!
    Jun 16, 2023
    Dr. Klein is awesome. The best doctor
    May 11, 2023
    Treatment was well received
    Mar 24, 2023
    The best cardiologist one could whish for!
    Mar 24, 2023
    Dr. Klein is brilliant and caring and I am very grateful to have him as my provider.
    Feb 26, 2023
    Love the service
    Feb 17, 2023
    Excellent provider . Overall I feel like I have a great cardio doctor watching over me who communicates with me easily and explains what is going on with my health. Good experience
    Feb 16, 2023
    All very good.
    Feb 15, 2023
    The best doctor!
    Oct 30, 2022
    Good experience
    Oct 29, 2022
    Well informed
    Sep 28, 2022
    I have received high quality attention and care.I was not surprised since that's my past experience with this team too.Appreciate it immensely.
    Sep 21, 2022
    As a new patient the transition to this care provider from my previous one was quite rocky and confusing and at times upsetting. It became easier and more clear once I gained an understanding of the provider's process and communication procedures.
    Sep 14, 2022
    Good experience
    Jun 12, 2022
    Dr Klein prescribed 3 new medications but I don't know what they are without the after visit notes
    Mar 25, 2022
    Always a great experience with Dr. Klein. I truly believe he has saved my life.
    Dec 28, 2021
    All good
    Dec 13, 2021
    Oct 29, 2021
    I am very grateful to Dr. Klein. He really is the best cardiologist one could ask for.
    Decorative Caduceus

    Sponsor-Initiated OCS Heart Perfusion Registry

    Patient survival at one-year post-heart transplant.


    Decorative Caduceus

    remedē System Therapy Study

    Proportion of subjects with peri-operative and long-term serious adverse events (SAEs) related to the remedē System implant procedure, device or delivered therapy


    Decorative Caduceus

    OCS Heart Perfusion Post-Approval Registry

    Patient survival at one-year post-heart transplant.


    Decorative Caduceus

    Early Feasibility Study - Transcatheter Atrial Shunt System


    Decorative Caduceus

    Remote Dielectric Sensing (ReDS) Assisted Diuresis in Acute Decompensated Heart Failure

    Cumulative net fluid balance assessed by In's and Out's recorded in the Electronic Medical Record (EMR) during hospitalization


    Decorative Caduceus

    Ultrafiltration Versus IV Diuretics in Worsening Heart Failure


    Decorative Caduceus

    DORAYA-HF Early Feasibility Study

    Device or procedure related SAEs rate (including MACE) based on CEC adjudication.


    Decorative Caduceus

    A Silver Lining in the VAD Sky

    rate of driveline infection per 100 patient


    Decorative Caduceus

    Endovascular Ablation of the Right Greater Splanchnic Nerve in Subjects Having HFpEF

    Change in mean PCWP at 1 month follow up evaluated as a repeated measure at rest, legs up and exercise (20W) as compared to the baseline PCWP evaluation. This reduction will be assessed in all subjects (both treated and control) t...


    My work

    Coordinated care saves patient after heart attack

    After John's heart stopped, Dr. Klein and a team of cardiac specialists at UCSF helped the former police officer make a full recovery. "I'm very grateful."