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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
    109 Ratings
    About our process
    Nov 28, 2023
    Dr. Klein listened closely was well aware of my condition and medical records and provided me with sound options in a very calm manner.
    Nov 26, 2023
    Excellent care so far.
    Nov 10, 2023
    Very good
    Nov 05, 2023
    Very good is too lackluster of a rating and doesn't adequately describe the care that I feel that I receive in this Clinic. I have always received outstanding care by Dr Klein. Dr Klein is a brilliant and extremely compassionate physician. He and his Team have always been responsive to any/all of my health questions / concerns. I am extraordinarily fortunate and so very grateful to have Dr.Klein as my cardiologist.
    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.
    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

    Clinical Evaluation of the AccuCinch® Ventricular Restoration System in Patients Who Present Wi...

    MAE defined as: All-cause death, Myocardial infarction, Stroke, Need for non-elective cardiovascular surgery, Worsening of heart-failure requiring mechanical circulatory support for more than 24 hours Acute kidney injury requiring...


    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

    Heart Failure (HF) event defined as any HF rehospitalization or unplanned use of IV loop diuretics, vasoactive medications or Aquadex therapy in any outpatient setting.


    Decorative Caduceus

    DORAYA-HF Early Feasibility Study

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


    Decorative Caduceus


    Until the end of the study, each participant will be assigned to one of the following event outcomes: Having at least one protocol-defined Heart Failure Event (HFE) in the CORE period Having no Heart Failure Event (HFE) during the...


    Decorative Caduceus

    A Silver Lining in the VAD Sky

    rate of driveline infection per 100 patient


    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."

    UCSF's 35 years of heart transplant experience

    A leader in treating advanced heart failure, UCSF performed nearly 80 heart transplants in 2023. Dr. Klein shares his perspective on our commitment to cutting-edge care.