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Johannes Kratz


Thoracic and cancer surgeon
Director, Advanced Minimally Invasive Thoracic Surgery
Early-stage lung cancer researcher, avid skier and biker

Dr. Johannes Kratz is a thoracic surgeon who specializes in treating disorders of the trachea, chest wall, lung, esophagus and mediastinum (the space between the lungs containing the heart and other structures). He directs UCSF's program for advanced minimally invasive thoracic surgery.

Kratz's research interests include robotic surgery outcomes, lung and esophageal cancers, biomarkers to personalize lung cancer treatment and immunotherapies for thoracic tumors. His current research focuses on understanding the molecular and genetic profiles of high-risk tumors in early stages and developing targeted therapies to treat them.

While a surgical research fellow at the UCSF Thoracic Oncology Laboratory, Kratz developed a test that more accurately predicts outcomes for patients with early-stage lung cancer. Now available to patients, this test has improved outcomes for those with high-risk lung cancer detected early.

Kratz earned his medical degree at Harvard Medical School, graduating magna cum laude. He completed a general surgery residency at Massachusetts General Hospital, followed by a fellowship in cardiothoracic surgery at UCSF. He also has a master's degree in philosophy from Stanford University.

Kratz is a member of the American College of Surgeons, Society of Thoracic Surgeons, Massachusetts Medical Society and American Society of Clinical Oncology. In 2017, he received a UCSF Health Exceptional Physician Award. He is the Van Auken Endowed Chair in Thoracic Oncology at UCSF.

  • Education

    Stanford University, B.A., Philosophy, 1998

    Stanford University, M.A., Philosophy, 2000

    Stanford University, B.S., Biological Sciences, 1998

    Harvard School of Medicine, 2006

  • Residencies

    Massachusetts General Hospital, General Surgery, 2014

  • Fellowships

    American Association for Thoracic Surgery Graham Foundation, Surgical Robotics, 2016

    UCSF Medical Center, Thoracic Surgery, 2017

  • Board Certifications

    Thoracic and Cardiac Surgery, American Board of Thoracic Surgery

    Surgery, American Board of Surgery

  • Academic Title

    Assistant Professor

Helping others is at the core of everything I am passionate about.

Where I see patients (1)

    My reviews


    Overall Experience
    73 Ratings
    About our process
    Oct 14, 2023
    UCSF has the Absolute Best Practitioners on the planet!
    Aug 17, 2023
    Dr Kratz is part of my health care team & we could not be more pleased with my care.
    Jul 13, 2023
    Dr Kratz makes me feel I'm in excellent hands
    Mar 24, 2023
    At a very trying time I feel lucky to have Dr. Kratz as my doctor.
    Mar 05, 2023
    Dr Kratz is kind informative reassuring.
    Feb 16, 2023
    Dr Kratz has an awesome bedside manner is very knowledgeable and really helped to explain things and settle my nerves. Looking forward to PET scan and possibly surgical removal of lung mass.
    Feb 02, 2023
    After I listened to him and he listened to me there no doubt Dr. Kratz is the physician by choice
    Aug 28, 2022
    Dr Kratz is wonderful as a surgeon and a person and a communicator!!!!
    Aug 04, 2022
    I appreciate both Dr. Kratz and his assistant. Today I feel much better and more in control of my situation thanks to being informed of my problem and potential options.
    Jun 11, 2022
    We felt very much included in the decision to choose surgical treatment & information about outcome was very helpful.
    Apr 26, 2022
    He is very kind and accommodating to answer all my concerns.He came to see me first thing in the morning after surgery. He made my difficult condition into a feeling that there is a doctor who is making sure that you are okay. We don't have a lot of these kindand I am very very lucky to be under his care.