Portrait of Karin Gaensler
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Karin Gaensler, MD

Blood and Marrow Transplant • Hematology
Hematology, Blood & Marrow Transplant, and Cellular Therapy (HBC) Parnassus
Portrait of Karin Gaensler
Portrait of Karin Gaensler
ucsf logo

Karin Gaensler, MD

Blood and Marrow Transplant • Hematology
Hematology, Blood & Marrow Transplant, and Cellular Therapy (HBC) Parnassus

On this page

About me

Dr. Karin Gaensler is a specialist in cancers of the blood who has a special interest in gene therapy. She is currently working to develop novel approaches for treating blood disorders caused by a specific gene mutation.

Gaensler earned her medical degree from Harvard Medical School. She then went on to complete her residency in internal medicine and a fellowship in hematology and oncology at UCSF.

Gaensler has received numerous awards, including a fellowship from the American Cancer Society, a fellowship from the Howard Hughes Medical Institute and a physician-scientist award from the National Institutes of Health.

Education & training

Board certification

  • Medical Oncology, American Board of Internal Med/Medical Oncology
  • Hematology, American Board of Internal Medicine/Hematology
  • Internal Medicine, American Board of Internal Medicine

Fellowship

  • Hematology - Oncology, UCSF Graduate Medical Education

Residency

  • Internal Medicine, UCSF Graduate Medical Education

Degree

  • MD, Harvard Medical School

Locations

    Reviews

    Average rating

    4.9
    4.9 out of 5 Stars
    70 ratings
    About provider reviews

    Showing 1-6 of 18 reviews

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    • 5 out of 5 Stars
      January 23, 2026

      Dr. Gaesnler answered all our questions and concerns with care and support

    • 5 out of 5 Stars
      October 10, 2025

      This clinic sees people that are often quite sick. Dr. Gaensler is the best!! Her bedside manner and caring ways are most comforting! Her knowledge is obviously immense!

    • 5 out of 5 Stars
      September 23, 2025

      Dr. Gaensler is the best! She cares about me as a patient and as a person. She listens to my concerns and, if an answer to my issue is not easy, she investigates and gets back to me.

    • 4.9 out of 5 Stars
      September 7, 2025

      Dr. Gaensler was very thorough in reviewing my medical issues/treatment prior to our meeting and discussing current and future treatment. I was very impressed with how thorough and professional she was. I feel fortunate to have her on my UCSF Team.

    • 5 out of 5 Stars
      August 23, 2025

      Dr. Karen Gaensler was wonderful in every way - incredibly knowledgeable, compassionate, patient, etc. I am so grateful that I'm her patient!!

    • 5 out of 5 Stars
      August 21, 2025

      Dr. Gaensler is amazing! She is above and beyond the call of duty!

    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.

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