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Dr. Andrew Leavitt is director of UCSF's program for noncancerous blood disorders as well as director of the UCSF Adult Hemophilia Treatment Center. He cares for patients with classical (nonmalignant) blood diseases, including bleeding disorders (such as hemophilia and von Willebrand disease), platelet function disorders, disorders of insufficient platelets (such as immune thrombocytopenia and thrombotic thrombocytopenic purpura), venous thromboembolic disorders (blood clots), neutropenia (reduced numbers of the white blood cells called neutrophils) and anemia.

Leavitt is medical director of UCSF's blood and marrow transplant clinical laboratory, which supports the cellular therapy program. He is internationally known for his studies of the development of megakaryocytes, large cells in the bone marrow that divide to produce blood platelets. His research focuses on improving treatment and outcomes for patients with bleeding disorders and venous thromboembolic diseases.

Leavitt obtained his medical degree at Harvard Medical School. He completed a residency in internal medicine and served as chief resident at the University of Michigan. At UCSF, he completed a fellowship in hematology and oncology, followed by a fellowship in transfusion medicine. He joined the UCSF faculty in 1992.

Leavitt has served on expert guideline panels for venous thromboembolism treatment in patients with cancer. He has also served on the editorial boards of the journal Blood, the Journal of Clinical Investigation, and the Journal of Clinical and Translational Science.

  • Education

    Harvard School of Medicine, 1984

  • Residencies

    University of Michigan Hospital, Internal Medicine, 1988

  • Fellowships

    UCSF Medical Center, Transfusion Medicine, 1992

    UCSF Medical Center, Hematology/Oncology, 1991

  • Board Certifications

    Internal Medicine, American Board of Internal Medicine

Where I see patients (3)

    My reviews


    Overall Experience
    195 Ratings
    About our process
    Dec 01, 2023
    Always listens and responsive to questions concerns and follow-up.
    Nov 21, 2023
    Exceeded expectations!
    Nov 21, 2023
    Excellent appointment in every way.
    Nov 11, 2023
    Dr Leavitt is a GEM. A real person as well as an experienced & super skilled doc. I feel completely seen & heard by him. He focuses on me the person as well as me the patient. Soooo important. I hope he is my hematologist forever. I drive 75 miles to see him. I am grateful.
    Nov 04, 2023
    Dr Leavitt is the best.
    Oct 31, 2023
    Mine is a complicated case and Dr. Leavitt had prepared throughly. He listened carefully and answered my questions fully thoughtfully. and understandably. And also sympathetically.
    Oct 24, 2023
    Dr. Leavitt is a very thoughtful kind caring and exquisitely knowledgeable health care professional! I could not imagine a physician who embodies the term healer more than doctor leavitt!
    Sep 28, 2023
    Dr. Leavitt is outstanding. His expertise and ability to make you feel comfortable at the same time provides an affirming experience.
    Aug 12, 2023
    A very pleasant experience
    Jul 29, 2023
    Dr. Leavitt is an excellent physician---extremely thoughtful and helpful.
    Jul 15, 2023
    Oh yes I would Highly recomend DR Leavitt and UCSF Hemotolegy to anyone with a rare or undiscoveted bleeding disorder .
    Jul 13, 2023
    Dr Leavitt is an excellent physician and very patiently reviewed my medical history.It was an excellent experience
    Jul 08, 2023
    Dr. Leavitt is outstanding
    Jul 07, 2023
    Outstanding expertise!
    Jun 29, 2023
    Dr. Leavitt is thorough in his examination and he explains things in a way that you completely understand the assessment/diagnosis. He's an excellent physician.
    Jun 28, 2023
    Great doctors!!
    Jun 09, 2023
    Dr. Leavitt was fabulous. My husband joined us for visit and we both felt the same. He is very knowledgeable and extremely concerned for his patients. I would highly recommend him.
    Jun 07, 2023
    After a traumatic experience at UCSF (radiology/surgery) Dr. Leavitt showed compassion and offered appropriate follow-up within the context of my hematology care. I appreciated his offer to meet with me within a few days of when I reached out scheduling me in the early evening when I assume he would not otherwise be handling visits.
    May 26, 2023
    I like that Dr. Leavitt listens very carefully and then is also very clear in his answers.
    May 26, 2023
    Dr Leavitt is exceptional in every way from expertise to patient relations. I'mVery fortunate to be under his care. I can't say enough good about him.
    May 06, 2023
    Andrew Leavitt is my dream doctor. I would recommend him to anyone. He is very well versed in my condition and totally committed to treating me as an individual - as in my treatment plan is about ME & my condition not just about general statistics for my condition's treatment. He is compassionate & concerned & interested in the welfare of my whole being physical medical emotional psychological. He is a PLEASURE. & he is GOOD. I am so grateful.
    May 05, 2023
    A great experience. All of my questions and concerns were addressed in a friendly and professional manner.
    May 04, 2023
    Dr Leavitt is a great communicator thorough and knowledgeable. What more could I ask for???
    Apr 30, 2023
    Dr Leavitt is an excellent doctor.
    Apr 25, 2023
    Dr. Leavitt is great. He is above and beyond a doctor!!
    Apr 12, 2023
    Dr. Leavitt is very good have been seen him for years
    Apr 01, 2023
    Dr Leavitt is so good at stating his assumptions explaining what he's doing why he's asking questions and inquiring into my full health. BEST DOCTOR EVER!
    Mar 18, 2023
    Mar 15, 2023
    He is one of the best
    Feb 24, 2023
    Dr. Leavitt is awesome. He is very kind courteous and professional and I very much value his expertise care treatment and guidance.
    Jan 12, 2023
    Dr Leavitt was meticulous in reviewing my history and explaining all that he did and was thinking. He was friendly as well and has a good sense of humor.
    Jan 05, 2023
    Dr Leavitt made me feel at ease and showed a great deal of compassion for my situation. He provided me with good information and helped me devise a plan of care moving forward. Thank you Dr Leavitt!
    Dec 30, 2022
    Dr. Leavitt is very thorough in his examinations and he explains matters clearly in language that you can understand and comprehend. He makes you feel at ease and comfortable with whatever medical information about your health that he communicates to you.
    Dec 22, 2022
    Dr Andrew Leavitt is the best. Calm professional and feel grateful for his expertise.
    Dec 02, 2022
    He is the best doctor my mom has ever had.
    Nov 29, 2022
    Great experience I was asked what I wanted out the appointment ?
    Nov 24, 2022
    He is a great listener and a caring doctor.
    Nov 03, 2022
    Dr Andrew Leavitt is a true gem of a doctor & a human being. I felt completely heard and considered- my straight up medical history and so importantly my STORY of me along with my history. The experience I hoped for. What a blessing.
    Nov 03, 2022
    You don't have a scale sufficient to express my delight and great appreciation for Dr Leavitt. He is most outstanding all aspects of care and expertise. I am grateful to be under his care.
    Nov 01, 2022
    Dr very professional and explained everything so that I could understand
    Sep 29, 2022
    Very lucky to have met Dr. Leavitt. Looking forward to having him care for my health and blood condition.
    Sep 25, 2022
    Dr. LEAVITT was fabulous.....Took time with me and was extremely thorough. Couldn't have been happier with my visit.
    Sep 22, 2022
    Dr. Leavitt is an excellent doctor and my experience with him over the years has been exceptional. I would highly recommend him to others.
    Sep 17, 2022
    Sep 01, 2022
    He's one of perhaps two doctors I've had In my life who was fully prepared for my visit. Prior to the visit he'd looked at my medical history and laboratory results and started right away asking questions about the things he'd found. I can't tell you how unusual (and wonderful) this was as typically my visits with other doctors are fully taken up with them frantically going through my file trying to figure out who I am and what my history is leaving no time for any progress.
    Sep 01, 2022
    Dr. Leavitt is so attentive and thorough. I truly appreciate his time and care.
    Aug 04, 2022
    Dr leavitt is the best doctor I've met both clinically and interpersonally
    Jul 26, 2022
    Dr. Leavitt was amazing! He asked questions listened and had many treatment options available to me. One of the best healthcare experiences I've ever had.
    Jul 12, 2022
    Always good phone visit
    Jul 11, 2022
    Great guy knows what I need gives sound advice follows up
    Jul 08, 2022
    Dr Leavitt is excellent!
    May 01, 2022
    Dr Leavitt was outstanding!!
    Apr 17, 2022
    Dr Leavitt is a wonderful person and physician. He knows my history brings expertise forward for all decisions and is my trusted partner. I'm so grateful to have his support.
    Apr 05, 2022
    I would recommend Dr. Leavitt to anyone
    Mar 31, 2022
    One of the most personable providers I've ever experienced.
    Mar 29, 2022
    Dr Leavitt was extremely friendly professional clear thorough and very helpful; primarily he updated and edited all my existing records and was then able to make a referral to another provider on his team who treats my condition.
    Mar 24, 2022
    This was my first appointment with this Dr. Leavitt. He was very impressive with his knowledge of my medical conditions his explanations of my health issues and plans moving forward for treatment. High energy and so very impressive.
    Mar 19, 2022
    Dr Leavitt was extremely thoughtful in his explaination of my health condition and gave excellent advice.
    Mar 02, 2022
    Dr. Leavitt was great - very knowledgable respectful friendly and caring.
    Feb 24, 2022
    The appointment felt rushed as it went on and there are numerous uncertainties and questions remaining. But Dr. Leavitt had outstanding demeanor and was interested in my thoughts my wishes etc. I appreciated how conversational and attentive he was and his focus on the outcomes that would be satisfying for me as well as anticipating future healthcare and planning and informing me accordingly.