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  • Board Certifications

    American Board of Internal Medicine, Internal Medicine, 1993

  • Residencies

    UCSF, Internal Medicine, 1993

  • Degree

    University of California, San Francisco, School of Medicine, 1990

  • Languages

    English

Where I see patients (1)

    My reviews

    5.0

    Overall Experience
    350 Ratings
    About our process
    Jun 28, 2025
    Dr. Null is an excellent Doctor, very well versed in his field. I have been with Dr Null for over thirty years. When a life threatening problem came up he called me at home. Told me I would get through it. After 119 days in the hospital I'm home and very grateful
    Jun 19, 2025
    I have been with Dr. Null for quite a while. He is very familiar with my health issues and we had a great visit. He went over all my concerns and my most recent laboratory values.
    Jun 14, 2025
    I have recommended him to a number of friends, but his practice is full, which comes as no surprise.
    Jun 11, 2025
    Dr, Null was very thoughtful and thoroughly addressed all my concerns.
    May 04, 2025
    Dr. Null is an exceptionally caring physician who is responsive and enormously proficient and guiding me in all the areas of my concern
    Apr 26, 2025
    Dr Null is awesomelistens, advises, takes the time needed to discuss my concerns
    Apr 26, 2025
    Absolutely outstanding physician. Thoughtful and thorough.
    Apr 25, 2025
    Dr Null has been my primary care doctor since 2000. He is friendly, kind, committed to my care. He's seen me through many crises and problems. He's a superb doctor.
    Apr 23, 2025
    The best experience I could ever hope for.
    Apr 21, 2025
    5 STAR professional care!
    Apr 17, 2025
    Dr. Null is a superb physician. He is professional, knowledgeable, kind and patient! I wish all doctors could be like him!
    Apr 16, 2025
    Dr. Null is the best!!!
    Apr 03, 2025
    We are grateful to have Dr. Null as our family primary physician for more than thirty years.
    Mar 31, 2025
    Dr Null is always excellent
    Mar 20, 2025
    Excellent care
    Mar 18, 2025
    I love Dr. Dan Null all these years. He has been my pcp over 25 years now
    Mar 14, 2025
    Dan Null is the finest internist ever!!!
    Mar 10, 2025
    Very empathetic and understanding of my situation
    Mar 10, 2025
    Dr. Daniel H. Null has been my doctor for 23 years and he is, without a doubt, the best doctor I've ever had. I trust his judgment completely, he genuinely cares about his patients, and he always has an answer to my questions (even if it's that there's no answer yet).
    Mar 03, 2025
    If the rating allowed for a 10, that's what I would give Dr. Null. He is so good at keeping a 76 year old man alive I'm afraid he will retire before I die. That would be unfortunate!!!
    Feb 22, 2025
    Always provides benefits v riskProvides optionsListened to concerns
    Feb 09, 2025
    Dr. Null exemplifies what a good doctor should be: carefully listens, explains all options and proceeds after input, working as a team to address my concerns.This is why I stay with UCSF.
    Feb 07, 2025
    Dr. Null is an outstanding clinician. He also treats other members of my family who have high regard for his excellent care!
    Jan 11, 2025
    Dr. Dan Null is simply amazing. I do not know how I would manage without his guidance. Please acknowledge his expertise and exemplary clinical service.
    Jan 07, 2025
    Dr Null is great but wish I could have longer appointments.
    Jan 07, 2025
    Dr. Null is consistently professional, caring, and a good listener. We feel fortunate to have him as our provider.
    Dec 23, 2024
    Dr. Null is an outstanding clinician who is dedicated to his patients.
    Dec 20, 2024
    I think Dr. Null is the best! I have most likely been his patient for at least 30 years.
    Dec 08, 2024
    Dr. Null is empathetic and also collaborative. He is honest when medical knowledge doesn't have a good answer yet as to how to treat certain health issues.
    Nov 21, 2024
    Dan was very responsive to my concerns with the procedure and went out of his way to explain the risks and benefits clearly. I was very comforted.
    Nov 16, 2024
    Dr Null has been my PCP since 2000, for 24 years. I trust him thoroughly.
    Nov 01, 2024
    Dr. Null is the best! I always feel I'm being well taken care of.
    Oct 15, 2024
    Amazing bedside manner and proactive recommendations
    Sep 27, 2024
    Dr. Null really listens and responds enthusiastically and appropriately to my concerns. I am so grateful he is my doctor.
    Sep 27, 2024
    Unfortunately this visit was interrupted by incoming texts to the provider more than a half dozen times resulting in attention diverted by both patient and provider. This has NEVER happened before (25 years), so I assume the issue was urgent.
    Sep 26, 2024
    Dr Null is the best.
    Sep 11, 2024
    Dr. Null is terrific in every way. I am grateful that he is my physician.
    Sep 07, 2024
    Dr Null is an outstanding physician dedicated to his patients well-being.
    Aug 17, 2024
    Dr Null has been my primary physician for over 30 years and I could not have asked for a better doctor.
    Aug 17, 2024
    I had never met Dr Null before but he listened and asked questions to make sure he could determine my problem. After he reassured me that my diagnosis of my problem was wrong he showed me online remedies in case I faced a future similar situation. He also checked my record and asked about prior medical appointments following up with questions to confirm and verify I was doing well. He also clarified about my misapprehension about lipid panel lab testing though this was not what ,y visit was about.
    Aug 08, 2024
    Dr. Null listened and addressed every concern
    Aug 06, 2024
    Dr. Null is extraordinarily good in knowledge and manner of care.
    Aug 05, 2024
    Dr. Null is an exceptional physician
    Aug 02, 2024
    Extremely responsive and helpful . He is truly the best physician we have had.
    Jul 23, 2024
    Dr. Null is a truly outstanding physician and I am so grateful to be in his care. My visit with him was started because I had an urgent care problem involving a parotid gland infection. The advice nurse in the clinic immediately made a provisional diagnosis and was aware of the potential risk of this particular problem and set me up with a quick visit to one of the physicians in the group and then to Dr Null. Dr Null was able to address other medical issues, most importantly having to do with my high blood pressure, and did as thorough, a job as a highly specialized cardiologist would do in the same circumstance. The overall response of the clinic was a big improvement over many years ago, when I went urgent care for the same problem, and even more recently when I had a kidney stone problem. I can't imagine getting healthcare that's any better than this!
    Jul 09, 2024
    Dr. Null is an exceptional physician and human being.
    Jun 25, 2024
    Dr. Null is tops. A credit to UCSF.
    Jun 16, 2024
    Dr. Null has been my primary for over 30 years and he is the bes!!!!
    Jun 15, 2024
    Dr. Null is a great doctor.
    Jun 13, 2024
    Love Dr Null!!!!!
    Jun 13, 2024
    Dr Null is tops
    May 26, 2024
    Dr Null is one of the finest medical doctors in his field . He is also a very direct, warm , and leave you with no doubt your health is his first concern He will do anything necessary to keep you healthy.
    May 25, 2024
    Great experience
    May 17, 2024
    Dr. Null and staff, always courteous, considerate and professional. Great care is received.
    May 09, 2024
    Dr. Null has been my PCP for a long time. I have experienced the best of care from him.
    May 03, 2024
    Dr. Null excellent in all areas. Works to form a plan with me.
    Apr 30, 2024
    Wonderful doctor & listens & helps
    Apr 27, 2024
    Dr Null has been my Dr for 20 years and I think he is fabulous. He listens, he cares, he responds quickly to e mail ?'s. I feel very lucky to have him in my life.
    Mar 30, 2024
    Dr Null assured me my illnesses are not terminal, and I'd feared for many months they were. He explained that the latest surgeries test, which diagnosed me with a new condition, is actually part of the same illness diagnosed 8 months ago. He said it's good news, because finally the specialists know what's wrong and can apply treatment. I left his office feeling a great weight lifted from me. The specialists are too focused on specifics; Dr Null helped me to see the big picture. And to see that, while I have serious and life-threatening diseases, I'm not doomed. There is a way to treat this as a manageable condition. What profound relief. He takes the time to fully explain a in what's wrong, and helps me understand it in non-medicalese. What a wonderful doctor.
    Mar 26, 2024
    All excellent
    Mar 13, 2024
    Dr Null is one of the best doctors ever !!!
    Mar 11, 2024
    I appreciate Dr. Null tremendously! Best doctor ever.
    Mar 10, 2024
    I am grateful for Dr. Null's care. He prepares for appointments and is on time.
    Mar 09, 2024
    Dr. Null still pratices like the old time physicians. With total focus on the patient, with an understanding of the more holistic insights into medical issues, and with personal and genuine care. The best of the best
    Jan 05, 2024
    UCSF represents the best in medical care as exemplified by Dr. Null
    Jan 04, 2024
    Dr. Null is simply the best. I'm so glad that he teaches other doctors, because the more that doctors and medical providers can be like Dr. Null, the better our world will be.
    Dec 22, 2023
    Dr. Null has provided us excellent care for over 25 years.
    Dec 18, 2023
    Dr. Null is better than very good. Excellent!
    Dec 04, 2023
    Dr.null is an amazing doctor who cares deeply about his patients and his whole staff displays the same attitude. He is the best primary doctor I have ever experienced.
    Nov 22, 2023
    Dr. Null is the best of the best, combining the highest analytical and professional skills and knowledge with direct constructive empathy. I might add he said my live 5 years ago in quickly identifying an underlying life threatening issue that required immediate surgery.
    Nov 16, 2023
    I was indeed well taken care of
    Nov 15, 2023
    Dr. Null is fantastic. He is thorough, actively listens, present, and never makes me feel rushed. He's easy to talk to and organized, so our visits are efficient and cover everything we need to address together.
    Nov 14, 2023
    I like my doctor
    Oct 19, 2023
    Dr Null demonstrates compassion to an extraordinary degree. I feel heard and understood; he honors my viewpoint, informs me of all options, is flexible in his approach.
    Oct 18, 2023
    Dr. Null is lovely
    Oct 05, 2023
    Best doctor ever: listens, explains, very thoughtful
    Oct 01, 2023
    I am blessed that Dr. Null is my doc! I have great confidence in him and his abilities, for that I kept him as my doctor for more than 25 years.
    Sep 29, 2023
    I wish I could recommend Dr. Null and general medicine to others, but you haven't been taking new patients in a really long time. I hope that that changes in the future.
    Sep 28, 2023
    Dr Null is an excellent doctor. I cannot recomend him high enough.
    Sep 24, 2023
    Dr Null is an excellent doctor
    Sep 14, 2023
    Dr. Null could not have been better! Highly attentive, concerned, and communicative. A++
    Sep 12, 2023
    Dr Null is the perfect PCP
    Aug 27, 2023
    Excellent care

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