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Mark Lewis, MD, FASCO
51.5K posts
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Mark Lewis, MD, FASCO
@marklewismd
Director, GI Oncology, @Intermountain. Interests: neuroendocrine tumors, cancer syndromes, empathy (even had a Whipple myself). Tweets my own.
Murray, UT
intermountainhealthcare.org/find-a-doctor/…
Joined September 2012
34.9K
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96.2K
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  • Pinned
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    Mark Lewis, MD, FASCO
    @marklewismd
    Nov 20, 2025
    Cancer killed my father and now it must prepare to die
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    Afolabi Sokeye 🧱
    @SokeyeA
    Nov 7, 2025
    What’s the lore behind choosing your career path ?
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    11M
  • user avatar
    Mark Lewis, MD, FASCO
    @marklewismd
    Jul 31, 2024
    Americans will do ANYTHING not to use the metric system
    This Post is from an account that no longer exists. Learn more
    6M
  • user avatar
    Mark Lewis, MD, FASCO
    @marklewismd
    Nov 21, 2021
    I’ve never seen a better graphical depiction of grief
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    Mark Lewis, MD, FASCO
    @marklewismd
    Apr 2, 2024
    Honestly don't know how to earn that 5th star
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    5.4M
  • user avatar
    Mark Lewis, MD, FASCO
    @marklewismd
    Apr 22, 2025
    Ordered a bone density test for someone who never had one before Had it denied because “we don’t know the patient’s bone density is low”
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    2.6M
  • user avatar
    Mark Lewis, MD, FASCO
    @marklewismd
    Jun 16, 2023
    I had a medical student shadow me all day in oncology clinic and, when I asked them at the end what surprised them the most, they paused to reflect & then said “the hope”
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    13M
  • user avatar
    Mark Lewis, MD, FASCO
    @marklewismd
    Aug 6, 2024
    Incredible tribute to phospholipids
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    2M
  • user avatar
    Mark Lewis, MD, FASCO
    @marklewismd
    Aug 29, 2024
    Is there a Pulitzer for subtitles?
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    1.3M
  • user avatar
    Mark Lewis, MD, FASCO
    @marklewismd
    Apr 10, 2021
    We were just outside on the day the mask mandate has been lifted here in Utah and someone yelled across the street “TAKE OFF YOUR MASKS!” Before I could reply my 10-year-old shouted “NO THANKS — MY MOM’S A PEDIATRICIAN, MY DAD’S AN ONCOLOGIST, AND I’M NOT VACCINATED!” 🤚 🎤
  • user avatar
    Mark Lewis, MD, FASCO
    @marklewismd
    Sep 19, 2023
    I had a medical student shadowing me today so we spent a lot of valuable time reviewing how to use this piece of specialized equipment that is now almost unique to the healthcare industry
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    1.7M
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    Mark Lewis, MD, FASCO
    @marklewismd
    Oct 4, 2024
    Doctor here: in a world of siloed electronic medical records (and where we are still using the fax machine in the Year of Our Lord 2024) I find it enormously helpful when patients do this Self-advocacy is among the most powerful forces in healthcare
    This Post is from an account that no longer exists. Learn more
    924K
  • user avatar
    Mark Lewis, MD, FASCO
    @marklewismd
    May 14, 2023
    The perfect Mother’s Day card doesn’t exi—
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    1.7M
  • user avatar
    Mark Lewis, MD, FASCO
    @marklewismd
    May 17, 2021
    Please stop telling my patients they wouldn’t have gotten cancer if they’d eaten more vegetables. A healthy diet is a wonderful thing, but it does not protect you from terrible misfortune. Signed, A gastrointestinal oncologist
  • user avatar
    Mark Lewis, MD, FASCO
    @marklewismd
    Sep 25, 2024
    There’s a chemotherapy I prescribe where the infusion rate varies by both temperature & altitude and the dosage coefficient changes based on the patient’s bilirubin so I am very lucky that medicine doesn’t involve <checks notes> “technically difficult stuff like math or physics”
    user avatar
    kache
    @yacineMTB
    Sep 24, 2024
    it's honestly insane that we expect people to take more than 8 years to become a medical doctor. it should take 2 years max, it's all memorization anyways. it's not technically difficult stuff like math or physics
    891K

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