Markus Daniel Boos, MD, PhD

Markus Daniel Boos, MD, PhD

Dermatology, Vascular Anomalies

On staff since July 2015

Academic Title: Associate Professor

Research Center: Center for Clinical and Translational Research

"My interest in Dermatology stemmed from my mom's diagnosis of melanoma, as well as my interest in our immune system. It was when I started caring for children with skin disorders, however, that I knew I had found my calling. Specializing in pediatric dermatology brings me so much joy: from a patient's smile when discussing Pokemon, Paw Patrol and superheroes with them, to improving a parent's understanding of their child's skin condition or advocating for the health and well-being of the children and families I am lucky enough to serve. I am so grateful to be entrusted by parents to care for their children, and to have the opportunity to do something that I love every day."

  • Markus Boos, MD, PhD is an attending pediatric dermatologist at Seattle Children's Hospital and is an Associate Professor in the Department of Pediatrics at the University of Washington School of Medicine. He is also the Associate Program Director for the Dermatology Residency Program at the University of Washington.

    Dr. Boos was raised in the suburbs of Detroit and received a BA in Biology and Economics from Kalamazoo College in Kalamazoo, MI. He subsequently joined the Medical Scientist Training Program at the University of Chicago, where he obtained his MD and a PhD degree in Immunology. He completed an internship in Pediatrics at the University of Chicago's Comer Children's Hospital before joining the Hospital of the University of Pennsylvania as a Dermatology resident. There he served as chief resident during his final year before completing a fellowship in Pediatric Dermatology at the Children's Hospital of Philadelphia.

    Dr. Boos enjoys caring for all children with skin disorders but has a special interest in LGBTQIA2S+ health, the effects of climate change (including wildfires) on the skin, and the cutaneous manifestations of Primary Immunodeficiency Disorders (PIDDs). When not seeing patients, you can find him teaching residents, giving talks, working to reduce healthcare disparities and helping Seattle Children's administration meet its carbon neutral goal by 2025.

    As a gay father, Markus enjoys watching Survivor and playing Mario Kart with his twin boys. He also enjoys weightlifting, biking and swimming in Lake Washington. He cheers for the LVR Golden Warriors, Detroit Red Wings, the San Antonio Spurs and has adopted the Seahawks as his pro football team.

    Dr. Boos, like all of Seattle Children's, values diversity and welcomes all patients and their families, regardless of race, ethnicity, religion, socioeconomic status, political affiliation, sex, gender identity or sexual orientation. Our clinic is a safe space where everyone is valued for who they are.

    • Roxayne Tacoma, WA 03.27.19

      Dr. Boos has been such a blessing to our family. My daughter was born with a strawberry birthmark on her right shoulder. About a year ago it began to change and we weren't sure what was going on with it. After about a month of taking her to her primary it wasn't getting any better. They finally sent me to a dermatologist. That dermatologist got the ball rolling and referred us to Seattle Children's where we finally met doctor Boos for long term treatment. By this point my daughter's birthmark had become ulcerated and was very painful for her. Dr. Boos was able to help us treat it and was very supportive about any medical decision that we decided to do. He gave us the options and supported our choices. Shortly after my daughter's birth mark started to heal she had a mole appear on her face. Doctor Boos removed it and did a beautiful job. The day of her procedure I was a pretty nervous mom but he did everything he could to make me feel comfortable and ease the anxiety I was having. Almost a year later there's hardly any mark on her face. Today I had to take her back in because she had another mark appear on her face that I was concerned about considering her history. Originally they couldn't get me in to see him until June. In the mean time doctor Boos told me to send him some pictures via email so he could at least take a look at it. He made my daughter an appointment within a few weeks. I found this to just be so thoughtful and caring on his part. He cared enough about my daughters health that he went out of his way to make sure she could get seen sooner than June. You can see the passion that he has for his job and I'm just very thankful that we have him for my daughter to continually go to as she grows and deals with skin changes. He's amazing and was a huge answer to prayer. Thank you Dr. Boos for all you do.

    • BOBBIE East Wenatchee, WA 12.20.18

      This is my second time writing because I cannot find the right words to express my appreciation for Dr. Boos!! Seattle Children's Hospital is beyond fortunate to have this man- as we were extremely fortunate to have him as our son's Dr!! **SIGH** why can't he by my dermatologist??? Keep up the great work Dr. Boos and I truly hope that you are able to bring the same peace, comfort and incredible bedside manner to other families like you have to ours!

    • Cheyenne Puyallup, WA - Glendale, AZ 11.05.18

      First things first; I want to thank the entire Dermatology Clinic over at Children's Hospital in Federal Way! A HUGE shout out to Dr. Markus Daniel Boos. He is amazing! The first day I met him he had on his batman belt lol he is a Super Hero INDEED! My daughter had horrible eczema and she got molluscum contagion from a family member. She also has an allergy to synthetic fibers. Before seeing Dr. Boos we had terrifying experiences with other clinics. Makari's skin was raw and dry and oozing and even bleeding at times. I tried many things and took her to 4 clinics to be treated before taking her to see Dr. Boos. He expressed great concern, was patient and was also very detailed/specific with treatment options. I learned so much about the skin and skincare routines. His treatment healed my daughters skin in about 3 weeks with no scarring and after following up with him the regimen he showed me to prevent further breakouts, irritation, and dryness still works today! I am forever grateful for Dr. Boos and if your child has any issues with his/her skin I urge you to pay Dr. Boos a visit. Trust me; he'll take care of the rest. If you're reading this you probably have a child who may be suffering. I hope that you child gets well and stays well.

    • Hannah Tacoma, WA 02.20.18

      Our son suffered for months with a painful and worsening rash. We saw many doctors who were unable to correctly diagnose our son. We felt in our hearts that it would be best to take our son to Seattle Children’s Hospital. And that could not be more true. Dr. Boos took one look at our son and was able to provide us with a diagnosis. Finally. Biopsy results confirmed and Dr. Boos was so educated, informative, patient and kind when explaining Langerhans Cell Hystiocytosis to us. Dr. Boos has impeccable bedside manor and was very persistent in making sure that our son had all of the necessary procedures to check other organs for LCH. In the coming days as we learned more about our son's condition, Dr. Boos regularly called us with updates, asked if we had more questions, and genuinely cared to ask how we were doing. Dr. Boos is a blessing to our family. Because of him, our son is finally healing. We cannot put into words how grateful we are for Dr. Boos.

    • Jami Port Orchard , Washington 02.07.18

      Dr. Boos is an amazing doctor. My teenage daughter has been seeing him for her skin dermatographie for the past two years. We highly recommend him.

    • Jessica Seattle, WA 06.16.17

      Can't even being to put into words how great Dr. Boos is. In a time of great trepidation for our one year daughter's health, he was able to draw upon his past experiences and education to provide a rare diagnosis and treatment plan. Not only was his diagnosis accurate, but his bedside manor and translation science approach was both comforting while informative. We were so fortunate to have him on our team of physicians at Children's and have nothing but love and respect for such a great doctor. Seattle Children's Hospital is very lucky to have him!

    • Stephanie Woodway, WA 05.15.17

      Dr. Boos is amazing! His bedside manner is unbeatable and he's so incredibly smart and thoughtful when talking with kids and their worried parents. He knew exactly what the bump on my daughters head was, and was able to resolve it in one visit! Thank you Children's Hospital for having such a great doctor on staff.

    • Sara Poulsbo WA 04.25.17

      Dr Boos was able to dial in on my son's obscure skin condition when we were use to doctors shrugging their shoulders. Relief! He was so funny and kind with my son as well as informative to my husband and I. I am so grateful we were able to have him as a member of our care team. xoxoxo

  • Award Name Award Description Awarded By Award Date
    Seattles Top Doctor 2016 Seattle Met Magazine 2016
    Seattle Met Magazine Top Doctor 2021
    2010-2011 Intern of the Year Comer Childrens Hospital Residency Program Senior Residents
    University of Washington Pediatrics Residency Program Award for Outstanding Faculty Teaching 2017-18
    2010 Pritzker School of Medicine Outstanding Achievement Award Awarded to a graduating senior for the most outstanding achievement during 4 years of medical school
    2008, 2010 Students Teaching Students Award Awarded by Pritzker medical students for excellence as a teaching assistant University of Chicago Pritzker School of Medicine
    2008-2009 University of Chicago Committee on Immunology Best Dissertation Award Awarded for the most outstanding performance in the field of Immunology University of Chicago Committee on Immunology
    University of Washington School of Medicine Outstanding Research Mentor Award 2021
    2010 Gold Humanism Honor Society University of Chicago Chapter
    2010 Alpha Omega Alpha Illinois Beta Chapter
    2021 University of Washington Dermatology Residency Program John E. Olerud Resident Teaching Award
    Seattle Met Magazine Top Doctor 2020
    2011 Arnold P. Gold Foundation Humanism and Excellence in Teaching Award University of Chicago Chapter
    2014 Edward Bondi Teaching Award Awarded to the dermatology resident "who demonstrates exceptional dedication to the teaching and mentoring of medical students" Perelman School of Medicine Students (U. Pennsylvania)
  • Manuscripts in Refereed Journals

    • Boos MD, Ginsberg BA, Peebles JK
      Prescribing isotretinoin for transgender youth: A pledge for more inclusive care.
      30318854 Pediatric dermatology, 2018 Oct 15
    • Boos MD, Wine Lee L, Freedman JL, Novoa RA, Chu EY, Perman MJ
      Presentation of Acute Megakaryoblastic Leukemia Associated with a GATA-1 Mutation Mimicking the Eruption of Transient Myeloproliferative Disorder.
      26205501 Pediatric dermatology, 2015 Sept. : 32(5)e204-7
    • Goldbach H | McMahon C | Boos MD
      An exophytic mass on the mandible of an immunocompromised man.
      Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 2014 Feb. : 58(4)540,596-7
    • Boos MD | Yokota Y | Eberl G | Kee BL
      Mature natural killer cell and lymphoid tissue-inducing cell development requires Id2-mediated suppression of E protein activity.
      PMC2118569 The Journal of experimental medicine, 2007 May 14 : 204(5)1119-30
    • Covelli I, Ahrens K, Onchiri F, Inwards-Breland D, Boos MD
      Influence of Gender and Sexual Identity on Adolescent Skin Health
      Pediatric Dermatology
    • Boos MD, Yeung H, Inwards-Breland D
      Dermatologic Care of Sexual and Gender Minority Youth, Part 1: An Update for the Dermatologist on Providing Inclusive Care
      Pediatric Dermatology
    • Boos MD, Bozarth X, Sidbury R, Cooper AB, Perez F, Chon C, Paras G, Amlie-Lefond C
      Forehead location and segmental pattern of facial PWS predict risk of Sturge-Weber Syndrome
      Journal of the American Academy of Dermatology
    • Schachtel A, Dyer JA, Boos MD
      Climate Change and Pediatric Skin Health
      International Journal of Women's Dermatology
    • Boos, M., S.S. Samimi, A.L. Rook, A.C. Yan and E.J. Kim.
      Pityriasis Lichenoides and Cutaneous T cell Lymphoma: An Update on the Diagnosis and Management of the Most Common Benign and Malignant Cutaneous Lymphoproliferative Diseases in Children
      Curr Derm Rep, 2203-211 PMCID:DOI 10.1007/s13671-013-0054-x
    • Kalus A, Boos MD
      Caring for transgender and gender-diverse patients in phototherapy settings: better practices
      British Journal of Dermatology

    Book Chapters

    • Boos, M., K. Wanat and J. Treat
      HIV/AIDS-related Emergencies in Dermatology
      Buka’s Emergencies in Dermatology

  • Presentations Title Event Location Date
    Acne: Our Most Challenging Cases (Transgender Health) Society for Pediatric Dermatology 47th Annual Meeting Indianapolis, IN July 2022
    It Happens: Skin Cancers in Children Practical Approaches to Pediatric Dermatology in Primary Care Conference Philadelphia, PA May 2015
    Lymphoproliferative Disorders of Childhood American Academy of Dermatology Annual Meeting San Francisco, CA March 2015
    Childhood Pityriasis Lichenoides and Mycosis Fungoides: When Should I Worry?" American Academy of Dermatology Annual Meeting San Francisco, CA March 2015
    Cryptococcus Concealed Within a Lesion of Kaposi Sarcoma in an HIV Positive Man American Academy of Dermatology Annual Meeting Denver, CO March 2014
    Lipofibromatosis: An Institutional and Literature Review of an Uncommon Entity Society for Pediatric Dermatology Annual Meeting Milwaukee, WI July 2013


Board Certification(s)

Pediatric Dermatology

Medical/Professional School

University of Chicago Pritzker School of Medicine, Chicago, IL


Hospital of the University of Pennsylvania GME, Philadelphia, PA


Children's Hospital of Philadelphia, Philadelphia, PA

Clinical Interests

LGBTQIA2S+ health, interface of climate change and the skin, cutaneous manifestations of primary immunodeficiency disorders