Clinical Faculty

Maria Tsoukas, MD, PhD.
Department Head
Professor of Dermatology

Dr. Maria Tsoukas is the head of the Department of Dermatology at UI Health. Dr. Tsoukas specializes in the diagnosis, management, and treatment of patients who are at high risk for skin cancer and those with chronic immunosuppression or autoimmune diseases. She has a strong focus on non-invasive field therapies, photodynamic therapy, and skin laser therapy to treat benign and malignant skin conditions, and her clinical interests also include noninvasive skin rejuvenation using injectable botulinum toxin and fillers. Dr. Tsoukas’ research focuses on photobiology/photodynamic therapy; laser tissue interactions and drug delivery; field cancerization therapies; and tissue repair.

Clinical Interests: General and skin surgery, high risk skin cancer patients, transplant and immunosuppression, skin care for the cancer patient (under chemotherapy), cutaneous laser surgery, photodynamic therapy, aesthetic dermatology, injectable cosmetic procedures

Research Interests: Photobiology and photodynamic therapy, field cancerization therapies, laser therapies in neurocutaneous and skin vascular conditions, high risk skin cancer, Lynch syndrome, skin cancer education and advocacy in disparities


  • Board Certification: American Board of Dermatology
  • Fellowship: Dartmouth Medical School
  • Fellowship: Harvard Medical School
  • Internship: Newton-Wellesley Hospital
  • Medical School: University of Athens Medical School
  • Residency: Dartmouth Medical School

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Michelle A Bain, MD
Associate Professor of Clinical Dermatology
Residency Program Director
Director of Pediatric Skin Diseases

Dr. Michelle Bain is the director of pediatric skin diseases at UI Health. Dr. Bain has special expertise in atopic dermatitis, acne vulgaris, moles, birthmarks, alopecia, vitiligo, and warts. She has been practicing dermatology for more than 30 years.


  • Board Certification: American Board of Dermatology
  • Medical School: University of Illinois College of Medicine
  • Residency: University of Illinois Medical Center at Chicago
  • Internship: Weiss Memorial

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Sheryl Hoyer, MD
Assistant Professor of Clinical Dermatology
Assistant Program Director of Medical Student Education

Sheryl Hoyer, MD, is a board-certified dermatologist who has practiced in the Chicagoland area for almost 25 years. She practices general medical dermatology and cosmetic dermatology. Her interests include systemic medications for psoriasis and eczema, skin cancer and actinic keratosis prevention and treatment (including good field treatment for AKs such as traditional topical prescriptions, PDT, and chemical peels), isotretinoin for acne, and cosmetic filler/neurotoxin treatments. Dr. Hoyer stays active in the dermatology community having recently finished her reign as vice president of the Illinois Dermatological Society and having successfully lobbied with other board members to prohibit Illinois minors from using tanning beds. She earned her medical degree from the University of Chicago and was an internal medicine intern at Northwestern before completing her dermatology residency at Cook County Hospital, serving as chief resident. She has practiced for 20 years in a private practice in the northwestern suburbs, but has also worked with dermatology residents at the University of Chicago for four years and most recently with family medicine residents at Northwestern for three years.


  • Internship: Northwestern Memorial Hospital — Chicago, IL
  • Medical School: University of Chicago
  • Residency: Cook County Health — Chicago, IL
  • Board Certification: Dermatology

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Vassilios Dimitropoulos, MD
Assistant Professor of Clinical Dermatology
Director of Dermatologic and Mohs Micrographic Surgery

Dr. Vassilios Dimitropoulos is a board-certified dermatologist at UI Health. Dr. Dimitropoulos specializes in skin cancer and is fellowship-trained in Mohs surgery as a treatment for skin cancer.


  • Board Certification: American Board of Dermatology
  • Fellowship: Rush University Medical Center
  • Internship: Rush University Medical Center
  • Medical School: Rush University
  • Residency: University of Michigan

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Dr. Roger Haber
Assistant Professor of Dermatology

Associate Program Director

Dr. Haber was previously a full-time dermatologist and the Program Director of residency at Saint Georges Hospital University Medical Center in Beirut. He graduated from the Faculty of Medicine at Saint Joseph University in Beirut and Hotel-Dieu de France, and completed his residency in Hôpital Saint Louis in Paris, with a fellowship in onco-dermatology and inflammatory skin diseases. He is a fellow of the European Board of Dermatology and Venereology and a member of the Lebanese and the French Societies of Dermatology. He is also author and reviewer of many publications in prestigious international academic journals.


  • Residency: Hôpital Saint Louis — Paris
  • Fellowship: Hôpital Saint Louis — Paris
  • Medical School: Saint Joseph University of Beirut/Hotel-Dieu de France — Lebanon

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Dr. Paul Storrs
Clinical Assistant Professor of Dermatology

Dr. Paul A. Storrs is a dermatologist in Chicago, Illinois and is affiliated with University of Illinois Hospital. He received his medical degree from University of Illinois College of Medicine at Chicago, and he has been in practice for more than 20 years. 

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Research Faculty

Dr. Kamran Avanaki
Associate Professor of Dermatology
Associate Professor of Biomedical Engineering

Kamran Avanaki is currently an Associate Professor of Biomedical Engineering and Dermatology Department at the University of Illinois in Chicago. Prior to this position, he was an Associate Professor of Biomedical Engineering Department at Wayne State University. He received his Ph.D. degree from the University of Kent, the United Kingdom with an Outstanding Achievement Honor in Medical Optical Imaging and Computing in 2012. His areas of expertise are design and development of photoacoustic imaging technology and optical coherence tomography for biomedical applications to solve critical problems in brain and skin imaging. As principle investigator, he has received multiple research grants/ fellowships including two NIH R01s, and a Melanoma Research Alliance Grant. He has received several other awards including Michigan Translational Research and Commercialization (MTRAC), American Cancer Society Seed Award, The Tech Transfer Talent Network (T3N) Award, Michigan Children’s Hospital Foundation Award, Entrepreneurship and the Anderson Institute Award, Richard Barber Interdisciplinary Research Award, Albert and Goldye J. Nelson Award, and Dean’s Diversity Fellowship. He has published in numerous high-level journals such as, PNAS, Cancer Research, IEEE Transaction of Biomedical Imaging, Photoacoustics, Journal of Biomedical Optics, Optics Letters, Applied Optics, and IEEE Journals including more than 80 first-authored/ senior authored peer-reviewed articles. His Google Scholar citation is over 2100 with an h-index of 23. In addition to serving on the technical program committees for SPIE PW, IEEE ICIP, ICACCI and MICCAI conferences, he has delivered 46 keynotes, plenary, or invited talks, and presented papers at several conferences across the globe, such as IEEE Photonics, MICCAI, MIUA, MVIP, as well as SPIE Photonics West. He is an associate editor of Applied Optics Journal and Frontiers in Neuroscience. He is also an active reviewer of 20 journals including PNAS, PLOS ONE, Cancer Research, Scientific Report, IEEE Transactions on Medical Imaging, MICCAI, Journal of Biomedical Optics, Applied Optics, Optics Letters, Optics Express, and Sensor. He has mentored /co-mentored more than 30 graduate students and has been awarded the Outstanding Faculty Award three times (in 2016, 2017, and 2019) at Wayne State University. He also received the Research Excellence Award and Excellence in Teaching Award in 2019 from the Engineering School at Wayne State University. He has also received the Wayne State University Academy of Scholars Junior Faculty Award in 2020.

Academically Associated Faculty

Iris K. Aronson, MD
Associate Professor Emerita of Dermatology

Dr. Iris Aronson practices in the Department of Dermatology at UI Health. Dr. Aronson’s primary specialties include alopecia, bullous diseases, connective tissue disease, dermatomyositis, lupus, and panniculitis. She also focuses on treating skin conditions related to women, including pregnancy-related dermatological problems.