Caitlin May, MD
Clinical Assistant Professor
Division of Dermatology
MD, Eastside Specialty Center
MD, VA Puget Sound Health Care System
MD, Dermatopathology Northwest

Faculty Information


Dr. Caitlin May is board-certified in dermatology and dermatopathology. She works as a dermatologist at the UW Medicine Eastside Speciality Center, the Teledermatology Program at the Puget Sound VA Health Care System, a dermatopathologist at Dermatopathology Northwest and Clinical Assistant Professor in the Division of Dermatology at the University of Washington. She received her MD from the University of Washington School of Medicine, where she also completed a dermatology residency and served as co-chief resident from 2016-2017. She completed a fellowship in dermatopathology at the University of Washington as well. She is an active member of numerous professional organizations including the Seattle Dermatologic Society (SDS). 

Dr. May also served as a consultant dermatopathologist at Dorevitch Pathology in Melbourne, Australia from 2018-2019. She is actively involved in research regarding the histologic diagnosis of the spectrum of melanocytic lesions and has presented numerous times at national meetings. She now lives with her husband and two young children in Kirkland, and enjoys spending time with her family, hiking and backpacking, traveling and good food.

Education & Training: 
Dermatopathology Consultant
Dorevitch Pathology
Melbourne, Australia
Fellowship in Dermatopathology
University of Washington
Seattle, WA
Residency in Dermatology
University of Washington
Seattle, WA
Internal Medicine Internship
Virginia Mason Medical Center
Seattle, WA
University of Washington
Seattle, WA
Bachelor of Science in Biochemistry
Washington State University
Pullman, WA
Chief Resident, UW School of Medicine, Division of Dermatology
Mailing Address: 

For appointments at the Eastside Specialty Center, visit the UW Medicine website.

Research & Clinical Interests
Research Interests: 

Dr. May's research interests include the accurate diagnosis of melanocytic lesions and the use of machine learning in histopathology.

Clinical Interests: 

Dr. May's clinical interests include complex medical dermatology, alopecia, melanocytic neoplasms and teledermatology.


Hadi R, Miller TI, May C, Lehman JS, Bennett DD, Piliang M, Chang O, Shinohara S. Impact of clinical photographs on the accuracy and confidence in the histopathological diagnosis of mycosis fungoidesJ Cutan Pathol. Published online December 16, 2020. PMID: 33326119.

May, CJ, Piepkorn MW, Knezevich SR, Elder DE, Barnhill RL, Lee AC, Flores MJ, Kerr KF, Reisch LM, Elmore, JG. Factors associated with use of immunohistochemical markers in the histopathological diagnosis of cutaneous melanocytic lesions. J Cutan Pathol, 2020 May 7. doi: 10.1111/cup.13736. PMID: 32383301.

Nofalla S, Mehta S, Mercan E, Knezevich S, May CJ, Weaver D, Witten D, Elmore JG, Shapiro L. Machine Learning Techniques for Mitoses Classification. Computerized Medical Imaging and Graphics, Vol 87, 2021.

Liu K, Mokhtari M, Li B, Nofallah S, May C, Chang O, Knezevich S, Elmore J, Shapiro L. Learning Melanocytic Proliferation Segmentation in Histopathology Images from Imperfect Annotations. IEEE Workshop on Computer Vision for Microscopy, 2021.

May C, LeBoit P, McCalmont T, Argenyi Z. Hypercellular Encapsulated Neuroma Imitating Desmoplastic Melanoma. Am J Dermatopathol. Accepted for publishing, September 2018.

May C, Fleckman P, Brandling-Bennett H, Cole B, Sidbury R. Lichenoid drug eruption with prominent nail changes due to leflunomide in a 12 year-old child. Pediatr Dermatol. 2017; 34(4): e225-e226.

May C, Shinohara M. Progressive, Painful Erosions of the Face, Neck, and Lips. Am J Dermatopathol. 2017; 0:1.

May C, Chang O, Compton N. A giant apocrine hidrocystoma of the trunk. Dermatol Online J. 2017;23(9).