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Oscar Colegio, MD, PhD

Associate Professor Adjunct - Dermatology

Contact Information

Oscar Colegio, MD, PhD

Patient Care Locations

Office Location

Mailing Address

  • Dermatology

    333 Cedar Street, LMP 5040, PO Box 208059

    New Haven, CT, 06520-8059

    United States



Oscar R. Colegio, MD, PhD, is an Associate Professor of Dermatology, Pathology and Surgery at Yale School of Medicine where his clinical practice and research is focused on immunodeficiency-associated skin cancers and skin disorders associated with solid organ transplantation. His research has centered on defining the role of immune cells called macrophages in tumor progression. The focus of these studies has been to identify pathways of tumorigenesis critical to a variety of murine tumor types including lung carcinoma, melanoma, colon carcinoma and cutaneous squamous cell carcinoma. Parallel studies in identifying tumor-promoting pathways induced by infiltrating macrophages in human squamous cell carcinomas from immunosuppressed vs non-immunosuppressed patients is the current focus of the lab.

Dr. Colegio was a Scholar of the Yale Center for Clinical Investigation and was supported by the Yale SPORE in Skin Cancer and the Dermatology Foundation. He is currently funded through the National Cancer Institute. Dr. Colegio is a member of several professional organizations related to his clinical and research interests. He is on the board of directors of the International Transplant Skin Cancer Collaborative, where he serves as the Director of the Committee for Research.

Dr. Colegio is a graduate of The University of Texas, where he earned a BS in Pharmacy in 1995, and of Yale University where he earned a PhD in Cell Biology in 2003 and an MD, with election to Alpha Omega Alpha, in 2004. He completed an Internship in Internal Medicine and a Residency in Dermatology at Yale-New Haven Hospital during which time he was awarded the Hugh L. Dwyer Award for clinical excellence.

Education & Training

  • MD
    Yale University School of Medicine (2004)
  • PhD
    Yale University (2003)
  • BS
    University of Texas at Austin (1995)
  • Postdoctoral Fellow
  • Resident
  • Intern

Honors & Recognition

AwardAwarding OrganizationDate
Young Investigator AwardAmerican Academy of Dermatology2017
Young Physician-Scientist AwardAmerican Society for Clinical Investigation2015
Hugh Dwyer Award for Clinical ExcellenceYale New Haven Hospital2008
Alpha Omega Alpha2004

Departments & Organizations