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Gulsun Erdag, M.D.

Photo of Dr. Gulsun Erdag, M.D.

Assistant Professor of Dermatology


Languages: English, French, Turkish

Expertise: Dermatology, Dermatopathology


Johns Hopkins Outpatient Center

601 N. Caroline St. Baltimore, MD 21287 map

Phone: 410-955-3484

The Johns Hopkins Hospital (Main Entrance)

1800 Orleans St. Sheikh Zayed Tower Baltimore, MD 21287 map

Phone: 410-955-3484

Johns Hopkins Bayview Medical Center

4940 Eastern Avenue Baltimore, MD 21224 map

Phone: 410-955-3484


Dr. Gulsun Erdag is an assistant professor of dermatology at the Johns Hopkins University School of Medicine. Her areas of clinical expertise include dermatology and dermatopathology.

She earned her M.D. from Hacettepe University Faculty of Medicine. She completed a residency in pediatric surgery at Dokuz Eylul University School of Medicine, a residency in pathology at Lenox Hill Hospital and a residency in pathology at MedStar Georgetown University Medical Center. She performed a fellowship in cytopathology at the National Institutes of Health and a fellowship in dermatopathology at the University of Virginia. more


  • Assistant Professor of Dermatology

Departments / Divisions



  • MD, Hacettepe University Faculty of Medicine (1987)


  • Dokuz Eylul University School of Medicine / Pediatric Surgery (1983)
  • Lenox Hill Hospital / Pathology (2005)
  • MedStar Georgetown University Medical Center / Pathology (2008)


  • National Institutes of Health / Cytopathology (2009)
  • University of Virginia School of Medicine / Dermatopathology (2011)

Board Certifications

  • American Board of Pathology / Cytopathology (2009)
  • American Board of Pathology / Dermatopathology (2011)

Research & Publications

Selected Publications

Smith SDB, Erdag G, Cuda JD, Rangwala S, Girardi N, Bibee K, Orens JB, Prono MD, Toptan T, Loss MJ. "Treatment of human polyomavirus-7-associated rash and pruritus with topical cidofovir in a lung transplant patient: Case report and literature review." Transpl Infect Dis. 2018 Feb;20(1). doi: 10.1111/tid.12793. Epub 2017 Nov 26.

Obeid JM, Hu Y, Erdag G, Leick KM, Slingluff CL Jr. "The heterogeneity of tumor-infiltrating CD8+ T cells in metastatic melanoma distorts their quantification: how to manage heterogeneity?" Melanoma Res. 2017 Jun;27(3):211-217. doi: 10.1097/CMR.0000000000000330.

Ladoire S, Senovilla L, Enot D, Ghiringhelli F, Poirier-Colame V, Chaba K, Erdag G, Schaefer JT, Deacon DH, Zitvogel L, Slingluff CL Jr, Kroemer G. "Biomarkers of immunogenic stress in metastases from melanoma patients: Correlations with the immune infiltrate." Oncoimmunology. 2016 Mar 16;5(6):e1160193. doi: 10.1080/2162402X.2016.1160193. eCollection 2016 Jun.

Obeid JM, Erdag G, Smolkin ME, Deacon DH, Patterson JW, Chen L, Bullock TN, Slingluff CL. "PD-L1, PD-L2 and PD-1 expression in metastatic melanoma: Correlation with tumor-infiltrating immune cells and clinical outcome." Oncoimmunology. 2016 Sep 20;5(11):e1235107. doi: 10.1080/2162402X.2016.1235107. eCollection 2016.

Guss LG, Balagula Y, Doig S, Erdag G, Okoye GA. "Granulomatous slack skin in an adolescent girl." Journal of Drugs in Dermatology. 2015 Feb 14;2:202-203.

Patient Ratings & Comments

The Patient Rating score is an average of all responses to physician related questions on the national CG-CAHPS Medical Practice patient experience survey through Press Ganey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Comments are also gathered from our CG-CAHPS Medical Practice Survey through Press Ganey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.

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