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Ronald J Sweren, M.D.

Headshot of Ronald J Sweren
  • Director, Phototherapy/Photopheresis Program, Department of Dermatology
  • Assistant Professor of Dermatology


Cutaneous Lymphoma, Dermatology, Medical Dermatology, Melanoma more

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Johns Hopkins Medicine - Green Spring Station

Appointment Phone: 410-955-5933
10755 Falls Road
Pavilion I Suite 350
Lutherville, MD 21093 map
Fax: 410-847-3766

Johns Hopkins Outpatient Center

Appointment Phone: 410-955-5933
601 N. Caroline St.
Baltimore, MD 21287 map
Phone: 410-955-5933 | Fax: 410-955-5322


Dr. Ronald Sweren is an assistant professor of dermatology at the Johns Hopkins University School of Medicine. His areas of clinical expertise include cutaneous lymphoma/mycosis fungoides, phototherapy/ photopheresis and melanoma. Dr. Sweren also serves as director of the Phototherapy/Photopheresis Program in the Department of Dermatology.

Dr. Sweren earned his M.D. from the University of Maryland School of Medicine. He completed his residency in dermatology at University of Maryland Medical Center and in pediatrics at Sinai Hospital of Baltimore.

He is certified by the American Board of Dermatology and the American Board of Pediatrics. more


  • Director, Phototherapy/Photopheresis Program, Department of Dermatology
  • Assistant Professor of Dermatology

Departments / Divisions



  • MD; University of Maryland School of Medicine (1976)


  • Pediatrics; Sinai Hospital of Baltimore (1979)
  • Dermatology; University of Maryland Medical Center (1982)

Board Certifications

  • American Board of Dermatology (Dermatology) (1982)
  • American Board of Pediatrics (Pediatrics) (1981)

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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