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Dr. Leyden is on Doximity

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Education & Training

  • University of Pennsylvania Health System
    University of Pennsylvania Health SystemResidency, Dermatology, 1967 - 1972
  • Temple University Hospital
    Temple University HospitalInternship, Internal Medicine, 1966 - 1967
  • Perelman School of Medicine at the University of Pennsylvania
    Perelman School of Medicine at the University of PennsylvaniaClass of 1966

Certifications & Licensure

  • PA State Medical License
    PA State Medical License 1967 - 2024
  • American Board of Dermatology Dermatology

Clinical Trials

Publications & Presentations

PubMed

Lectures

  • Acne and Rosacea 
    American Academy of Dermatology - Annual Meeting 2019 - Washington, D.C. - 3/3/2019

Press Mentions

  • Tretinoin Review with Newer Formulations: Providing Effective and Tolerable Solutions in Clinical Practice
    Tretinoin Review with Newer Formulations: Providing Effective and Tolerable Solutions in Clinical PracticeJanuary 1st, 2023
  • Penn Research Finds Psoriasis Medication Apremilast Leads to Fat Loss in People with Psoriasis
    Penn Research Finds Psoriasis Medication Apremilast Leads to Fat Loss in People with PsoriasisSeptember 21st, 2022
  • Dermatologists’ Role in the Development of the Skin Care Industry
    Dermatologists’ Role in the Development of the Skin Care IndustryOctober 22nd, 2020
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Grant Support

  • Accutane NF And Oral Contraceptive Tablets In Premenopausal Women W Nodular AcneNational Center For Research Resources2000–2002

Hospital Affiliations