Chih-Shan Jason Chen, MD, PhD, FAAD

About Me

I am a dermatologic surgeon who specializes in caring for people with basal cell carcinoma, squamous cell carcinoma, and early-stage melanoma, as well as other rare forms of skin cancer. As Director of Dermatologic Surgery at MSK Skin Cancer Center Hauppaugue, I lead a team of skilled physician assistants, nurses, patient care technicians, and laboratory staff providing high-quality skin cancer care to residents of Long Island.

The main focus of my practice is dermatologic surgery to remove skin cancers as well as skin reconstruction. I completed fellowship training in dermatologic surgery, and have particular expertise in a technique called Mohs surgery. Mohs surgery is an excellent option for people with nonmelanoma skin cancers located in delicate areas of the body. It has an extremely high cure rate and offers excellent cosmetic outcomes.

I believe that high-quality skin cancer care is compassionate and comprehensive. To me, this means not only curing the disease, but paying close attention to my patients’ personal preferences, comfort, and quality of life. I am grateful for the trust that patients place in my hands when they choose me for their care.  

With more than 20 years of experience, I continue to be fascinated and curious about the field of dermatology. I am constantly looking for new ways to enhance the techniques I use to treat patients, whether that means refining an existing approach or developing a new one.

My specific research focus is on sophisticated optical imaging devices called reflectance confocal microscopy and optical coherence tomography. These state-of-the-art technologies are not in wide use today, but in the future they may offer a noninvasive alternative to skin biopsy and help guide other aspects of skin cancer management. MSK’s Dermatology Service is at the forefront of this leading-edge technology and I’m proud to be a part of it.

  • Clinical Expertise: Dermatologic Surgery; Mohs Micrographic Surgery; Cutaneous Laser Surgery; Skin Cancer; Squamous Cell Carcinoma; Basal Cell Carcinoma; Early-Stage Melanoma; Atypical Nevi; Dermatofibrosarcoma Protuberans; Atypical Fibroxanthoma; Malignant Fibrous Histiocytoma; Sebaceous Carcinoma; Porocarcinoma; Microcystic Adnexal Carcinoma
  • Languages Spoken: English
  • Education: MD, Chung-Shan Medical University; PhD, University of Pennsylvania
  • Residencies: Internal Medicine - Yale University; Dermatology - SUNY at Stony Brook
  • Fellowships: Mohs Micrographic Surgery - SUNY at Stony Brook
  • Board Certifications: Dermatology; Mohs Micrographic Surgery


 Chen CSJ, Elias MD, Busam KJ, Rajadhyaksha M, Marghoob AA.  Multi-modal In Vivo Optical Imaging, Including Confocal Microscopy, Facilitate Pre-surgical Margin Mapping for Clinically Complex Lentigo Maligna Melanoma. Brit J Dermatol 2005; 153 (5): 1031-1036.

Thosani MK, Marghoob AA, Chen CSJ. Current Progress of Immunostains in Mohs Micrographic Surgery: A Review.  Dermatol Surg 2008;34(12):1621–1636

Chen CSJ, Sierra H, Cordova M, Rajadhyaksha, M. Confocal Microscopy Guided Laser Ablation for Superficial and Early Nodular Basal Cell Carcinoma. A Promising Surgical Alternative for Superficial Skin Cancers. JAMA Dermatol. 2014 Sep 150(9):994-8.   

Bajaj S, Chen CSJ.  Patch Splinting for Atrophic or Tight Skin Excision Wounds. Dermatol Surg 2016 Oct 42(10): 1225-1227.

Sahu A, Yelamos O, Iftimia N, Cordova M, Alessi-Fox C, Gill M, Maguluri G, Dusza SW, Navarrete-Dechent C, Gonzalez S, Rossi AM, Marghoob AA Rajadhyaksha M, Chen CSJ, Combined handheld reflectance confocal microscopy-optical coherence tomography probe for detection and depth assessment of basal cell carcinoma: a prospective pilot study. JAMA Dermatol 2018 June.

Navarrete-Dechecnt C, Liopyris K, Cordova M, Busam KJ, Marghoob AA, Chen CSJ. Reflectance confocal microscopy and en face histopathology correlation of the dermoscopic feature of ‘circle within a circle’ in lentigo maligna. JAMA Dermatol 2018 July.


Visit PubMed for a full listing of Chih-Shan Jason Chen’s journal articles

Pubmed is an online index of biomedical articles maintained by the U.S. National Library of Medicine and the National Institutes of Health.

Clinical Trials

As home to one of the world’s top cancer research centers, Memorial Sloan Kettering is typically involved in more than 900 clinical trials at a given time. Currently, clinical trials focused on the conditions I treat are enrolling new patients. If you’re interested in joining a clinical trial, click to learn about the trial’s purpose, eligibility criteria, and how to get more information.

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Most major health insurers offer plans that include MSK as one of their in-network providers. If MSK is in-network, it means all our doctors are too. Medicaid and New York State Medicare also provide benefits for care at MSK.

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