MSK dermatologic surgeon Jason Chen

Chih-Shan Jason Chen, MD, PhD, FAAD

Mohs Surgeon


Director of Dermatologic Surgery, Hauppauge

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

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Accepted Insurance Providers

Dr. Chen accepts the following list of insurance providers. Select your insurance provider to see more details.

Contact and Location

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Find a Convenient Location

Memorial Sloan Kettering has locations throughout New York City, Long Island, New Jersey, and Westchester. These locations offers many services, including screening, chemotherapy, and medical testing.

About Me


MD, Chung-Shan Medical University; PhD, University of Pennsylvania


Internal Medicine - Yale University; Dermatology - SUNY at Stony Brook


Mohs Micrographic Surgery - SUNY at Stony Brook

Board Certifications

Dermatology; Mohs Micrographic Surgery

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.


Doctors at Memorial Sloan Kettering work as teams, with specialists from all different areas. This allows us to consider all your needs together, and to give you the best possible care.

Clinical Trials

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Find a Clinical Trial for You

Memorial Sloan Kettering's doctors and scientists are constantly developing new treatments for cancer. MSK is typically running hundreds of clinical trials at a given time.

You may be able to participate in a clinical trial even if you are new to MSK. Search our online directory to find trial information and see more about who can participate.

Research and Publications

 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.


Publications on PubMed

Visit PubMed for a full listing of Dr. Chen’s journal articles. Pubmed is an online index of research papers and other articles from the US National Library of Medicine and the National Institutes of Health.