Jonathan S. Leventhal, MD



Conditions & Treatments

Congenital Nevus, Dermatology, Dermatophyte Infections, Electrosurgery, Intertrigo, Itching, Melanoma, Rashes

(203) 789-1249
Accepting New Patients
Telehealth Visits


Jonathan Leventhal, MD, is the director of the Onco-Dermatology Program at Smilow Cancer Hospital at Yale New Haven. He treats patients undergoing cancer treatment who experience itchy or painful rashes, as well as hair and nail changes that can result from either their disease or treatment, including chemotherapy, immunotherapy, radiation or stem cell transplantation. 

“One of the most rewarding aspects of my job is improving the quality of life for patients with cancer who are affected by adverse skin events,” he says.

Seeing an onco-dermatologist like Dr. Leventhal can make the difference between a patient being able to continue receiving a cancer treatment or having to be taken off it when the skin conditions become too severe. “If left untreated, some skin, hair and nail conditions can become quite debilitating, even disfiguring and may negatively impact health and ability to perform day-to-day activities,” says Dr. Leventhal. He helps to manage these skin problems so that patients with cancer can continue their treatments and enjoy a better quality of life.

In addition to his role at Smilow, Dr. Leventhal, an assistant professor of dermatology at Yale School of Medicine, cares for patients with a wide range of skin conditions in Yale Medicine Dermatology’s New Haven and Branford locations. He performs routine skin cancer screening examinations and also treats general skin problems—from acne to psoriasis to eczema. He is also the associate residency program director and is principal investigator of several clinical trials involving the management of cutaneous reactions to cancer therapy.

"Every day I am excited to come to work, treating various skin conditions affecting my patients and helping patients with cancer continue their potentially life-saving treatments,” says Dr. Leventhal. “Skin diseases can impact the way people see themselves and can affect how people feel, both physically and emotionally. My work is particularly gratifying when I can improve my patients' overall comfort, happiness and health.”





Affiliated With

Smilow Cancer Hospital, Yale Medicine


Yale Medicine Dermatology Associates

2 Church St South
Suite 305
New Haven, CT 06519

Get Directions

(203) 776-6188

Smilow Cancer Hospital

35 Park Street
New Haven, CT 06519

Get Directions

Yale Medicine Dermatology Associates

322 East Main St.
Suite 2G
Branford, CT 06405

Get Directions

(203) 481-2830

Yale Medicine Dermatology Associates

322 E. Main St
Suite 2G
Branford, CT 06405

Get Directions

(203) 481-2830

Cornell Scott - Hill Health Center

150 Sargent Drive
New Haven, CT 06511

Get Directions

Monday9:00 AM - 5:00 PM
Tuesday9:00 AM - 5:00 PM
Wednesday9:00 AM - 5:00 PM
Thursday9:00 AM - 5:00 PM
Friday9:00 AM - 5:00 PM
(203) 503-6579

Education & Training


New York University


Winthrop-University Hospital


Yale University School of Medicine

Accepted Insurance

Insurance coverage regularly changes, please contact the doctor’s office directly to verify that your specific insurance plan is accepted.

  • aetna
  • anthem bc/bs
  • berkeley care network
  • cigna healthcare
  • community care network
  • connecticare
  • corvel
  • first health network
  • focus healthcare
  • great west
  • husky
  • medicaid
  • medicare
  • multiplan
  • oxford health plans
  • railroad medicare
  • tricare/champus
  • united healthcare
  • us family health plan
  • wellcare