LeonardHarrySigalMDFACP, FACR

Lupus & Related, Rheumatoid Arthritis & Related, Vasculitis

Clinical Professor, Departments of Medicine and Pediatrics President, Gateway Immunosciences CMO, Aserton Pharmaceuticals

Dr. Sigal is on Doximity

As a Doximity member you'll join over two million verified healthcare professionals in a private, secure network.

Gain access to free telehealth tools, such as our “call shielding” and one-way patient texting.
Connect with colleagues in the same hospital or clinic.
Read the latest clinical news, personalized to your specialty.

I am a rheumatologist and immunologist serving as a consultant to pharma and potential investors. I have had the privilege of being part of due diligence meetings, as well as advising VC and other groups about the mechanism of molecules under consideration and their potential clinical targets, anticipated usefulness in clinical practice, and expected uptake in the clinical community. I was in academia for 20 years and then worked with big and small pharma while employed by BMS, NovoNordisk, and PAREXEL. My subsequent experience as an independent consultant has allowed me to work in additional molecular types and clinical specialties.

Yale-New Haven HospitalPost-Doctoral Fellowship, Clinical Immunology, 1982 - 1984
Yale-New Haven Medical CenterFellowship, Rheumatology, 1981 - 1984
Yale School of Medicine1981 - 1984
Icahn School of Medicine at Mount Sinai/Mount Sinai HospitalResidency, Internal Medicine, 1977 - 1979
Icahn School of Medicine at Mount Sinai/Mount Sinai HospitalInternship, Internal Medicine, 1976 - 1977
Stanford University School of MedicineClass of 1976