About
Dr. Barrie Weinstein is the Medical Director of Well by Messer’s Upper East Side location. She brings over twenty years of experience to the practice. Dr. Weinstein earned her medical degree from the Sackler School of Medicine. She then completed her residency and fellowship at Mount Sinai Hospital. She is the first doctor in her family. A personal family health experience inspired her to provide personalized care. She holds board certifications in endocrinology, internal medicine, and nutrition.
Education & Training
Undergraduate
Binghamton University
Medical School
Sackler School of Medicine
Residency
Residency in Internal Medicine at Mount Sinai Hospital
Fellowship
Fellowship in Endocrinology, Diabetes and Bone Disease at Mount Sinai Hospital
Certifications
Conditions Treated
Who is Dr. Weinstein right for?
Dr. Weinstein is ideal for patients seeking an experienced endocrinologist for complex conditions. Her expertise in metabolic health, bone disease, and thyroid disorders is a key asset. Patients who value an evidence-based approach to care will work well with her. With over two decades in practice, she managing both common and rare endocrine issues.
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Frequently Asked Questions
Dr. Barrie Weinstein specializes in endocrinology, diabetes, and bone disease. She is also a board-certified Physician Nutrition Specialist. Her clinical focus includes metabolic health, thyroid disease, and providing advanced, evidence-based care for other endocrine issues.
Dr. Weinstein has over 20 years of experience as an endocrinologist. Before joining Well by Messer, she spent 18 years at the Faculty Practice of The Mount Sinai Hospital. She now serves as the Medical Director for Well by Messer's Upper East Side location.
Yes, Dr. Weinstein holds multiple board certifications. She is board certified in Endocrinology, Diabetes and Metabolism, as well as Internal Medicine. She also holds certification as a Physician Nutrition Specialist and in Clinical Densitometry.
Dr. Weinstein graduated from Binghamton University and the Sackler School of Medicine. She completed her residency in Internal Medicine at Mount Sinai Hospital. She also finished her fellowship in Endocrinology, Diabetes and Bone Disease at Mount Sinai.
Dr. Weinstein serves as the Medical Director of Well by Messer’s Upper East Side office. In this role, she oversees clinical operations at that location. She also provides expert care to her own panel of patients.
Doctor profile last updated June 12, 2026