About
William Klein, MD has practiced alongside the HealthBridge team since the practice opened in 2001. He trained at the Icahn School of Medicine at Mount Sinai and completed his residency in Internal Medicine there as well. He holds board certification in Internal Medicine and serves as Assistant Clinical Professor at Mount Sinai.
Dr. Klein is a consistent Castle Connolly Top Doctors honoree. He takes a strong preventive approach to medicine and finds real satisfaction in educating patients about maintaining optimal health. He has a particular interest in managing complex clinical cases. Dr. Klein also performs non-surgical facial aesthetic treatments.
Education & Training
Medical School
Icahn School of Medicine at Mount Sinai
Residency
Internal Medicine, Icahn School of Medicine at Mount Sinai
Certifications
Conditions Treated
Who is Dr. Klein right for?
Dr. Klein is a strong fit for adults who want a physician with deep roots in preventive internal medicine. Patients with complex or multi-layered clinical conditions benefit from his experience managing nuanced cases. Those interested in non-surgical facial aesthetics will find that expertise within the same practice relationship. His long tenure at HealthBridge suits patients who value continuity of care.
Similar Doctors Nearby
Dr. David EdelsonMD, FACP
obesity, metabolic disorders, hormonal imbalances +4 more
Dr. William BergerMD
obesity, hypertension, high cholesterol +8 more
Dr. Lori Cohen
hypertension, diabetes, high cholesterol +8 more
Frequently Asked Questions
Dr. Klein specializes in internal medicine and preventive medicine. He has a particular interest in managing complex clinical cases and works to help patients maintain optimal long-term health through proactive strategies.
Yes, Dr. Klein holds board certification in Internal Medicine. He earned his medical degree and completed his residency at the Icahn School of Medicine at Mount Sinai.
Yes, Dr. Klein serves as Assistant Clinical Professor at the Icahn School of Medicine at Mount Sinai. He maintains this role alongside his full-time clinical practice at HealthBridge.
Dr. Klein is a consistent Castle Connolly Top Doctors honoree. This recognition reflects peer-nominated excellence in clinical medicine.
Yes, Dr. Klein performs non-surgical facial aesthetic treatments as part of his services at HealthBridge. Patients can discuss this within their existing care relationship.
Dr. Klein has practiced at HealthBridge since the practice opened in 2001. He is one of the founding members of the team and brings over two decades of experience to his patients.
Dr. Klein takes a strong preventive approach to medicine. He focuses on educating patients about maintaining optimal health and engages closely with those managing complex or multifaceted clinical conditions.
Doctor profile last updated March 21, 2026