Specialties: "Dr. Igor Kletsman is a top internist serving patients in New York City. Dr. Kletsman is located in the heart of Midtown at 23 west 45th st. between 5th and 6th avenue. As a dedicated internal medicine specialist, Dr. Kletsman works with adult patients to help them receive the individualized care they need to achieve optimal health as their needs evolve with age. His extensive ....