Beverly Hills Gastroenterologist Helps Patients Through First Colonoscopy : Dr. Berookim is an experienced GI doctor in Beverly Hills. His goal is to make sure all of his patients are comfortable while they undergo the procedure. whether it’s your first time or your fifth. Dr. Berookim believes in patient-centered care and the importance of patient-provider communication. To that end, he will carefully explain everything to you from the initial visit to the post-exam appointment so you know what to expect.