The man has great bedside manner but that is where it ends. Referred to office with specific dx and was treated for something else entirely different. This would mean f/u visits which of course would make $ for Dr Zwang, who will let you know that he is the one to start this lung center and la dee da da da. Not impressed and very disappointed in him. Technician Luis Cifuentes was absolutely wonderful. Hope to meet him working for another pulmonologist.