Buffalo Cardiology and Pulmonary Associates is closing after 40 years in business.

A statement from the Main Street business in Williamsville says the changing model of health care has made it tough financially to remain open. All 16 doctors will move to other practices once the office closes May 20.

Some of the 83 other employees are expected to move with them. No specific numbers were given on how many will be able to move and how many will be laid off.

Patients can move with their doctors.