ייחוד במד"א בשבת

I am to start a "Cardiac Rehabilitation" program this week. They have asked me to fill out a "Health Care Proxy." Part of that is

Shalom. I am a physician in the US and had purchased many years ago a shabbat phone form zomet. Recently I spoke to Rabi Tendler

Dear Sirs, I have read your IRP with interest, and I thank you for this valuable service. I wonder if I might ask your help