Tel Hashomer, also known as the Sheba Medical Center, in suburban Tel Aviv, has set up a field hospital in Ukraine. Israel's field hospital is the first foreign medical team to arrive and begin caring for hundreds of refugees each day. Medical volunteers are caring daily for long queues of people, many of them elderly.
The Los Angeles Jewish Journal has published a first person account - https://jewishjournal.com/my-turn/346691/what-israel-is-doing-in-ukraine
More pictures of Israel's field hospital in Ukraine were published in the Jerusalem Post - https://www.jpost.com/international/article-702315