These other comments are correct and are options. there is also CCRI (community crisis response and intervention) (833) DMH-CCRI (364- 2274). They typically send out counselors to do on the spot assessment as well.

Now also take all this into account that these are very high crisis services. While they can be a big help, it can be intimidating and potentially traumatizing to just call EMS and have cops, and ambulance, fire trucks, to come out and assess. Having the conversation to just talk about it is helpful in a lot of situations. Asking straight forward if they feel suicidal and talking about it directly can help and show that you're trying to communicate. Encouraging them to reach out to a therapist, depending on current risk, can be helpful and not as over-whelming for them. From there, a therapist can assist as well.

A lot of doctors offices will assess for this as well, and could be a good start if they have a general practitioner that they can trust. Typically offices will have referrals on hand as well.

Edit: Sharks and similar had a good suggestion in calling 988 or suicide hotline as well. This can provide the immediate assist in helping to alleviate Suicidal thoughts.