Block SMS/Text messages without blocking phone calls from the same number

We are a healthcare company and provide some mental health services to our community through telehealth using RingCentral. We need to have the ability for our clients to reach their doctors and therapists via phone calls, but do not want the clients to have the ability to text our doctors and therapists. Having the ability to block text messages while still allowing phone calls from the same number would be a valuable feature to us and I would imagine other organizations as well.