There's no single best way to craft an after hours greeting. The most important point is that you equip your customers with what they need to know, and give them an avenue to contact you, whether that's through voicemail, email, or other channels.
Hello, you have reached Dr. A. We are busy assisting patient on the another line. Please, leave your details, including the case number if applicable, name, and phone number. For a medical emergency, hang up and call 911.

Our voicemail prompts and recordings allow you to guide callers through the phone system in a number of ways. Important information can be imparted while your caller is on hold, such as queue times and caller number. You can even up your marketing game by using this opportunity to build interest about products and services you offer.
40 Voicemail Greetings & Phone Message Templates [Business, Funny, Professional] Nowadays most people rely on their phones so much that it’s basically become a part of our lifestyle. They used to be just a device which can be used to talk and communicate verbally.