833-784-1925

cold call at 12/10/21, 3 pm pst.  No message left   I called back and got answering message for Humana Pharmacy.  True that I have been using them for the last year,  but I'm wondering why the cold-call without any message?

That automated call blocking service that starts with "No" list this as a "Medicare Robocall" and flags it as "Phone Scam Alert!".
While I can find no evidence online that this number does belong to Humana, based on how Caller ID works and that it is your phone company that fills in the name information based on who the displayed number is registered to, I am going to assume that the number does actually belong to Humana.
However, that does not mean that it was Humana that actually called you.

dstandin wrote:

I'm wondering why the cold-call without any message?

The call may have been made by a would-be scammer spoofing Humana's number and they hung up when they reached your voicemail/answering machine and realized that they would not be able to ply you with their scam script.

Received several calls from this number. I googled Humana Pharmacy to get their phone number 800-379-0092 and called them. I asked if the number 833-784-1925 is legitimate for Humana Pharmacy and they said yes. (It's still possible that if someone calls you, they are spoofing the number and it's a scam. But if you call 833-784-1925 yourself, you should be fine.)

By the way, I did call 833-784-1925 and it was basically just a message suggesting that you use Humana Pharmacy mail order for your prescriptions.