Who called from 5594756404

I keep getting a call from this number on my cell phone...they won't leave a message, and I won't/don't answer calls from numbers I don't know! Does anybody have any idea who this is from/belongs to??

I got one today myself.  Are you in the Fresno, CA area by chance?  559 is our area code here.  Anyone know who this is?

This person calls me from this number, the 559-475-6445, and 475-6403. I never pick up, but they always call me like three or four times a week!

Just received text messages which read - Please confirm 9– 9:15 AM appointment for your insurance wellness exam"
2nd text reads
"Also blood and urine test"
I have no idea who this is. I have not scheduled anything like this ever so I'm not responding because they are likely trying to get my personal information.

It's Sidhu Allergy :)