As follow up to my post dated May 4 (Reply to Mel) I found out who these people are.

This number belongs to THE BILLING CENTER, that's how they call themselves. They are a billing department for the physicians (some or all I don't know) that work with the BANNER GOOD SAMARITAN hospital and Emergency Room/Urgent Care.

I jusr received a bill and was able to cross reference my account with the reference numer they had left on my Voice Mail.
The business name is EMERGENCY PROFESSIONAL SERVICES PC located in Scottsdale and with phone number 480-374-7352.
They also have a website to pay online www.payyourdoctor.com/eps.

I wish they left more details in their voice mail because it really does sound like a scam or something like that. You just can't be safe enough these days.

Thanks! This helped me...I got the same kind of call.

yea i just received a call today same thing just number and ref # nothin else sounded too ackward

THIS NUMBER KEEPS CALLING ME ALL HOURS OF THE DAY AND NIGHT, THEY WAS TOLD THAT I AM ON THE DO NOT CALL LIST BUT THEY KEEP CALLING ANY WAY

I got the same number calling me, I have never been to this type of facility, so don't be too cautious!  I work for an identity theft company and while they might be referencing the information, they could have hacked and gotten it.  Only deal with the company you went to for medical care and no outservices!!!