I had been working with my insurance carrier Cigna to get a portable oxygen concentrator prescribed by my doctor it was a more than two year journey dealing with carecentrix ( the only in network option for medical devices ) they ( carecentrix ) finally connected me with Lincare who promised the moon. they would initially hook me up with a stationary concentrator and a temporary portable unit while they ordered me a brand new unit 5 months passed and I heard nothing when I called Lincare to get an update they would call me back -- another month with no call back so I called again and now all of a sudden and out of nowhere they announced they are not contracted to supply portable units. So being extremely frustrated and disappointed again I cancelled the oxygen tanks in July 2015 yet they continued to bill for that service up until today a full year later. In January my insurance company agreed to reimburse me 100% for a portable unit that I could purchase anywhere 3 days from that date I had my brand new unit -- I cancelled all remaining services with Lincare and they came and picked up all equipment on 1/15/2016 yet they continue to commit insurance fraud month after month after month billing for services they no longer supplied -- so here we are more than 6 months with no services yet they have been paid by the insurance company for 6 months of insurance fraud all the folks are Lincare and Carecentrix that I have dealt with are by far the most dishonest and disorganized people I have every dealt with -- run from Lincare -- there are many legitimate options and carecentrix are totally not worth dealing qwith they exist so insurance companies do not have to pay because they are incapable of connecting you to anyone that actually can fulfill your needs