Jack, definitely switch to another Pulmonary Dr. I have had several pulmonary doctors over the last 25 years. Some of them had no bedside manners. I mean cold blooded, and think they know everything. Maybe your Primary Doctor can refer you to a good one. Make sure he’s in your network. Otherwise it can be very costly. I’m a veteran with a disability not COPD, but after many years I was able to get that rating so all my health care is free. If you’re a veteran you can sign up with the VA and you have to pay a copayment but some of the inhalers etc. are cheaper. If not hopefully you have a good insurance plan.
Good Luck.

Have you had a diagnosis from the hospital

I have had a decent PCP who treated my lungs. Then the hospital bought out this heartland. The hospital got switched.
I went back to my previous hospital and picked a excellent lung doctor who listens very carefully and likes to consider all the options. All I can say is there is the good and the other. I think that by keeping informed with the information that is available we can decide which doctor is the best for us.

You can always ask for a second opinion.....or third! You want to know what's going on and hopefully you can get two out of three to agree!