I honestly disagree with the brigham and womens recommendation. My pcp of many years is B&W affiliated, and anytime i have had to see a specialist, it takes months, whether i am seen in Boston or their Foxboro location. Currently waiting for a rheumatology appointment in February— i booked it two months ago.

I would switch providers, except as OP detailed, finding new ones in this region is incredibly difficult. My delayed care is better than no care, which is what i have sadly come to accept.