Also - Tufts Dental School has a low cost dental service. Many friends and colleagues have used them and been satisfied

Suffolk Dental - I could not recommend them strongly enough. Excellent office staff, dentist, hygienist. Kind, conservative thoughtful. Just wonderful. I have pretty big dental fear. Was in foster care as a kid and the requisite dental visits were nasty. Then, didn't have dental insurance until I was 35 and I didn't have great teeth.

I love Suffolk Dental. They are on Tremont St near Park St so outside of the area you propose but not by much.

https://www.suffolkdental.com/

In Brookline, I remember Guen near St Mary's stop also good.

Lawful and courteous shovelers do what some people here have suggested: clear a 4 foot wide path, pile snow on curb close to street. Don't block curb cuts. Shovel with people who use canes and wheelchairs in mind. 6 inches of snow I'd shovel perpendicular to the street - push snow to the curb pile it on the curb.