"Astoundingly" is vague.
According to the Bureau of Labor Statistics, the mean salary of "family and general practitioners" in May 2020 was $214,370 [1]. This figure includes salaries from GPs throughout the country (i.e., not just in the Bay Area).
You can also look at median salaries. According to the BLS, all ten of the occupations with the highest median incomes in the U.S. are medical occupations [2]. "Family medicine physicians" are 10th on this list.
[1] https://www.bls.gov/ooh/healthcare/physicians-and-surgeons.h...