Small businesses can shop off-exchange through a broker, buy a small-group plan...

https://wool-wiki.win/index.php/Does_a_Chamber_of_Commerce_Offer_Health_Insurance_for_Members%3F

Small businesses can shop off-exchange through a broker, buy a small-group plan directly from a carrier, or compare association plans. Before comparing premiums, check whether employees’ doctors and preferred hospitals are in each plan’s network.