The company plans to expand to 300 locations by 2026, CVS Health Chief Financial Officer Shawn Guertin said on a call with investors when the deal was announced. If the transaction is finalized, Oak Street would be a wholly owned subsidiary of CVS Pharmacy. Healthcare transactions such as this one attract regulatory scrutiny, but recent major deals have survived antitrust reviews. For example, CVS Health completed its $8 billion deal to buy Dallas-based home health and physician enablement technology company Signify Health on Wednesday. Last week, the Justice Department and the attorneys general of Minnesota and New York backed off efforts to block UnitedHealth Group's $13 billion purchase of based technology company Change Healthcare. And last month, Amazon completed a $3.9 billion acquisition of New York- and San Francisco-based primary care provider One Medical.