CVS' potential acquisitions of two healthcare service providers Signify and Oak Street Health, along with other such deals, have been facing increasing scrutiny over their impact on cost of healthcare in the United States.

Earlier this month, U.S. Senator Elizabeth Warren urged the U.S. Federal Trade Commission to review healthcare conglomerate CVS' $9.5-billion acquisition of Oak Street as well as other merger deals in the sector.

(Reporting by Leroy Leo in Bengaluru; Editing by Shinjini Ganguli)