Oct 14 (Reuters) - Walgreens Boots Alliance Inc will invest an additional $5.2 billion in care provider VillageMD as the pharmacy chain aims to expand primary healthcare services at its stores, the two companies said on Thursday. The investment increases Walgreens’ stake in VillageMD to 63% from 30%, while the latter plans to go public in 2022. Walgreens had acquired its initial here 30% stake in VillageMD in July last year when it partnered with the privately held company to open doctor clinics attached to its drugstores across the United States. (Reporting by Leroy Leo in Bengaluru; Editing by Vinay Dwivedi) Our Standards: The Thomson Reuters Trust Principles.