MCK vs ADP Comparison

McKesson Corp is one of three leading pharmaceutical wholesalers in the US engaged in sourcing and distributing branded, generic, and specialty pharmaceutical products to pharmacies (retail chains, independent, and mail order), hospitals networks, and healthcare providers. Along with Cencora and Cardinal Health, the three account for over 90% of the US pharmaceutical wholesale industry. Outside the US market, McKesson engages in pharmaceutical wholesale and distribution in Canada. Additionally, the company supplies medical-surgical products and equipment to healthcare facilities and provides a variety of technology solutions for pharmacies.

Automatic Data Processing is a global technology company providing cloud-based human capital management solutions, enabling clients to better implement payroll, talent, time, tax, and benefits administration. Additionally, ADP provides human resource outsourcing solutions that permit customers to offload some of their traditional HR tasks. The company operates through two segments: employer services and professional employer organization services. Employer services consist of the company's HCM products as well as a la carte HRO solutions. PEO services contain ADP's comprehensive HRO solution, where it acts as a co-employer with its customer. As of fiscal 2025, ADP serves over 1.1 million clients and pays over 42 million workers across 140 countries.