# Who are McKesson Corporation's customers? Who does McKesson Corporation earn revenue from?
Canonical: https://valuechain.wiki/mckesson · Facet: customers · Updated: 2026-09-23T09:58:33.590806+00:00 · Source: ValueChain.wiki (cited money-flow graph)

**Citable summary**: McKesson Corporation's confirmed revenue counterparties include CVS Health, Walmart Inc. Per the valuechain.wiki graph: 2 revenue edges, backed by 4 dated sources, 1 of them primary filings (as of 2026-09-23).

### CVS 헬스 (high)  → /cvs-health.md
- metric: Revenue share 24 percent · FY2026 · CVS Health share of McKesson FY2026 consolidated revenue
- note: CVS Health is McKesson's largest customer. CVS represented about 24% of consolidated fiscal 2026 revenue, and the pharmaceutical distribution partnership runs through June 2027.
- [confirms] SEC EDGAR (EN, filing, published 2026-05-08) https://www.sec.gov/Archives/edgar/data/927653/000092765326000069/mck-20260331.htm: "Sales to our largest customer, CVS Health Corporation, accounted for approximately 24% of our total consolidated revenues in fiscal 2026."
- [confirms] Drug Channels Institute (EN, research, published 2025-10-01) https://drugchannelsinstitute.com/files/2025-26-PharmaWholesalers-Overview.pdf: "McKesson, Revenues from CVS Health, 2011 to 2025."

### Walmart Inc (mid)  → /walmart.md
- note: Walmart is both a distribution customer served by McKesson for more than 30 years and its generic-drug sourcing partner. No counterparty-specific revenue amount or share was disclosed.
- [confirms] McKesson Corporation (EN, ir, published 2025-09-23) https://s24.q4cdn.com/128197368/files/doc_presentations/2025/09/250923-McKesson-Investor-Day-Transcript.pdf: "We've been providing distribution services to Walmart for more than 30 years."
- [confirms] NewsPim (KO, news, published 2025-04-07) https://www.newspim.com/news/view/20250407000962: "McKesson generates revenue by delivering pharmaceuticals to large chains such as Walmart."

Reverse side: https://valuechain.wiki/mckesson/suppliers.md · Ripple: https://valuechain.wiki/mckesson/ripple.md

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Full node: https://valuechain.wiki/mckesson.md · JSON: https://valuechain.wiki/mckesson.json