---
title: "JOAO MARCOS CASTRO FAGUNDES — Ownership Dossier"
canonical: https://whiteintel.dev/entity/16acd5c2-53dc-5f61-be94-e802a93f0d78
json: https://whiteintel.dev/api/public/dossier/16acd5c2-53dc-5f61-be94-e802a93f0d78
jurisdiction: BR
source: WhiteIntel corporate-ownership graph
---

# JOAO MARCOS CASTRO FAGUNDES

**Type:** Person  
**Jurisdiction:** [BR](https://whiteintel.dev/jurisdictions/br)  
**Canonical dossier:** https://whiteintel.dev/entity/16acd5c2-53dc-5f61-be94-e802a93f0d78  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/16acd5c2-53dc-5f61-be94-e802a93f0d78  

## Ownership & control

### Holdings / subsidiaries

- **NUCLEO DE CIRURGIA ONCOLOGICA DO SUDOESTE DA BAHIA - GRONCOBA LTDA** (owner) — https://whiteintel.dev/entity/8c8700ce-1713-5783-86dc-d82b67b6b174
- **BASTOS FERNANDES SERVICOS MEDICOS LTDA** (owner) — https://whiteintel.dev/entity/73fdda64-21b6-52a5-ad9d-4e8df530aea0
- **CG MED SERVICOS MEDICOS LTDA** (owner) — https://whiteintel.dev/entity/3e8714c0-ca43-5499-aebe-0445e9bc771b

## Provenance

- rfb_cnpj — https://casadosdados.com.br/solucao/cnpj/26500910

## Get the full, resolved dossier (agent-callable)

The above is the free teaser. The resolved **multi-hop UBO chain**, ownership **%**, full **financial history**, itemised **assets** and the hop-by-hop **exposure path** are the paid depth — callable as tools from your agent:

```bash
npx -y @whiteintel/mcp-server   # then: get_dossier · trace_ownership_path · check_offshore_exposure
```

Or unlock a one-off cited dossier for **JOAO MARCOS CASTRO FAGUNDES** — https://whiteintel.dev/entity/16acd5c2-53dc-5f61-be94-e802a93f0d78 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **JOAO MARCOS CASTRO FAGUNDES**. Human view: https://whiteintel.dev/entity/16acd5c2-53dc-5f61-be94-e802a93f0d78 · Structured JSON: https://whiteintel.dev/api/public/dossier/16acd5c2-53dc-5f61-be94-e802a93f0d78._

_Risk levels are heuristic investigative leads, not legal determinations of beneficial ownership. Every claim carries a source; an absent edge means "not yet observed in current sources", not "does not exist"._