---
title: "HARTLEY THOMAS Y — Ownership Dossier"
canonical: https://whiteintel.dev/entity/8068a08a-1a7e-5e75-a9be-7a69ea41cdf2
json: https://whiteintel.dev/api/public/dossier/8068a08a-1a7e-5e75-a9be-7a69ea41cdf2
identifier: sec:0001012740
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# HARTLEY THOMAS Y

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001012740`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/8068a08a-1a7e-5e75-a9be-7a69ea41cdf2  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/8068a08a-1a7e-5e75-a9be-7a69ea41cdf2  

## Ownership & control

### Holdings / subsidiaries

- **SOUTHWEST GAS CORP** (director) — https://whiteintel.dev/entity/fe42bdd0-4fc9-547f-95ad-37fb67ef24a7
- **MEDICOR LTD** (director) — https://whiteintel.dev/entity/ffcc9d63-48c3-57e2-a5d3-2f6ff60898c9
- **SIERRA HEALTH SERVICES INC** (director) — https://whiteintel.dev/entity/091dcf05-2f73-5728-9ce2-0fb7d6ffc430

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **HARTLEY THOMAS Y**. Human view: https://whiteintel.dev/entity/8068a08a-1a7e-5e75-a9be-7a69ea41cdf2 · Structured JSON: https://whiteintel.dev/api/public/dossier/8068a08a-1a7e-5e75-a9be-7a69ea41cdf2._

_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"._