Legal entity

Health Care Service Corporation

le:000089·legal entity·top of its tree

Holds directly

Through subsidiaries

Subsidiaries

Held directly, ever

Medicare contracts

Marketplace issuers

Identifiers

Namespace	Value	Valid
`cms_org_name`	HEALTH CARE SERVICE CORPORATION	2013-01-01 to today
`cms_org_name`	Health Care Service Corporation	2006-08-01 to today
`ein`	361236610	2013-01-01 to today
`naic`	70670	2013-01-01 to today

Owns or controls (20)

Company	Relation	When	Grade
AHS-TULSA OKLAHOMA HEALTH PLAN, INC.	controlled by	start 2014-02-01, no end found (last seen 2014-08-31)	B
AHS-TULSA OKLAHOMA HEALTH PLAN, INC.	controlled by	start 2013-12-01, still true	A
BLUE CROSS AND BLUE SHIELD OF OKLAHOMA	controlled by	start 2005-11-01, no end found (last seen 2007-10-31)	B
BLUE CROSS AND BLUE SHIELD OF OKLAHOMA	controlled by	start 2005-11-01, still true	B
BRAVO HEALTH MID-ATLANTIC, INC.	controlled by	start 2025-03-19, still true	A
BRAVO HEALTH PENNSYLVANIA, INC.	controlled by	start 2025-03-19, still true	A
Blue Cross and Blue Shield of Montana	controlled by	start 2013-08-01, still true	B
CIGNA HEALTHCARE OF COLORADO, INC.	controlled by	start 2025-03-19, no end found (last seen 2026-02-28)	A
GHS HEALTH MAINTENANCE ORGANIZATION, INC.	controlled by	at least since 2014-01-01, still true	B
GHS INSURANCE COMPANY	controlled by	at least since 2015-01-01, still true	B
GHS MANAGED HEALTH CARE PLANS, INC.	controlled by	at least since 2014-09-01, no end found (last seen 2017-12-31)	B
GROUP HEALTH SERVICES OF OKLAHOMA, INC.	controlled by	at least since 2006-08-01, no end found (last seen 2007-09-30)	B
HCSC INSURANCE SERVICES COMPANY	controlled by	at least since 2006-08-01, still true	B
HEALTHSPRING HEALTHCARE OF COLORADO, INC.	controlled by	at least since 2026-03-01, still true	B
HEALTHSPRING LIFE & HEALTH INSURANCE COMPANY, INC.	controlled by	start 2025-03-19, still true	A
HEALTHSPRING OF FLORIDA, INC.	controlled by	start 2025-03-19, still true	A
ILLINOIS BLUE CROSS BLUE SHIELD INSURANCE COMPANY	controlled by	at least since 2021-01-01, still true	B
MEDCO CONTAINMENT LIFE & MEDCO CONTAINMENT NY & HEALTH CARE SERVICE CORPORATION	controlled by	at least since 2026-06-01, still true	B
MEDCO CONTAINMENT LIFE AND MEDCO CONTAINMENT NY	controlled by	start 2025-03-19, still true	A
The Cigna Group Medicare Advantage, Cigna Supplemental Benefits, Medicare Part D and CareAllies businesses	controlled by	start 2025-03-19, still true	B

Holds (9)

Instrument	Kind	Since	Grade
H0107 contract:H0107	Medicare contract	start 2014-01-01	A
H3251 contract:H3251	Medicare contract	start 2014-06-01	A
H3822 contract:H3822	Medicare contract	start 2013-01-01	A
H8634 contract:H8634	Medicare contract	start 2014-01-01	A
Health Care Service Corporation, a Mutual Legal Reserve Company hios:30751	Marketplace issuer	start 2013-01-01	A
Health Care Service Corporation, a Mutual Legal Reserve Company hios:33602	Marketplace issuer	start 2013-01-01	A
Health Care Service Corporation, a Mutual Legal Reserve Company hios:36096	Marketplace issuer	start 2013-01-01	A
Health Care Service Corporation, a Mutual Legal Reserve Company hios:75605	Marketplace issuer	start 2013-01-01	A
Health Care Service Corporation, a Mutual Legal Reserve Company hios:87571	Marketplace issuer	start 2013-01-01	A

Ask about it

resolve_entity(text="Health Care Service Corporation")
describe_entity(entity_id="le:000089", on="2026-10-01")          # owners on a date, holdings, events
describe_entity(entity_id="le:000089", scope="group")            # everything under its top parent

Datasets that carry this company's name as a string (enrollment by parent, Stars by contract, MLR filings) join through these IDs; how_to_join names the key.

This page as markdown: /docs-md/companies/le_000089.md · every page in one file: /llms-full.txt