Medicare Advantage insurer · Part of Health Care Service Corporation · 2026

Blue Cross and Blue Shield of Oklahoma

According to the Centers for Medicare & Medicaid Services (CMS) 2026 plan-year files, Blue Cross and Blue Shield of Oklahoma markets 1 Medicare Advantage plans across 1 state; average CMS star rating 4.0★.

1
Plans offered
4.0★
Avg: Above average
1
States covered
0
5-star plans

The short answer

Blue Cross and Blue Shield of Oklahoma ranks #247 of 288 Medicare Advantage insurers by plan inventory (1 plans) but #94 by average CMS star (4.00★).

#247
inventory rank
1
plans offered
#94
avg star rank
4.00★
mean CMS rating

CMS assigns star ratings at the contract level; inventory breadth and average quality move on different axes.

Narrower MA inventory book

Blue Cross and Blue Shield of Oklahoma in the narrower-inventory third

Blue Cross and Blue Shield of Oklahoma ranks #247 of 288 by plan count (1 MA plans) - bottom-third inventory; county availability matters more than brand scale. Blue Cross and Blue Shield of Oklahoma markets 1 Medicare Advantage plan across 1 state and 28 counties - a bottom-third inventory book (#247 of 288); county listings beat brand scale here. Inside the Health Care Service Corporation family. Product mix HMO; 0 plans at 5 stars. Enrollment is not disclosed in the public file for this plan year. According to PlainMedicare's CMS plan-year corpus ranking, Blue Cross and Blue Shield of Oklahoma ranks #247 of 288 Medicare Advantage insurers by plan count and #94 of 212 by average CMS star rating. Figures are CMS public-use data, informational only, not counseling.

BONUS-TIER · ONE-STATE · CONTRACT-THIN · HMO-BOOK · plans #247/288 · stars #94/212

States Covered

OK

Where Blue Cross and Blue Shield of Oklahoma sits on CMS quality

Average CMS star rating across the insurer's own Medicare Advantage plans, against every rated insurer in the CMS file

4★ Top 30% higher than 70% of 212 Medicare Advantage insurers

2.25★–2.5★: 1 Medicare Advantage insurers (0%). Below this entry. 2.5★–2.75★: 7 Medicare Advantage insurers (3%). Below this entry. 2.75★–3★: 3 Medicare Advantage insurers (1%). Below this entry. 3★–3.25★: 37 Medicare Advantage insurers (17%). Below this entry. 3.25★–3.5★: 7 Medicare Advantage insurers (3%). Below this entry. 3.5★–3.75★: 50 Medicare Advantage insurers (24%). Below this entry. 3.75★–4★: 9 Medicare Advantage insurers (4%). Below this entry. 4★–4.25★: 44 Medicare Advantage insurers (21%). This entry sits in this band. 4.25★–4.5★: 8 Medicare Advantage insurers (4%). Above this entry. 4.5★–4.75★: 36 Medicare Advantage insurers (17%). Above this entry. 4.75★–5★: 1 Medicare Advantage insurers (0%). Above this entry. 5★–5.25★: 9 Medicare Advantage insurers (4%). Above this entry. This insurer 2.25★ 5.25★ every rated insurer, bucketed by value

Each bar is a band; taller bars hold more Medicare Advantage insurers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Advantage Star Ratings 2026 · 2026-09-01

Plans Offered by Blue Cross and Blue Shield of Oklahoma

Plan Name Type State Stars Action
GHS HEALTH MAINTENANCE ORGANIZATION, INC. HMO OK 4.0 View details →
Note: PlainMedicare provides CMS data for informational purposes only. This is not medical or insurance advice. Contact the insurer directly or visit Medicare.gov to confirm plan availability and current benefits in your county.

Read our methodology - how this data is sourced, computed, and verified.

Read with Blue Cross and Blue Shield of Oklahoma

ABS(plans_count) peers first, then an ABS(avg_star) quality pole and a stamp-branched guide, not a fixed Related strip. This page stamps BONUS-TIER · ONE-STATE · CONTRACT-THIN · HMO-BOOK.

Aetna Better Health of New Jersey · CONTRACT-THIN

ABS(plans_count) peer at 1 MA plans (Δ 0 wider vs Blue Cross and Blue Shield of Oklahoma); PRE-BONUS · ONE-STATE vs this page's BONUS-TIER · ONE-STATE · CONTRACT-THIN.
Aetna Better Health of Virginia · CONTRACT-THIN

ABS(plans_count) peer at 1 MA plans (Δ 0 wider vs Blue Cross and Blue Shield of Oklahoma); PRE-BONUS · ONE-STATE vs this page's BONUS-TIER · ONE-STATE · CONTRACT-THIN.
Aetna Medicare FIDE · CONTRACT-THIN

ABS(plans_count) peer at 1 MA plans (Δ 0 wider vs Blue Cross and Blue Shield of Oklahoma); UNRATED · ONE-STATE vs this page's BONUS-TIER · ONE-STATE · CONTRACT-THIN.
Aetna Medicare HIDE · CONTRACT-THIN

ABS(plans_count) peer at 1 MA plans (Δ 0 wider vs Blue Cross and Blue Shield of Oklahoma); UNRATED · ONE-STATE vs this page's BONUS-TIER · ONE-STATE · CONTRACT-THIN.
Quartz Medicare Advantage (HMO) (quality pole)

ABS(avg_star) pole at 4.0★ (Δ 0.0 vs Blue Cross and Blue Shield of Oklahoma's BONUS-TIER): CONTRACT-WIDE · REGIONAL.
Plan pick checklist · BONUS-TIER

Blue Cross and Blue Shield of Oklahoma stamps BONUS-TIER · CONTRACT-THIN; bonus-tier contracts still vary by county formulary and provider lock-in.
Data sourced from the Centers for Medicare & Medicaid Services (CMS). See our methodology for details. Retrieved and formatted by PlainMedicare

Using Blue Cross and Blue Shield of Oklahoma's plan lineup

Star rating and plan availability, not the insurer's size alone.

  • Blue Cross and Blue Shield of Oklahoma ranks 94 of 212 insurers by average CMS star rating (4.0★ average) - compare against the plans available in your own county. How star ratings work
  • Weigh total cost, not just premium: compare plan details using Medicare.gov before you enroll. Medicare Plan Compare
  • Check that your doctors and drugs are in-network before you enroll, and confirm the plan on Medicare.gov. Choosing a plan

Insurer-level averages combine every plan the organization files with CMS; the plan sold in your county may differ.

PlainMedicare is rendered directly from CMS Medicare Advantage and Part D public files, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a correction. Data current as of 2026-09-01.