Medicare Advantage insurer · Part of Orange County Health Authority · 2026

CalOptima Health OneCare

According to the Centers for Medicare & Medicaid Services (CMS) 2026 plan-year files, CalOptima Health OneCare markets 1 Medicare Advantage plans across 1 state; average CMS star rating 3.0★.

1
Plans offered
3.0★
Avg: Average
1
States covered
0
5-star plans

The short answer

CalOptima Health OneCare ranks #250 of 288 Medicare Advantage insurers by plan inventory (1 plans) but #194 by average CMS star (3.00★).

#250
inventory rank
1
plans offered
#194
avg star rank
3.00★
mean CMS rating

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

Lower average CMS star band

CalOptima Health OneCare in the narrower-inventory third

CalOptima Health OneCare ranks #194 of 212 rated insurers by mean CMS star (3.00★) - bottom-third quality band vs the rated corpus. CalOptima Health OneCare markets 1 Medicare Advantage plan across 1 state and 1 counties - a bottom-third inventory book (#250 of 288); county listings beat brand scale here. Inside the Orange County Health Authority 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, CalOptima Health OneCare ranks #250 of 288 Medicare Advantage insurers by plan count and #194 of 212 by average CMS star rating. Figures are CMS public-use data, informational only, not counseling.

PRE-BONUS · ONE-STATE · CONTRACT-THIN · HMO-BOOK · plans #250/288 · stars #194/212

States Covered

CA

Where CalOptima Health OneCare sits on CMS quality

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

3★ Top 78% higher than 22% 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%). This entry sits in this band. 3.25★–3.5★: 7 Medicare Advantage insurers (3%). Above this entry. 3.5★–3.75★: 50 Medicare Advantage insurers (24%). Above this entry. 3.75★–4★: 9 Medicare Advantage insurers (4%). Above this entry. 4★–4.25★: 44 Medicare Advantage insurers (21%). Above this entry. 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 CalOptima Health OneCare

Plan Name Type State Stars Action
ORANGE COUNTY HEALTH AUTHORITY HMO CA 3.0 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 CalOptima Health OneCare

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 PRE-BONUS · ONE-STATE · CONTRACT-THIN · HMO-BOOK.

CareSource MyCare Ohio (HMO D-SNP) · CONTRACT-THIN

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

ABS(plans_count) peer at 1 MA plans (Δ 0 wider vs CalOptima Health OneCare); BONUS-TIER · ONE-STATE vs this page's PRE-BONUS · ONE-STATE · CONTRACT-THIN.
Blue Plus · CONTRACT-THIN

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

ABS(plans_count) peer at 1 MA plans (Δ 0 wider vs CalOptima Health OneCare); PRE-BONUS · ONE-STATE vs this page's PRE-BONUS · ONE-STATE · CONTRACT-THIN.
Anthem Blue Cross (quality pole)

ABS(avg_star) pole at 3.0★ (Δ 0.0 vs CalOptima Health OneCare's PRE-BONUS): CONTRACT-WIDE · ONE-STATE.
Star ratings primer · PRE-BONUS

CalOptima Health OneCare's PRE-BONUS mean sits under the 4.0★ Quality Bonus Payment line; star measure domains matter before you weigh HMO-BOOK networks.
Data sourced from the Centers for Medicare & Medicaid Services (CMS). See our methodology for details. Retrieved and formatted by PlainMedicare

Using CalOptima Health OneCare's plan lineup

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

  • CalOptima Health OneCare ranks 194 of 212 insurers by average CMS star rating (3.0★ 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.