Medicare Advantage insurer · Part of University of Wisconsin Hospitals and Clincs Autho · 2026

Quartz Medicare Advantage (HMO)

According to the Centers for Medicare & Medicaid Services (CMS) 2026 plan-year files, Quartz Medicare Advantage (HMO) markets 19 Medicare Advantage plans across 3 states; average CMS star rating 4.0★.

19
Plans offered
4.0★
Avg: Above average
3
States covered
0
5-star plans

The short answer

Quartz Medicare Advantage (HMO) ranks #26 of 288 Medicare Advantage insurers by plan inventory (19 plans) but #65 by average CMS star (4.00★).

#26
inventory rank
19
plans offered
#65
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.

Wider MA inventory book

Quartz Medicare Advantage (HMO) in the wider-inventory third

Quartz Medicare Advantage (HMO) ranks #26 of 288 insurers by plan count (19 MA plans) - top-third inventory breadth in the CMS file. Quartz Medicare Advantage (HMO) markets 19 Medicare Advantage plans across 3 states and 14 counties - a top-third inventory book (#26 of 288 by plan count). Inside the University of Wisconsin Hospitals and Clincs Autho 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, Quartz Medicare Advantage (HMO) ranks #26 of 288 Medicare Advantage insurers by plan count and #65 of 212 by average CMS star rating. Figures are CMS public-use data, informational only, not counseling.

BONUS-TIER · REGIONAL · CONTRACT-WIDE · HMO-BOOK · plans #26/288 · stars #65/212

States Covered

IA WI MN

Where Quartz Medicare Advantage (HMO) 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 Quartz Medicare Advantage (HMO)

Plan Name Type State Stars Action
QUARTZ HEALTH PLAN MN CORPORATION HMO MN 4.0 View details →
QUARTZ HEALTH PLAN MN CORPORATION HMO MN 4.0 View details →
QUARTZ HEALTH PLAN MN CORPORATION HMO MN 4.0 View details →
QUARTZ HEALTH PLAN MN CORPORATION HMO MN 4.0 View details →
QUARTZ HEALTH PLAN MN CORPORATION HMO MN 4.0 View details →
QUARTZ HEALTH PLAN CORPORATION HMO WI 4.0 View details →
QUARTZ HEALTH PLAN CORPORATION HMO WI 4.0 View details →
QUARTZ HEALTH PLAN CORPORATION HMO WI 4.0 View details →
QUARTZ HEALTH PLAN CORPORATION HMO WI 4.0 View details →
QUARTZ HEALTH PLAN CORPORATION HMO WI 4.0 View details →
QUARTZ HEALTH PLAN CORPORATION HMO WI 4.0 View details →
QUARTZ HEALTH PLAN CORPORATION HMO WI 4.0 View details →
QUARTZ HEALTH PLAN CORPORATION HMO WI 4.0 View details →
QUARTZ HEALTH PLAN CORPORATION HMO WI 4.0 View details →
QUARTZ HEALTH PLAN CORPORATION HMO WI 4.0 View details →
QUARTZ HEALTH PLAN CORPORATION HMO WI 4.0 View details →
QUARTZ HEALTH PLAN CORPORATION HMO WI 4.0 View details →
QUARTZ HEALTH PLAN CORPORATION HMO WI 4.0 View details →
QUARTZ HEALTH PLAN CORPORATION HMO WI 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.

Nationwide insurers with similar Medicare Advantage scale or CMS quality

Data-derived peers across the CMS organization file: nearest MA plan inventory and nearest average CMS star rating. Not parent-org containment or same-state footprint overlap.

Similar plan inventory

Similar average CMS star rating

Read with Quartz Medicare Advantage (HMO)

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 · REGIONAL · CONTRACT-WIDE · HMO-BOOK.

Tufts Health Plan · CONTRACT-WIDE

ABS(plans_count) peer at 19 MA plans (Δ 0 wider vs Quartz Medicare Advantage (HMO)); PRE-BONUS · ONE-STATE vs this page's BONUS-TIER · REGIONAL · CONTRACT-WIDE.
Wellcare By Health Net · CONTRACT-WIDE

ABS(plans_count) peer at 20 MA plans (Δ 1 wider vs Quartz Medicare Advantage (HMO)); PRE-BONUS · REGIONAL vs this page's BONUS-TIER · REGIONAL · CONTRACT-WIDE.
Provider Partners Health Plans · CONTRACT-WIDE

ABS(plans_count) peer at 18 MA plans (Δ 1 tighter vs Quartz Medicare Advantage (HMO)); TOP-TIER · MULTI-STATE vs this page's BONUS-TIER · REGIONAL · CONTRACT-WIDE.
Excellus Health Plan, Inc · CONTRACT-WIDE

ABS(plans_count) peer at 20 MA plans (Δ 1 wider vs Quartz Medicare Advantage (HMO)); PRE-BONUS · ONE-STATE vs this page's BONUS-TIER · REGIONAL · CONTRACT-WIDE.
AHF (quality pole)

ABS(avg_star) pole at 4.0★ (Δ 0.0 vs Quartz Medicare Advantage (HMO)'s BONUS-TIER): CONTRACT-THIN · ONE-STATE.
Plan pick checklist · BONUS-TIER

Quartz Medicare Advantage (HMO) stamps BONUS-TIER · CONTRACT-WIDE; 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 Quartz Medicare Advantage (HMO)'s plan lineup

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

  • Quartz Medicare Advantage (HMO) ranks 65 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.