---
title: Atlas Commons research objects — Medicare plans in San Sebastian, Puerto Rico (CY2026)
license: CC0-1.0
source: CMS CY2026 Medicare Landscape Files
---

# Atlas Commons research objects — Medicare plans in San Sebastian, Puerto Rico (CY2026)

CMS CY2026 Medicare Advantage and Part D plans available in San Sebastian, Puerto Rico: plan count (AGGREGATED), premium range (RECORDED from CMS Landscape Files), CMS star ratings (DETERMINATION — CMS-issued institutional quality rating), and epistemic boundary (INTERPRETATION). Premiums are base plan premiums; actual cost depends on Part B premium, IRMAA, and LIS. Star ratings are CMS quality scores. This surface informs; it does not rank or advise. Use medicare.gov/plan-compare to enroll. CC0.

## Claims

### 41 Medicare plans are available in San Sebastian, Puerto Rico for contract year 2026

**DERIVED.** The CMS CY2026 Medicare Landscape Files record 41 Medicare Advantage and Part D plans available in San Sebastian, Puerto Rico. Atlas Commons counted the rows; CMS published the underlying plan×county records, not this county-level total.

Source: CMS CY2026 Medicare Landscape Files — https://www.cms.gov/medicare/health-drug-plans/medicare-advantage/plan-information/plan-information
Falsifier: occurred=TRUE: a faithful COUNT/SUM/total over the named record set that introduces NO modeling choice — it IS the case in the record. adjudged=FALSE: Atlas Commons computed the aggregate; CMS CY2026 Medicare Landscape Files published the underlying records, NOT this figure. Re-count it from the named source to verify. Distinct from a median/ratio/index (which picks a population, weighting, denominator, or threshold — a constructed statistic → 'derived', occurred=FALSE) and from an authority-published total (→ 'recorded', adjudged=TRUE).

### Monthly premiums for Medicare plans in San Sebastian, Puerto Rico range from $0.00/mo to $15.00/mo (CY2026)

**RECORDED.** The CMS CY2026 Medicare Landscape Files publish per-plan monthly consolidated premiums for San Sebastian, Puerto Rico. Across the 41 plans with a published premium, the range is $0.00/mo to $15.00/mo. These are the plan's base monthly premium — your actual cost depends on income-related adjustments (IRMAA), any applicable Low Income Subsidy (LIS/Extra Help), and your Part B premium. A $0 plan premium does not mean $0 total cost.

Source: CMS CY2026 Medicare Landscape Files — https://www.cms.gov/medicare/health-drug-plans/medicare-advantage/plan-information/plan-information
Falsifier: Verify in the CMS CY2026 Medicare Landscape Files for San Sebastian, Puerto Rico. Falsified if the CMS-published per-plan premium figures differ.

### CMS assigned star ratings to 41 of 41 Medicare plans in San Sebastian, Puerto Rico (CY2026); average overall: 4.9 stars

**PROJECTED.** CMS issued Overall star ratings (1–5 stars) to 41 of 41 Medicare plans in San Sebastian, Puerto Rico for CY2026. The unweighted average overall star rating across rated plans is 4.9; 31 plans received 5 stars. Star ratings are CMS quality scores — an institutional determination, not a measured event. A higher rating reflects better performance across CMS quality measures. Ratings cover the contract's overall performance, not this county specifically; a plan may be available in your county with a rating earned across its full service area.

Source: CMS CY2026 Medicare Landscape Files — https://www.cms.gov/medicare/health-drug-plans/medicare-advantage/plan-information/plan-information
Falsifier: Verify CMS star ratings for these contract IDs at the CMS Medicare Plan Finder or the CMS star ratings dataset. Falsified if the CMS-published ratings for these contracts differ. Note: PDP-only plans and newly contracted plans may not have an overall star rating — the 0 unrated plans in this county are not rated, not unqualified.

### What these Medicare plan figures are — and are NOT — for San Sebastian, Puerto Rico (the epistemic boundary)

**INTERPRETATION.** This page lists Medicare Advantage (MA) and Part D Prescription Drug Plan (PDP) plans available in San Sebastian, Puerto Rico for CY2026, with their CMS-published base premiums and CMS star ratings. The premiums shown are the PLAN's base monthly premium — your actual monthly cost depends on the Part B premium (deducted from Social Security for most enrollees), income-related premium adjustments (IRMAA), and any Low Income Subsidy (Extra Help). A star rating is CMS's quality score for the plan's overall performance — a higher rating is generally better, but the "best" plan depends on your specific prescriptions, preferred doctors, and budget. This surface informs and compares; it does NOT rank plans, recommend a "best" plan, or account for your individual situation. To compare plans with your specific drugs and providers and to enroll, use the official Medicare Plan Finder at medicare.gov/plan-compare. For free, unbiased help, contact your State Health Insurance Assistance Program (SHIP) or call 1-800-MEDICARE (1-800-633-4227).

Source: Coverage Atlas framing (over the CMS facts above) — https://coverage-atlas.ryanjhunter.workers.dev/coverage/medicare-plans/pr/san-sebastian
Falsifier: occurred=FALSE (a framing) and adjudged=FALSE (the atlas's reading, not a CMS verdict) — the LOWEST-warrant claim here.

---

Every claim above carries a four-status warrant (RECORDED / MODELED / DERIVED / INTERPRETATION) and a named source you can re-fetch — this is a research object, not a flat fact. Structured: `https://coverage-atlas.ryanjhunter.workers.dev/coverage/medicare-plans/pr/san-sebastian.jsonld`

## Data

### Medicare plans in San Sebastian, Puerto Rico (CY2026) — all RECORDED/DETERMINATION

Plan list from the CMS CY2026 Medicare Landscape Files. Premiums = RECORDED (CMS-published per-plan figures). Star ratings = DETERMINATION (CMS-issued institutional quality ratings). Plan count = AGGREGATED (Atlas Commons counted the rows; CMS published them).

| contract_plan_id | plan_name | category | plan_type | organization | monthly_premium_usd | overall_stars | moop_in_network_usd | snp |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| H4003_009 | MMM Supremo (HMO C-SNP) | SNP | HMO C-SNP | Medicare y Mucho Mas (MMM) | 0 | 5 | 3250 | No |
| H4003_017 | MMM Diamante Platino (HMO D-SNP) | SNP | HMO D-SNP | Medicare y Mucho Mas (MMM) | 0 | 5 | 3250 | No |
| H4003_019 | MMM Unico (HMO-POS) | MA-PD | HMO-POS | Medicare y Mucho Mas (MMM) | 15 | 5 | 3250 | No |
| H4003_034 | MMM Elite (HMO-POS) | MA-PD | HMO-POS | Medicare y Mucho Mas (MMM) | 0 | 5 | 3250 | No |
| H4003_055 | MMM Deluxe (HMO-POS) | MA-PD | HMO-POS | Medicare y Mucho Mas (MMM) | 0 | 5 | 3250 | No |
| H4003_058 | MMM Dorado Platino (HMO D-SNP) | SNP | HMO D-SNP | Medicare y Mucho Mas (MMM) | 0 | 5 | 3250 | No |
| H4004_048 | PMC Premier Platino (HMO D-SNP) | SNP | HMO D-SNP | Medicare y Mucho Mas (MMM) | 0 | 5 | 3250 | No |
| H4004_056 | PMC Max (HMO-POS) | MA-PD | HMO-POS | Medicare y Mucho Mas (MMM) | 0 | 5 | 3250 | No |
| H4004_065 | MMM Plenitud (HMO-POS) | MA-PD | HMO-POS | Medicare y Mucho Mas (MMM) | 0 | 5 | 3250 | No |
| H4004_066 | MMM Valioso (HMO-POS) | MA-PD | HMO-POS | Medicare y Mucho Mas (MMM) | 0 | 5 | 3250 | No |
| H4004_068 | MMM Combo Platino (HMO D-SNP) | SNP | HMO D-SNP | Medicare y Mucho Mas (MMM) | 0 | 5 | 3250 | No |
| H4004_069 | MMM Flexi Platino (HMO D-SNP) | SNP | HMO D-SNP | Medicare y Mucho Mas (MMM) | 0 | 5 | 3250 | No |
| H4004_070 | MMM Grandioso (HMO-POS) | MA-PD | HMO-POS | Medicare y Mucho Mas (MMM) | 0 | 5 | 3250 | No |
| H4004_071 | MMM Mega Flex (HMO-POS) | MA-PD | HMO-POS | Medicare y Mucho Mas (MMM) | 0 | 5 | 3250 | No |
| H4004_072 | MMM Relax Platino (HMO D-SNP) | SNP | HMO D-SNP | Medicare y Mucho Mas (MMM) | 0 | 5 | 3250 | No |
| H4004_073 | MMM Balance (HMO-POS) | MA-PD | HMO-POS | Medicare y Mucho Mas (MMM) | 0 | 5 | 3250 | No |
| H4005_004 | Óptimo Plus (PPO) | MA-PD | PPO | Triple-S Advantage | 0 | 3.5 | 6751 | No |
| H5577_002 | MCS Classicare Platino Ideal (HMO D-SNP) | SNP | HMO D-SNP | MCS Classicare | 0 | 5 | 3400 | No |
| H5577_005 | MCS Classicare Efectivo (HMO) | MA-PD | HMO | MCS Classicare | 0 | 5 | 3400 | No |
| H5577_008 | MCS Classicare Essential (HMO-POS) | MA-PD | HMO-POS | MCS Classicare | 0 | 5 | 3400 | No |
| H5577_016 | MCS Classicare Patriot (HMO) | MA | HMO | MCS Classicare | N/A | 5 | 3400 | No |
| H5577_017 | MCS Classicare Platino Progreso (HMO D-SNP) | SNP | HMO D-SNP | MCS Classicare | 0 | 5 | 3400 | No |
| H5577_038 | MCS Classicare Primero (HMO C-SNP) | SNP | HMO C-SNP | MCS Classicare | 0 | 5 | 3400 | No |
| H5577_042 | MCS Classicare Firme (HMO) | MA-PD | HMO | MCS Classicare | 0 | 5 | 3400 | No |
| H5577_043 | MCS Classicare En Tu Hogar (HMO) | MA-PD | HMO | MCS Classicare | 0 | 5 | 3400 | No |
| H5577_044 | MCS Classicare Hero (HMO) | MA-PD | HMO | MCS Classicare | 0 | 5 | 3400 | No |
| H5577_046 | MCS Classicare Platino Total (HMO D-SNP) | SNP | HMO D-SNP | MCS Classicare | 0 | 5 | 3400 | No |
| H5577_052 | MCS Classicare InteliCare (HMO) | MA-PD | HMO | MCS Classicare | 0 | 5 | 3400 | No |
| H5577_054 | MCS Classicare Platino Maximo (HMO D-SNP) | SNP | HMO D-SNP | MCS Classicare | 0 | 5 | 3400 | No |
| H5577_056 | MCS Classicare Excede (HMO) | MA-PD | HMO | MCS Classicare | 0 | 5 | 3400 | No |
| H5577_059 | MCS Classicare RxMax (HMO) | MA-PD | HMO | MCS Classicare | 0 | 5 | 3400 | No |
| H5577_062 | MCS Classicare Platino 185 (HMO D-SNP) | SNP | HMO D-SNP | MCS Classicare | 0 | 5 | 3400 | No |
| H5774_022 | Contigo Plus (HMO C-SNP) | SNP | HMO C-SNP | Triple S Advantage | 0 | 4.5 | 4200 | No |
| H5774_028 | Platino Blindao (HMO D-SNP) | SNP | HMO D-SNP | Triple S Advantage | 0 | 4.5 | 3650 | No |
| H5774_031 | Brillante (HMO-POS) | MA-PD | HMO-POS | Triple S Advantage | 0 | 4.5 | 4200 | No |
| H5774_035 | Platino Enlace (HMO D-SNP) | SNP | HMO D-SNP | Triple S Advantage | 0 | 4.5 | 3650 | No |
| H5774_038 | Enlace Plus (HMO) | MA-PD | HMO | Triple S Advantage | 0 | 4.5 | 4200 | No |
| H5774_041 | PLATINO ADVANCE (HMO D-SNP) | SNP | HMO D-SNP | Triple S Advantage | 0 | 4.5 | 3650 | No |
| H5774_043 | PLATINO PLUS (HMO D-SNP) | SNP | HMO D-SNP | Triple S Advantage | 0 | 4.5 | 3650 | No |
| H5774_046 | ContigoEnMente (HMO C-SNP) | SNP | HMO C-SNP | Triple S Advantage | 0 | 4.5 | 4200 | No |
| H5774_047 | Ahorro Plus (HMO) | MA-PD | HMO | Triple S Advantage | 0 | 4.5 | 4200 | No |