★★★★★ 5.0 · 142 Google reviews · Licensed agent since 1999 800-320-6269
Free help from a real licensed California agent. No pressure. No cost. Same rate as going direct.
Book a time to talk
California Medicare Supplement Options - Insider's Guide to Medigap plans

Key Tips to Picking the right Medicare Supplement Plan

Top 10 Medicare Supplement Companies in California for 2026 - Watch on YouTube


Medicare is usually a brand new world after decades of private health insurance.

New terms. News names. A whole new language (Part A, Part B, etc)!

You can run your quote anywhere and needless to say, you're getting so much mail on it that a few trees have suffered as a result.

The problem is that most of that "paid" mailing is focusing on one plan or another...not necessarily what's right for YOU.


SO...let's boil down the key points to understand so you can make an informed decision.

As independent California medicare supplement agents, there's no cost for our assistance and we work with all the major carriers!

More importantly, we seem to really help people...

Here are they points we'll cover and feel free to reach out with any questions at 800-320-6269 or at help@calhealth.net

  • A quick lay of the Medicare plan landscape
  • The supplement versus advantage plan decision
  • The most popular plan on the market
  • Don't forget Excess
  • Part D for medications
  • Pricing shenanigans and stability


Let's get started. This is meant to be a quick summary...definitely contact us with a personalized walk through the options above.

We covered the How and When to enroll questions as well as the very important Trade-off between Advantage Plans and Supplements.

A quick lay of the Medicare plan landscape

Medicare basically works like an 80/20 plan with deductibles.


They're paying 80% of the allowed charges and you're picking up 20% after two different deductibles are met.

  • Part A is for hospital or facility care and it has a larger deductible that goes up a bit each year
  • Part B is for doctor costs and it has a smaller deductible which goes up each year.


That's the nuts and bolts of it!

So far, so good?

The Medicare supplement plans fill in these big holes (plus some smaller ones) with different benefits.

There's a range of plans from A to N with different levels for the deductibles and coinsurance:

what does traditional medicare cover


The least expensive plan on the market is the A plan and the richest plan (to new enrollees0 is the G plan.


There may be high deductible versions of the G plan which are even cheaper.


We'll touch on Excess below since it's an important consideration among the plans.

Let's first dive into the big decision before looking at the plans.

The supplement versus Advantage plan decision

We have a whole section on Medicare supplements versus Advantage plans.

Advantage plans are usually HMO style plans designed to offer the core benefits of Medicare Plus address some of the gaps.

There's a big push for these since they can have zero or very low premium.

You'll get lots of mailers for these plans!

Nothing's free so what gives?

First, they are mainly HMO in design (some PPOs exist in the market) so you're limited to the doctors/hospitals you can use (smaller networks) and the carrier has more control over medical decisions.

That's just how HMO models work to keep costs down (their intended goal, after all)

The bigger issue that never seems to be in those mailers is the backend.

With medicare supplements..especially the G plan, you can expect very little out of pocket when you're sick or hurt.

With Advantage plans, there's generally a large out of pocket maximum.

This is an amount you have to pay before the plan goes 100% in a given calendar year.

It's usually under $1000 but can runa few thousand dollars per year depending on area.

Essentially, you're saving in monthly premium now with additional exposure if something happens healthwise.


Here's the issue with this trade-off...


At age 65, it's not exactly the best age to take that gamble!

On average, healthcare costs double with every decade of a person's life.

costs for healthcare by age


The market is more than happy to offer you a plan with shared backend in the thousands during a time you're more and more likely to have such events.


Let's say a G plan is $150/month at age 65. An Advantage plan is zero dollars monthly with copays and $3K max.

If you have bigger bills and hit the $3K, that's the equivalent of $250/month premium!

Almost double what the G plan is. See why it's so popular?

Now, there's a way to make this work in your interest as we explain but you want to aim for Out-of-pocket max's around $1000/year. Learn more at our Insider's Guide to Advantage plans.


The issue is that once you get past the open enrollment period, you may not be able to change from the Advantage plan to a supplement.


You're now making this same tradeoff at age 70? 75? See why it's so popular?


Again, check out our big review of Tradeoff between Advantage Plans and Supplements

For some people, Supplements monthly premium just isn't in the budget and we totally respect that. We want those people to get the most out of that option though.


So...back to supplements: What is the most popular supplement plan...by far.

The most popular supplement plan on the market

The G plan is the most popular supplement on the market. We have a full review on the G medigap plan.


It replaced the old F plan, which used to be the most popular option.

Essentially, the G plan fills all the holes of Medicare at 100% except for the Part B deductible which runs around $283/year.


This means you'll pay the doctor visits for the first few hundred (goes up a bit each year).


Otherwise, the G plan is the richest option on the market and since we're probably age 65 and up, that's the right bet as healthcare costs go up accordingly.

You can quote all the G plans (even high deductible versions) side by side here:

Free California Health Quote
Google ★★★★★ 5.0
⚡ Free & Instant

Compare plans from all major California carriers - pick your market to see plans & prices instantly. Same rate as going direct, with a licensed agent in your corner.

Serving California since 1994 · 600,000+ quotes · 5.0 Google rating


Let's turn to one important piece that really makes the G plan pop.

Don't forget Excess

There's a term that you may not recognize if you're new to Medicare.


Excess.

doctors can choose to charge up to 15% more than what Medicare allows.


This is becoming more common as Medicare is forced to squeeze costs with budgetary issues.


The problem is that the 15% is not capped.


We definitely want excess addressed and only the G plan covers it if you're new to Medicare.


Most people (and sales literature) totally skip over this because they don't understand the ramifications.


Medicare is projected to be insolvent unless changes are made. They will make changes and you can expect further tightening of reimbursement to providers.

Chart showing rising medical inflation costs over time in California


More doctors will take the 15% which is already the trend.

Again, there's no cap or limit to this 15% charge so we want it addressed.


That basically makes the G or G high deductible a key option.


What about medications?

Part D for medications

There's one more key piece...RX!


A whole separate plan addresses prescriptions (outpatient like what you at a pharmacy) and it's called Part D.


This is a plan purchased through a carrier and you quote it directly here:

Better yet, we can quote the plans according to your medication list and favorite pharmacies and there's ZERO cost for this assistance.

You'll see a quote of plans that cover your medications in your area and then sort based on best value - total out-of-pocket which is monthly premium + copays.

Check out our guide for Part D.

Map of California showing Medicare Part D prescription drug plan coverage areas and options across the state

Again, Medicare nor supplements (including G plan) cover medications. So....essentially 3 pieces:

  • Tradional Medicare - Your Part A and B with Medicare (Social Security)
  • G plan supplement
  • Part D for medication


Let's finally talk about pricing.

Pricing shenanigans and stability

This is actually very frustrating to us. People are already confused (hopefully less now!) in dealing with the newness of Medicare.

The plans are standardized so a G plan is a G plan in benefits and network regardless of the carrier.

What you're basically shopping then is pricing, pricing stability going forward, and ease of use.


Most of the carriers are pretty easy to work with since they're all tied in with Medicare.


It really comes down to pricing!

Here's the rub...some of the carriers will offer discounts up front for new enrolled (new Part B's...usually turning 65 or leaving employer health plans).

This makes them look very cheap up front and then they charge more for the next few decades!

When you run a quote, you're just seeing this one carrier that's 20% cheaper not realizing that you'll more than pay for it over the life of the policy.

Very similar to the Advantage plan's high Out-of-pocket-max trick above.

In terms of pricing and stability, we'll quote all the major carriers in your area so can really make a solid decision.


They may have small discounts for first year but their longterm trajectory is lower than other carriers.

The quote will show you full price (before discounts) so you can compare apples and apples but any applicable discounts will be available to you when you enroll.

Check with us for various ways to save!


Remember...it's not the first year that matters with Medicare since you'll have the coverage for years!


That being said, we can use the Birthday Rule in California to change to a similar or lesser plan (G to G, G to N, etc) with no health questions around our birthday!!

how to use the California medigap birthday rule to switch plans


You can run your quote above to see how it stacks out for you.

Enrollment is super easy with our online system!

  • Run your quote above
  • Enter your doctor/medication in the quote (for Part D and Supplements or Advantage plans)
  • Reach out with any and ALL questions

Of course, there's no cost for our assistance and we're happy to help with any questions!

get free help from a 5 Star Google Rated California health insurance


Related Guides:




Frequently Asked Questions
▸ What is the difference between Medicare Supplement and Medicare Advantage plans in California?
Medicare Supplement (Medigap) plans help cover costs that Original Medicare doesn't pay - like copays, coinsurance, and deductibles - and generally let you see any provider nationwide that accepts Medicare. Medicare Advantage plans typically use provider networks and often bundle extra benefits, but coverage rules differ significantly. The right choice depends on your health needs, budget, and preferred doctors.
▸ What is the most popular Medicare Supplement plan in California?
Plan G is generally the most popular Medigap plan for new Medicare enrollees in California, as it covers most out-of-pocket costs left by Original Medicare after you meet the Part B deductible. Because Medigap benefits are federally standardized, a Plan G from any carrier offers identical coverage - premiums and customer service are where carriers differ. You can compare California Medicare Supplement carriers to find the best fit.
▸ Can I switch Medicare Supplement plans in California without medical underwriting?
California's Birthday Rule gives residents a 60-day window around their birthday each year to switch to an equal or lesser-benefit Medigap plan without medical underwriting - a protection unique to California. Outside that window, carriers may require health questions and could deny coverage based on your medical history. Speaking with a licensed agent can help you plan the right timing.
▸ Does Medicare cover dental and vision in California?
Original Medicare generally does not cover routine dental or vision care, so most Medicare enrollees in California need to add separate dental and vision coverage. Some Medicare Advantage plans may include limited dental and vision benefits, but standalone supplemental plans are also available. Learn more about adding dental and vision coverage to your health plan.
▸ Do I need a separate Part D plan if I have a Medicare Supplement plan in California?
Yes - Medicare Supplement plans do not include prescription drug coverage, so most enrollees add a standalone Medicare Part D plan to cover medications. Part D plans vary by premium, formulary, and pharmacy network, so comparing options each year during Annual Enrollment (October 15 - December 7) is generally recommended. A licensed agent can help you find a Part D plan that matches your specific medications.
The answers above are general information about California health insurance and may change as rates, plans, and rules are updated each year. They are not a substitute for personalized advice. For current, personalized guidance, please contact us, email help@calhealth.net, or call 800-320-6269. Serving California since 1994.
Free California Health Quote
Google ★★★★★ 5.0
⚡ Free & Instant

Compare plans from all major California carriers - pick your market to see plans & prices instantly. Same rate as going direct, with a licensed agent in your corner.

Covered CAMedicareSmall BusinessNeed a real person? →
Serving California since 1994 · 600,000+ quotes · 5.0 Google rating