Medicare Supplement
Same Medigap letter, different price in Tulsa: how Oklahoma insurers actually differ
If two insurers in Tulsa both sell Medigap Plan G, the coverage is identical — that is the whole point of standardized plans. So why can the prices look so different? The answer is not the benefits. It is how each company decides to price the same letter, whether it raises rates over time, whether it offers a household discount, and whether it puts you through medical underwriting when you apply.
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Click to call 855-729-3240Key takeaways
- Every insurer's Plan G in Oklahoma covers the same things — differences are in price, pricing method, rate history and underwriting.
- Oklahoma insurers use three pricing methods (community, issue-age and attained-age), and the method affects how your premium changes as you get older.
- The Medicare.gov Medigap policy search by ZIP code and the Oklahoma Insurance Department's rate guide are the two best places to see who sells which letter in Tulsa.
- Outside your one-time Medigap Open Enrollment Period, insurers in Oklahoma can generally use medical underwriting to decide whether to sell you a policy.
Tulsa is in Tulsa County, and Oklahoma follows the federal Medigap rules that make Plans A, B, D, G, high-deductible G, K, L, M and N available to people newly eligible for Medicare today. (Plans C and F remain only for people who became eligible before January 1, 2020.) Here is how to line up the same letter across the insurers that sell here without getting distracted by marketing.
Start with the letter, not the logo
A Medigap plan letter is a federally standardized package of benefits. A Plan G from one company pays the same Part A and Part B cost-sharing gaps as a Plan G from any other company. A Plan N is a Plan N. A high-deductible G is a high-deductible G.
That means when you compare insurers in Tulsa, you are really comparing four things about the same coverage: price, how the price will change over time, discounts you may qualify for, and how hard it is to get approved. The name on the card does not change what the plan pays.
The three pricing methods Oklahoma insurers use
Insurers can price a Medigap policy in one of three ways, and it matters as much as the starting premium.
- Community-rated (no-age-rated). Everyone with that plan pays roughly the same premium, regardless of age. Premiums can still go up for inflation, but not because you had a birthday.
- Issue-age-rated. The premium is based on your age when you first bought the policy. Someone who buys at 65 keeps that "65-year-old" base rate; buying later locks in a higher base rate.
- Attained-age-rated. The premium starts lower at 65 and increases as you get older. This is the most common method and often looks cheapest on day one, but it will rise with age.
Two Plan Gs with similar starting premiums can look very different at age 78 depending on which of these methods the insurer uses.
Rate history matters more than one year's price
Even within the same pricing method, insurers raise rates differently. Some hold rates steady for years; others file larger increases. Because Medigap rates in Oklahoma must be filed with the state, you can look up an insurer's recent rate-increase history through the Oklahoma Insurance Department, which publishes a Medigap rate guide and shopper's guide.
When you compare the same letter across companies, ask about — or look up — the last three to five years of increases, not just today's number.
Household discounts and other price adjustments
Some Medigap insurers in Oklahoma offer a household discount when two adults in the same home are enrolled, or when a spouse is on any of that insurer's policies. The size varies by company, and not every insurer offers one. It's worth asking on every quote, because the same Plan G with a household discount at one insurer can look very different from the same Plan G without one somewhere else.
Other adjustments you may see include payment-method discounts (for example, automatic bank draft) and non-tobacco rates.
Underwriting: when insurers can say no
This is the part many Tulsa shoppers miss. During your Medigap Open Enrollment Period — the six months that start when you're 65 or older and enrolled in Part B — insurers must sell you any Medigap policy they offer at their best available rate, regardless of your health. That is a one-time federal right.
Outside that window, Oklahoma does not require guaranteed issue for most switches. Insurers can ask health questions, look at your prescriptions, and decline you or charge more. There are limited guaranteed-issue situations (for example, if your prior coverage ends through no fault of your own), so if you think one applies to you, confirm it with SHIP before you apply.
The practical point: the "cheaper" insurer down the street doesn't help if they won't take you. Underwriting is part of the comparison.
How to find every insurer selling Medigap in Tulsa
Because insurer participation changes, the most reliable list is the live one. Two free tools cover it:
- Medicare.gov Medigap policy search. Enter your Tulsa ZIP code and it returns the insurers licensed to sell each plan letter in your area, along with pricing method and contact information.
- Oklahoma Insurance Department Medigap rate guide. The state publishes a shopper's guide with participating insurers and sample rates. Call 1-800-763-2828 for the SHIP (Senior Health Insurance Counseling Program), which offers free, unbiased help.
The table on this page reflects the roster we have available; the Medicare.gov search is the authoritative, day-to-day list.
A simple way to compare, side by side
When you request quotes on the same letter — say Plan G or Plan N — ask each insurer for the same four pieces of information:
1. The pricing method (community, issue-age, or attained-age). 2. Recent rate-increase history in Oklahoma. 3. Any household, payment or non-tobacco discount you qualify for. 4. Whether underwriting applies to your situation, and what questions they ask.
Put those side by side and you're comparing apples to apples. The coverage is already identical.
By the numbers
Medicare Part B premium, 2006–2026
The standard monthly Part B premium has climbed from $88.50 in 2006 to $202.90 in 2026. Hover any point for that year’s premium.
Source: CMS. Standard premium shown; in some hold-harmless years many existing enrollees paid less. Confirm at Medicare.gov.
By the numbers
How people get Medicare in Tulsa County
(MA penetration in Tulsa County)
MA penetration from CMS enrollment data; Medigap share is an estimate. U.S. average is about 54% Medicare Advantage. These are area-level figures, not plan-specific.
Who sells Medigap here
Medigap insurers in Oklahoma
Insurers offering Medigap policies in Oklahoma, listed alphabetically. Prices vary by insurer for the same letter and are not shown here.
- AARP - UnitedHealthcare Insurance Company Plans A, B, C, F, G, K, L, N
- AARP - UnitedHealthcare Insurance Company of America Plans A, F, G, N
- Aetna Health Insurance Company Plans A, B, F, F-HD, G, N
- AFLAC Plans A, F, G, N
- American Benefit Life Insurance Company Plans A, F, G, N
- Bankers Fidelity Assurance Company Plans A, F, G
- Bankers Life (Underwritten by Washington National Insurance Company) Plans A, F, G, G-HD, N
- BlueCross BlueShield of Oklahoma Plans A, F, F-HD, G, G-HD, N
- Everence Association Inc. Plans A, F, G, L, N
- Farm Bureau Health Plans - Members Health Insurance Company Plans A, B, C, D, F, G, M, N
- GPM Health and Life Insurance Company Plans A, F, G, N
- Guarantee Trust Life Insurance Company Plans A, F, G, N
- HealthSpring National Health Insurance Company Plans A, F, G, G-HD, N
- Humana (Humana Benefit Plan of Illinois, Inc.) Plans A, F, G, G-HD, N
- Humana Achieve (CompBenefits Insurance Company) Plans A, F, G, G-HD, N
- Insurance Company of North America Plans A, F, G, G-HD, N
- LifeShield National Insurance Company Plans A, F, G, N
- Lumos Insurance Plans A, F, G, G-HD, N
- Mutual of Omaha (Mutual of Omaha Insurance Company) Plans A, F, G, G-HD, N
- New Era Life Insurance Company Plans A, C, F, F-HD, G, G-HD, M, N
- Old Surety Life Insurance Company Plans A, C, F, G
- Physicians Select Insurance Company Plans A, F, G, G-HD
- State Farm Mutual Automobile Insurance Company Plans A, C, D, F, G, N
- United American Insurance Company Plans A, B, C, D, F, F-HD, G, G-HD, K, L, N
- USAA Life Insurance Company Plans A, F, G, N
- Wisconsin Physicians Service Insurance Corporation Plans A, C, F, G, N
- WoodmenLife Plans A, F, G, G-HD, N
Source: Medicare.gov Medigap policy search. No insurer is ranked or recommended.
Medicare Supplement (Medigap)
The Medigap plans you can buy in Oklahoma
Medigap plans are standardized by federal law: a Plan G from one insurer covers the same things as a Plan G from any other. Insurers set their own prices, which are not shown here.
| Plan | What it covers | Open to new enrollees |
|---|---|---|
| Plan A | The basic benefits every Medigap plan includes: Part A hospital coinsurance and up to 365 extra hospital days, Part B coinsurance, the first three pints of blood, Part A hospice coinsurance. | Yes |
| Plan B | Plan A plus the Part A hospital deductible. | Yes |
| Plan C | Plan B plus skilled-nursing coinsurance, the Part B deductible and foreign-travel emergency care. Closed to people newly eligible for Medicare on or after January 1, 2020. | Only if you were eligible before 2020 |
| Plan D | Plan B plus skilled-nursing coinsurance and foreign-travel emergency care (not the Part B deductible). | Yes |
| Plan F | Every standardized benefit, including the Part B deductible and Part B excess charges. Closed to people newly eligible on or after January 1, 2020. A high-deductible version exists. | Only if you were eligible before 2020 |
| Plan G | Every standardized benefit except the Part B deductible (which you pay yourself each year). A high-deductible version (G-HD) pays after you meet a yearly deductible. | Yes |
| Plan K | Pays a share of most cost-sharing (50 percent for several benefits) with a yearly out-of-pocket limit set by federal rules. | Yes |
| Plan L | Like Plan K with a larger share (75 percent) and a lower yearly out-of-pocket limit. | Yes |
| Plan M | Like Plan D but covers half of the Part A hospital deductible. | Yes |
| Plan N | Like Plan G, except a small copayment for some office and emergency-room visits, and it does not cover Part B excess charges. | Yes |
Source: CMS, Medicare Supplement Insurance (Medigap) rules; medicare.gov.
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When can you enroll? An interactive year
Enrollment windows are federal and the same nationwide. Confirm your personal dates at Medicare.gov or 1-800-MEDICARE.
Good to know
Frequently asked questions
Is a Plan G from one insurer better than a Plan G from another?
Can a Medigap insurer in Oklahoma turn me down?
Where can I see the full list of Medigap insurers selling in Tulsa?
Does the Medigap enrollment window follow the October–December Annual Enrollment Period?
- Medicare.gov Medigap policy search and state insurance-department rate guides
- CMS — Medicare Supplement Insurance (Medigap) rules (medicare.gov)
For personalized answers, contact Medicare.gov, 1-800-MEDICARE, or your local SHIP.
Also for Tulsa
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This page was last updated: September 2026.