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GREAT NATION INSURANCE — PERSONAL GUIDANCE SINCE 2004

TRUSTED INSURANCE GUIDANCE.
PERSONAL SERVICE.

Great Nation Insurance is an independent agency known for personal service, strong customer reviews, and extensive Medicare knowledge. We take time to explain your options clearly so you can make confident insurance decisions.

  • Google Reviews and a strong reputation for customer service.
  • Experienced Medicare guidance for Medigap, Medicare Advantage, Part D and enrollment.
  • Independent agency access to multiple insurance carriers and coverage options.
  • Serving clients since 2004 with local, personal assistance.

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MEDICARE INSURANCE — OKLAHOMA, SURROUNDING STATES & OTHER STATES WHERE LICENSED

MEDICARE MADE SIMPLE.
WE MAKE IT PERSONAL.

Get clear answers, understand your options, and find the Medicare coverage that's right for you.

  • Independent guidance. Multiple options.
  • No cost. No obligation.
  • Local, licensed & trusted since 2004.

Get Your Free Medicare Consultation

Let's find the right options for you.

🔒 Your information is safe and secure.
LOCAL EXPERTSWe live here. We're here for you.
MULTIPLE PLAN OPTIONSCompare plans from multiple carriers.
PERSONALIZED SERVICEWe take time to understand your needs.
NO COST TO YOUOur help is free and confidential.
MULTI-STATE SERVICEMedicare & Life in Oklahoma, surrounding states & other states where licensed.
MEET GREAT NATION INSURANCE

Personal Service From a Team You Can Trust

Great Nation Insurance is committed to helping clients understand their insurance options and make confident decisions. Our team believes in personal service, clear explanations, and being available when our clients need help.

CONTACT OUR TEAM

WE REPRESENT MULTIPLE CARRIERS

Aetna • Humana • UnitedHealthcare • Wellcare • Cigna • Devoted • CommunityCare • Blue Cross Blue Shield • Mutual of Omaha • Physicians Mutual • GlobalHealth • ManhattanLife • Mercury Insurance • GEICO • Progressive • and many more

Great Nation Insurance agency staff
GOOGLE REVIEWS

What Great Nation Insurance Clients Are Saying

Our clients often mention knowledgeable guidance, clear explanations, personal service, and help making Medicare decisions easier. Here are a few of the reviews currently featured by Great Nation Insurance.

★★★★★ Google Review

Bryan Covalt

“Darren Chang was so pleasant to work with. He was very informative, personable yet very professional. He made what seemed to be an overwhelming task turn out to be quite doable.”

★★★★★ Google Review

Carla Hafner

“Darren Chang was very professional and helpful in getting me set up with my Medicare Supplement and following up with me to make sure I got my Medicare part A and B set up in a timely manner and then finished up with my part D. Could not have asked for a better agent.”

★★★★★ Google Review

Frank Macias

“Great Nation insurance is the best Mr Chang did an awesome job helping us with our insurance I recommend great Nation insurance to all my friends and family thanks again for being there for us ☺️”

★★★★★ Google Review

Angela Alred

“Darren is the BEST!, so professional,, he will answers all ur questions anytime of day and explain the plan so detail and easy to underhand , i will recommand him to all my friends and family members , i wish i had contacted him way back i would had saved money, time and frustration.. thank you so very much from the bottom of my heart .”

★★★★★ Google Review

Merry wong

“I saved over 1200.00 switching from Plan F to Plan G thanks to Darren Chang at Great Nation Insurance! The only difference in both plans was a deductible on Plan G which was under 200.00, and that was only paid once a year if I used my plan. I'm very happy with the savings!!”

★★★★★ Google Review

Collin B

“Great people and very knowledgeable They helped out my parents get their Medicare supplements and made the whole process very easy and smooth, highly recommended!”

Which Medicare Option Is Right for You?

Medicare has several different parts and coverage choices. Click Learn More for a plain-English explanation of each option.

MEDICARE ADVANTAGE
(PART C)

Private Medicare plans that provide your Medicare Part A and Part B benefits and may include additional benefits.

MEDICARE SUPPLEMENT
(MEDIGAP)

Helps pay certain out-of-pocket costs that Original Medicare does not fully cover.

PART D
DRUG PLANS

Prescription drug coverage that can help reduce what you pay for medications.

MEDICARE
ENROLLMENT

Guidance for people becoming eligible for Medicare or reviewing their current coverage.

2026 MEDICARE SUPPLEMENT (MEDIGAP)

Compare 2026 Medigap Plan Benefits

Medigap plans are standardized in most states. A checkmark means the plan covers 100% of that benefit; percentages show the portion the plan covers.

2026 Medigap benefitABCDF*G*KLMN
Part A coinsurance & hospital costs (up to 365 additional days)
Part B coinsurance or copayment50%75%✓***
Blood (first 3 pints)50%75%
Part A hospice care coinsurance or copayment50%75%
Skilled nursing facility care coinsurance50%75%
Part A deductible50%75%50%
Part B deductible
Part B excess charges
Foreign travel emergency (up to plan limits)80%80%80%80%80%80%
2026 out-of-pocket limitN/AN/AN/AN/AN/AN/A$8,000$4,000N/AN/A

* High-deductible Plans F and G: In states where offered, the 2026 deductible is $2,950 before the policy begins paying covered costs.

Plans C and F eligibility: These plans generally aren't available to people who were new to Medicare on or after January 1, 2020. People eligible for Medicare before that date may still be able to buy them.

** Plans K and L: After you meet the plan's annual out-of-pocket limit and the annual Part B deductible, the Medigap policy pays 100% of covered services for the rest of the calendar year.

*** Plan N: Pays 100% of Part B coinsurance except for copayments of up to $20 for some office visits and up to $50 for certain emergency-room visits that don't result in an inpatient admission.

Source: Medicare.gov / CMS, 2026 Medigap standardized plan benefits. Benefits shown are standardized in most states; Massachusetts, Minnesota, and Wisconsin standardize Medigap differently.

2026 MEDICARE COSTS

2026 Medicare IRMAA Charts

IRMAA (Income-Related Monthly Adjustment Amount) is an additional Medicare charge that may apply when your modified adjusted gross income is above certain levels. The 2026 amounts below are based on the official CMS 2026 Medicare premium figures.

2026 Part B IRMAA

The standard Medicare Part B premium is $202.90 per month in 2026. Higher-income beneficiaries may pay an additional IRMAA amount.

Individual MAGIJoint MAGIPart B IRMAATotal Part B Monthly Premium
$109,000 or less$218,000 or less$0.00$202.90
Over $109,000–$137,000Over $218,000–$274,000$81.20$284.10
Over $137,000–$171,000Over $274,000–$342,000$202.90$405.80
Over $171,000–$205,000Over $342,000–$410,000$324.60$527.50
Over $205,000–under $500,000Over $410,000–under $750,000$446.30$649.20
$500,000 or more$750,000 or more$487.00$689.90

2026 Part D IRMAA

Part D plan premiums vary by plan. If IRMAA applies, the amount below is paid in addition to the premium charged by the Part D plan.

Individual MAGIJoint MAGIPart D Monthly IRMAA
$109,000 or less$218,000 or less$0.00
Over $109,000–$137,000Over $218,000–$274,000$14.50
Over $137,000–$171,000Over $274,000–$342,000$37.50
Over $171,000–$205,000Over $342,000–$410,000$60.40
Over $205,000–under $500,000Over $410,000–under $750,000$83.30
$500,000 or more$750,000 or more$91.00
Married filing separately: Different IRMAA thresholds apply if you were married and lived with your spouse at any time during the tax year but filed a separate return. IRMAA is determined by Social Security using income information reported to the IRS. Contact Social Security if you believe an IRMAA determination is incorrect or if you have experienced a qualifying life-changing event.
ACA HEALTH INSURANCE — INDIVIDUAL & FAMILY COVERAGE

Affordable Care Act coverage for individuals and families.

What is ACA health insurance?

The Affordable Care Act (ACA) established a health insurance marketplace where individuals and families can compare private major medical health plans. ACA-compliant plans include important consumer protections and cover a broad range of health care services.

How does it work?

You can compare plans available in your area based on monthly premium, deductible, provider network, prescription coverage, and other benefits. Depending on household income and eligibility, financial assistance may be available to help lower the cost of coverage.

  • Coverage options for individuals and families
  • Coverage for essential health benefits such as preventive care, doctor visits, hospital services, and prescriptions
  • Pre-existing conditions cannot be used to deny ACA-compliant major medical coverage
  • Financial assistance may be available for eligible households
  • Enrollment is generally available during Open Enrollment or after certain qualifying life events

Why is health insurance important?

Medical expenses can become significant very quickly. Health insurance can help reduce the financial impact of doctor visits, prescription drugs, emergency care, hospital stays, surgeries, and other covered services. It can also make preventive care and routine treatment easier to access.

Need help comparing your options? Great Nation Insurance can help explain available ACA plans, premiums, deductibles, provider networks, and enrollment options so you can make a more informed decision.

Request an ACA Health Insurance Quote

Tell us a little about the coverage you need.

Submitting this form does not enroll you in coverage or bind insurance. A licensed agent will contact you to discuss eligibility, available options, enrollment periods, and next steps.
OR CALL
CALL (918) 895-2000
AUTO INSURANCE — OKLAHOMA ONLY

Coverage built around how you drive.

Auto insurance is more than meeting a state requirement. The right policy can help protect you, your passengers, your vehicle, and your finances after an accident, theft, weather event, or other covered loss.

  • Liability, collision, and comprehensive coverage
  • Uninsured / underinsured motorist options
  • Roadside assistance and rental reimbursement options
  • Multi-car and home-and-auto bundle opportunities

We need vehicle and driver details to quote accurately. This form gathers the basics so your agent can start with useful information.

Request an Auto Insurance Quote

Available for Oklahoma drivers. Tell us about the driver and vehicle.

Submitting this form does not bind coverage. Final rates and eligibility depend on carrier underwriting and complete driver/vehicle information.

Understanding Typical Auto Insurance Coverages

Your policy can be built from several different coverages. Here is what the most common options generally do and why they may matter.

Liability Coverage

What it covers: Bodily injury and property damage you are legally responsible for causing to other people in a covered accident, subject to your policy limits.

Why you may need it: It can help protect your finances when you are at fault, and Oklahoma drivers are generally required to carry minimum liability insurance.

Collision Coverage

What it covers: Damage to your own covered vehicle from a collision with another vehicle or object, generally after your deductible.

Why you may need it: Liability insurance does not pay to repair your own car after an at-fault collision. Lenders or lessors may also require collision coverage.

Comprehensive Coverage

What it covers: Certain non-collision losses to your covered vehicle, such as theft, hail, fire, vandalism, falling objects, or animal strikes, subject to policy terms and deductible.

Why you may need it: It helps protect the value of your vehicle from losses that have nothing to do with a traffic collision.

Uninsured / Underinsured Motorist

What it covers: Depending on the coverage selected and applicable law, it can help with covered losses when an at-fault driver has no insurance or not enough insurance.

Why you may need it: Another driver may cause an accident but lack enough insurance to pay for the injuries or losses they caused.

Medical Payments Coverage

What it covers: Covered medical or funeral expenses for you and, depending on the policy, passengers after an auto accident, regardless of fault, up to the selected limit.

Why you may need it: It may help with immediate accident-related medical expenses that your health insurance does not fully cover.

Rental Reimbursement

What it covers: A specified amount toward a temporary rental vehicle when your covered auto is being repaired after a qualifying covered loss.

Why you may need it: It can reduce the cost of staying mobile while your vehicle is unavailable.

Roadside Assistance

What it covers: Depending on the policy, services may include towing, battery jump-starts, flat-tire assistance, lockout help, or fuel delivery.

Why you may need it: It provides convenient help when your vehicle becomes disabled away from home.

Coverage, limits, deductibles, exclusions, and availability vary by insurer and policy. Your policy contract controls the actual coverage.

HOME INSURANCE — OKLAHOMA ONLY

Protect the place you call home.

Homeowners insurance can help protect your house, personal belongings, liability exposure, and additional living expenses after a covered loss. We can also look for opportunities to bundle your home and auto coverage.

  • Dwelling and other structures coverage
  • Personal property protection
  • Personal liability and medical payments
  • Loss-of-use coverage and optional endorsements

Property details matter. These questions give us a better starting point for an accurate home insurance conversation.

Request a Home Insurance Quote

Available for Oklahoma properties. Tell us about the property you want to protect.

Submitting this form does not bind coverage. A complete property review may be required before a carrier can provide a final quote.

Understanding Typical Homeowners Insurance Coverages

A homeowners policy usually combines several types of protection. Here is what common coverages generally do and why they may matter.

Dwelling Coverage

What it covers: The structure of your home when it is damaged by a covered cause of loss, subject to policy terms and limits.

Why you may need it: Rebuilding or repairing a home after a major covered loss can be extremely expensive, and mortgage lenders generally require property insurance.

Other Structures Coverage

What it covers: Covered detached structures on your property, such as a detached garage, fence, shed, or gazebo.

Why you may need it: These structures can also be damaged by storms, fire, and other covered losses even though they are not part of the main house.

Personal Property Coverage

What it covers: Your covered belongings—such as furniture, clothing, appliances, and electronics—when damaged, destroyed, or stolen by a covered cause of loss.

Why you may need it: Replacing the contents of a home all at once can create a substantial financial burden.

Personal Liability Coverage

What it covers: Certain legal liability claims if you or a covered household member unintentionally injures someone or damages their property, subject to policy terms.

Why you may need it: A serious injury or liability claim can result in significant legal defense costs or damages.

Medical Payments to Others

What it covers: Certain smaller medical expenses if a guest is accidentally injured on your property, generally without requiring a determination of legal liability.

Why you may need it: It can help address minor guest injuries before they develop into larger disputes.

Loss of Use / Additional Living Expenses

What it covers: Certain additional costs of living elsewhere when a covered loss makes your home uninhabitable, subject to limits and policy terms.

Why you may need it: Hotel bills, temporary housing, and increased living costs can add up quickly while a home is repaired.

Water Backup Coverage

What it covers: Water backup coverage is typically an optional endorsement that may help pay for covered damage when water or sewage backs up through a drain or sewer, or when a sump pump overflows or fails, subject to the policy's terms, limits, deductible, and exclusions.

Why you may need it: A sewer or drain backup can damage flooring, walls, furniture, appliances, and other belongings, and cleanup can be expensive. Standard homeowners policies may exclude or limit this type of loss unless water backup coverage is specifically added.

Important distinction: Water backup coverage is not the same as flood insurance. It generally does not cover rising surface water or other flooding that requires a separate flood policy.

Optional Endorsements

What they cover: Endorsements can modify or add protection for needs not fully addressed by a standard policy, depending on the insurer—for example, certain valuables, equipment breakdown, water backup, or other exposures.

Why you may need them: Standard homeowners policies have limitations and exclusions, so additional protection may be appropriate for your property and belongings.

Important: Standard homeowners insurance generally does not cover flood damage, and earthquake coverage is also typically separate or specially endorsed. Coverage varies by insurer. Your policy contract controls the actual coverage.

More Ways to Protect Your Health and Finances

Great Nation Insurance can also help you explore supplemental coverage designed to help with expenses that major medical or Medicare coverage may not fully address. Availability and benefits vary by carrier and state.

Dental Insurance

Dental insurance can help you stay on top of routine oral health care while giving you added financial protection when more extensive dental work is needed. Depending on the plan, benefits may be available for preventive, basic, and major services.

  • Preventive care: Plans may help with routine exams, cleanings, and X-rays, making it easier to maintain regular dental care.
  • Basic services: Depending on the plan, coverage may help with fillings, simple extractions, and other common procedures.
  • Major services: Some plans may provide benefits for crowns, bridges, dentures, root canals, or other larger procedures after applicable waiting periods.
  • More predictable costs: Dental coverage can help reduce the impact of paying the full cost of covered services out of pocket.
  • Individual and family options: Coverage options may be available for one person, couples, or families.

Why consider it? Regular dental care can become expensive without coverage, especially when an unexpected procedure is needed. The right plan can help you budget for care and encourage preventive visits before small dental problems become larger ones.

ASK ABOUT DENTAL COVERAGE

Cancer Insurance

Cancer insurance is supplemental coverage designed to provide additional financial support following a covered cancer diagnosis. Benefits can help you handle costs and everyday financial pressures that may continue while you are receiving treatment.

  • Supplemental benefits: Depending on the policy, benefits may be paid for covered diagnoses, treatments, hospital stays, or other specified cancer-related services.
  • Helps with out-of-pocket costs: Benefits can provide extra money when deductibles, copays, coinsurance, or other expenses begin to add up.
  • Everyday expenses matter too: Policy benefits may help relieve financial pressure from transportation, lodging, household bills, or other needs while undergoing treatment.
  • Works alongside health coverage: Cancer insurance is intended to supplement—not replace—Medicare or major medical insurance.
  • Added financial protection: A serious diagnosis can affect both health and household finances; supplemental coverage can provide another layer of protection.

Why consider it? Health insurance may cover much of the medical treatment, but a cancer diagnosis can create additional expenses and financial strain. Cancer coverage can help provide an extra financial cushion, subject to the policy's covered conditions and benefits.

ASK ABOUT CANCER COVERAGE

Hospital Indemnity

Hospital indemnity insurance is supplemental coverage that can pay fixed benefits for covered hospital admissions, stays, or other specified services. It can help provide extra financial protection when a hospitalization creates costs beyond what your primary health coverage pays.

  • Hospital admission benefits: Some plans pay a specified benefit when you are admitted for a covered hospital stay.
  • Daily hospital benefits: Depending on the policy, additional benefits may be payable for covered days spent in the hospital.
  • Helps with cost sharing: Benefits can help offset deductibles, copays, coinsurance, and other out-of-pocket expenses.
  • Can complement existing coverage: Hospital indemnity may be used alongside Medicare or major medical insurance, subject to plan rules.
  • Extra financial flexibility: Fixed benefits can help reduce the financial disruption that often comes with an unexpected hospital stay.

Why consider it? Even with health insurance, a hospital stay can leave you responsible for significant out-of-pocket costs. Hospital indemnity coverage can provide an additional layer of financial protection when you need it most.

ASK ABOUT HOSPITAL COVERAGE

Product availability, eligibility, benefit amounts, limitations, and exclusions vary by carrier and state. A licensed agent can review available options with you.

CUSTOMER REVIEWS

Google Reviews

Great Nation Insurance is proud of the feedback our clients have shared. Read featured customer experiences below, or visit our verified Google Business listing to browse the complete collection of Google Reviews.

★★★★★ Google Review

Bryan Covalt

“Darren Chang was so pleasant to work with. He was very informative, personable yet very professional. He made what seemed to be an overwhelming task turn out to be quite doable.”

★★★★★ Google Review

Carla Hafner

“Darren Chang was very professional and helpful in getting me set up with my Medicare Supplement and following up with me to make sure I got my Medicare part A and B set up in a timely manner and then finished up with my part D. Could not have asked for a better agent.”

★★★★★ Google Review

Frank Macias

“Great Nation insurance is the best Mr Chang did an awesome job helping us with our insurance I recommend great Nation insurance to all my friends and family thanks again for being there for us ☺️”

★★★★★ Google Review

Angela Alred

“Darren is the BEST!, so professional,, he will answers all ur questions anytime of day and explain the plan so detail and easy to underhand , i will recommand him to all my friends and family members , i wish i had contacted him way back i would had saved money, time and frustration.. thank you so very much from the bottom of my heart .”

★★★★★ Google Review

Merry wong

“I saved over 1200.00 switching from Plan F to Plan G thanks to Darren Chang at Great Nation Insurance! The only difference in both plans was a deductible on Plan G which was under 200.00, and that was only paid once a year if I used my plan. I'm very happy with the savings!!”

★★★★★ Google Review

Collin B

“Great people and very knowledgeable They helped out my parents get their Medicare supplements and made the whole process very easy and smooth, highly recommended!”

VIDEO TESTIMONIALS

Hear From Some Of Our Clients

Watch real customer testimonials and hear about their experience working with Great Nation Insurance.

Customer Testimonial 1

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Customer Testimonial 8

Customer Testimonial 9

Customer Testimonial 10

Customer Testimonial 11

Customer Testimonial 12

★★★★★

Want to read every review?

Open Great Nation Insurance on Google to see the complete, current collection of customer reviews directly from Google.

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Great Nation Insurance agency staff
MEET OUR TEAM

Great Nation Insurance

When you contact Great Nation Insurance, you are working with a team committed to personal service, clear explanations, and helping you understand your insurance options.

Have a question or need help with your coverage? Give us a call or request a consultation and a member of our team will be happy to assist you.

CALL (918) 895-2000

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Helpful insurance videos, Medicare updates, coverage tips, and answers to common questions from Great Nation Insurance.

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