About one in nine people in Missouri ages 19 to 64 buy their own health insurance on the marketplace or directly from an insurance company. We crunched the numbers on 96 health insurance plans to find the best and most affordable in Missouri.
NerdWallet's editorial team built our own data-driven marketplace health insurance rating system based on costs, claims denial rates, medical management programs, dental care, complaints, government quality data and more. We scored plans representing more than 95% of marketplace health insurance enrollment in Missouri from companies selling plans for 2026.
Here are the best health insurance companies in Missouri
Best overall: Ambetter from Home State Health
Most affordable: Oscar Insurance Company
Compare the best health insurance plans in Missouri
Company name | NerdWallet rating | Plan types | Claims denial rate | Avg. Silver premium | Learn more |
|---|---|---|---|---|---|
BEST OVERALL | partnered with Stride Health Call a consumer advocate at Stride Health Mon–Fri: 8am–4pm PST | ||||
Ambetter from Home State Health (Missouri) | 5.0/5 | EPO | 18.8% (Fewer than average) | $624.88 | |
MOST AFFORDABLE | partnered with Stride Health Call a consumer advocate at Stride Health Mon-Fri 8am-4pm PST | ||||
4.0/5 | EPO | 24.6% (More than average) | $544.31 | ||
How we choose the best health insurance companies
👋 I’m Alex Rosenberg, a lead writer and content strategist covering health insurance. I built NerdWallet’s health insurance rubric and did the research for this page to find the best health insurance options in the state. I gathered and analyzed data across four major categories:
- 💰 Cost
Plans with lower costs, such as premiums, deductibles, copays, coinsurance and out-of-pocket maximums, score the best.
We evaluate plans’ costs using marketplace health plan datasets. These enormous spreadsheets include as many as 149 discrete data points for over 100,000 plan offerings in 31 states that use the federal marketplace (other states use their own separate marketplaces).
It’s not feasible to evaluate every kind of cost in every scenario, so we use these as a sample:
Premiums
Premiums have the highest weight in our scoring. We compare each plan’s unsubsidized premium for a 30-year-old individual as a level playing field for comparison. We score plans based on how cheap they are compared to other plans of the same type and metal — Silver HMOs vs. other Silver HMOs, for example.
Deductibles
The amount you need to pay out of pocket before your plan starts to pay for its share of covered benefits. The lower the deductible, the better.
Out-of-pocket costs
We analyze each plan’s copays, coinsurance and deductibles for primary care visits, specialist appointments, emergency care and several tiers of prescription drugs.
- 🩺 Coverage
Plans score higher if they made covered medical care and prescription drugs more easily accessible.
We evaluate plans’ coverage using the same marketplace health plan datasets that we use to analyze costs along with additional data from government-provided “public use files.”
All marketplace plans have to cover the same essential health benefits, but some plans’ coverage is more usable than others. We score them on how coverage works.
Pre-deductible benefits
We give a strong scoring preference to plans that cover certain benefits before (and also after) you’ve met the deductible. Plans get lower scores when they don’t start to cover things like doctor’s office visits or prescription drugs until you’ve paid the full deductible.
Dental coverage
Plans that cover adult dental care also get more points for coverage than plans that don’t. (Unlike children’s dental care, adult dental care isn’t considered an essential health benefit, so plans may or may not cover it.)
- 📞 Customer experience
Plans score well when they have fewer denials, lower complaint rates and stronger customer satisfaction surveys.
We use three different data sources to evaluate customer experience:
Customer complaints
We collect and analyze customer complaint data from the National Association of Insurance Commissioners. For each company, we calculate a multi-year average complaint rate.
NerdWallet conducts its data analysis and reaches conclusions independently and without the endorsement of the NAIC.
Denials
Based on claims data from the Centers for Medicare & Medicaid Services, we rank companies based on how often they deny in-network claims. The fewer denials, the better.
Satisfaction scores
We rate plans based on how well or poorly they score on government surveys evaluating customer satisfaction.
- 📈 Quality
Companies earn points based on their medical management programs and rankings on government ratings of medical quality.
We use two sources to score plans’ quality of care:
Government ratings
Marketplace plans get star ratings from the government based on how well they manage members’ health care, monitor conditions and provide certain medical services. We rank plans based on how highly they score on these ratings.
Medical management programs
Some plans offer medical management programs to help members with certain conditions, such as asthma, diabetes, depression, pregnancy and pain management. Plans score points based on how many of these programs they offer.
Best overall: Ambetter from Home State Health
Why we picked it: Ambetter from Home State Health has the highest rating of the health insurance companies we reviewed in Missouri.
Ambetter stands out with some of the state’s best government quality ratings. If you see specialists for care, the company's plans charge relatively low out-of-pocket costs. And about half of its plans offer adult dental coverage, which can be rare from competitors.
Ambetter’s out-of-pocket costs for primary care are higher than most competitors, however, and its deductibles aren’t cheap.
Ambetter from Home State Health (Missouri)Mon–Fri: 8am–4pm PST
Pros
- Solid government quality ratings.
- Affordable out-of-pocket costs to visit specialists.
- Many plans offer dental.
Cons
- Higher out-of-pocket costs for primary care.
- Pricey deductibles.
Most affordable: Oscar Insurance Company
Why we picked it: Oscar Insurance Company has the lowest average premiums for Expanded Bronze, Silver and Gold plans, among companies we reviewed. Its copays for generic drugs are also some of the lowest in the state.
Oscar denies more in-network claims than competitors, however. And if you take brand-name prescription drugs, Oscar’s copays and/or coinsurance can be high.
Mon-Fri 8am-4pm PST
Pros
- Low premiums across metal tiers.
- Cheap copays for generic drugs.
Cons
- Denies more in-network claims than average.
- Higher out-of-pocket costs for brand-name drugs.
- See all marketplace insurance companies in Missouri.
Ambetter from Home State Health.
Anthem Blue Cross and Blue Shield.
Blue Cross and Blue Shield of Kansas City.
Cox HealthPlans.
Medica.
Oscar Insurance Company.
UnitedHealthcare.
How to choose a marketplace health insurance plan
There can be a lot of moving parts when shopping for health insurance coverage. Here are a few questions to help you think through your needs and options:
How much are the plan’s costs? Do you understand what the plan’s premium, deductibles, copays and/or coinsurance will be? Can you afford them?
Are you eligible for subsidies? Whether applying yourself or with an agent/broker, be sure to enter accurate information to check whether you’re eligible for subsidies through the marketplace.
Is your doctor in-network? If you have a preferred doctor (or doctors) or hospital, make sure they participate in the plan’s network.
Are your prescriptions covered? If you’re on medication, understand how the plan covers it. What tier are your prescription drugs on, and are there any coverage rules that apply to them?
Is there dental coverage? Does the plan offer routine coverage for vision, dental and hearing needs?
If you have questions or need help navigating the marketplace, you can get help from a trained assister or an agent/broker at HealthCare.gov.
Off-marketplace health insurance in Missouri
Some marketplace plans have matching policies that can be bought outside of the marketplace. You can choose to buy an off-marketplace plan rather than a marketplace plan during open enrollment (Nov. 1 through Jan. 15), but subsidies aren’t available if you do so.
You might be able to find other kinds of health insurance plans sold outside of the marketplace (and outside of open enrollment), such as limited, short-term or alternative health plans. These plans might not have the same coverage and/or consumer protections as plans sold on the marketplace.
It’s a good idea to check whether an off-marketplace plan offers “minimum essential coverage.” If not, the plan might be allowed to do things that most health plans can’t, such as deny coverage due to health status, limit coverage of pre-existing conditions and/or not cover essential health benefits.
Best Medicare plans in Missouri
Medicare is available for people age 65 and older and people living with certain medical conditions. There are many kinds of Medicare coverage, and the best choice for you can depend on your health, finances and preferences. Check out NerdWallet’s reviews of the best Medicare plans:
Health insurance resources in Missouri
Missouri Department of Health and Senior Services: Provides resources and information about health and safety topics such as immunizations, adolescent and teen health, and food safety.
Missouri Medicaid: Provides information for families, individuals, providers and partners on MO HealthNet, Missouri’s Medicaid program.
Missouri Department of Insurance: Provides insurance information for consumers and handles insurance-related complaints.
Article sources
NerdWallet writers are subject matter authorities who use primary, trustworthy sources to inform their work, including peer-reviewed studies, government websites, academic research and interviews with industry experts. All content is fact-checked for accuracy, timeliness and relevance. You can learn more about NerdWallet's high standards for journalism by reading our editorial guidelines.
- 1.U.S. Census Bureau. Health Insurance Coverage and Type by State. Accessed Nov 24, 2025.
- 2.Centers for Medicare & Medicaid Services. Issuer Level Enrollment Data. Accessed Nov 24, 2025.
Marketplace health insurance ratings methodology
NerdWallet evaluates marketplace health insurance plans based on marketplace data about plans’ premiums, out-of-pocket costs and benefits, prescription drug coverage, dental coverage, government quality rating data, complaint data, records about how plans approve and deny claims and more.
We evaluate individual plans and then aggregate scores to the company level. When a plan is missing data for a certain metric, we exclude it from calculations. For example, the federal government calculates official star ratings for marketplace health insurance plans, but many plans are unrated, and others have incomplete ratings. NerdWallet’s analysis incorporates government quality ratings when they’re available, but doesn’t penalize plans that are unrated.
These ratings are a guide, but we encourage you to shop around and compare several insurance quotes to find the best coverage and rate for you. NerdWallet does not receive compensation for any reviews. Read our editorial guidelines for more information.
Insurer complaints methodology
We examined complaints received by state insurance regulators and reported to the National Association of Insurance Commissioners. To assess how insurers compare to one another, the NAIC calculates a complaint index each year for each subsidiary, measuring its share of total complaints relative to its size, or share of total premiums in the industry.
To evaluate a company’s complaint history, we calculated a similar index for each insurance company, weighted by market shares of each subsidiary. We score companies based on this index of how many complaints the company receives relative to its market share.
NerdWallet conducts its data analysis and reaches conclusions independently and without the endorsement of the NAIC.