How to Compare Health Insurance Plans

Step one: start with your doctors and your prescriptions

Before you look at a single price, write down the physicians and facilities you actually use — primary care, any specialists, your hospital — and every prescription you take, with the dosage.

A plan that does not include them is not a plan, whatever it costs. This step eliminates options quickly and it is the one people skip.

If you have a chronic condition, are mid-treatment, or are pregnant, this step is not optional. Continuity of care matters more than a premium difference.

Step two: the five numbers that describe a plan

Once you have a shortlist of plans that include your providers, these are the numbers that actually describe what you are buying.

• Premium — what you pay every month to have coverage at all
• Deductible — what you pay out of pocket before the plan starts sharing costs
• Copay — the flat amount for a visit or a prescription, often before the deductible is met
• Coinsurance — your percentage share of a bill after the deductible
• Out-of-pocket maximum — the ceiling on what you pay in a year, and the number that matters most in a bad year

Step three: price the full year, not the month

Multiply the premium by twelve. Then estimate your routine costs — regular visits, prescriptions, any planned procedures — and add what you would pay on each plan. Then add the worst case: the out-of-pocket maximum.

Two plans can have very different monthly premiums and almost identical annual costs once you account for how often you actually use care. Conversely, the cheapest premium can be the most expensive plan for a household that sees doctors regularly.

Step four: understand the network type

Network structure shapes what you can do without a referral and whether out-of-network care is covered at all. It is often the single biggest practical difference between two plans with similar numbers.

• HMO — care coordinated through a primary care physician, referrals required, out-of-network generally not covered
• PPO — wider network, no referral needed, out-of-network care usually covered at a higher cost
• EPO — no referrals, but out-of-network care is not covered
• POS — a hybrid with a primary care physician and some out-of-network coverage with a referral
• HDHP — a high deductible paired with a tax-advantaged savings account

Step five: check the prescription tiers, drug by drug

Formularies change. A medication that sits on a low tier with one carrier can be on a specialty tier with another, and that difference alone can outweigh a premium gap.

If you take a brand-name drug or a specialty medication, check it explicitly on each plan before you enroll. This is the second most common source of expensive surprises after networks.

Step six: the pre-enrollment checklist

Run this list against your top choice before you submit the application.

• Every doctor you use is in network, verified on the carrier's own directory
• Your hospital and preferred pharmacy are in network
• Every prescription is on the formulary, at a tier you can afford
• You understand whether the deductible applies to prescriptions
• You know your out-of-pocket maximum for the year
• You know what happens in an emergency, and whether emergency care is covered anywhere
• You know the plan's effective date, and that it is before your current coverage ends

The four mistakes people make most often

Choosing on premium alone, and discovering the deductible in February. Assuming a doctor is in network because they accepted the plan two years ago. Skipping the formulary check for a medication they have taken for years. And waiting until the last day of the enrollment window, when there is no time to fix a problem.

None of these are complicated to avoid. They just require doing the comparison in the right order.