How to Choose a Health Insurance Plan: HMO vs PPO vs HDHP

Updated March 28, 2026 • 10 min read • By National Healthcare Connect

The Four Main Plan Types

HMO (Health Maintenance Organization)

• How it works: You must choose a primary care physician (PCP) who coordinates all your care. Specialist visits require a referral from your PCP.
• Network: In-network only — no coverage for out-of-network except emergencies
• Cost: Usually the lowest premiums and out-of-pocket costs
• Best for: People who have a PCP they like, don't need frequent specialist access, and want to minimize monthly costs
• Downside: Less flexibility; seeing a specialist requires extra steps

PPO (Preferred Provider Organization)

• How it works: See any doctor or specialist without a referral. You pay less for in-network, more for out-of-network — but both are covered.
• Network: In-network and out-of-network (at higher cost)
• Cost: Higher premiums than HMOs, but more flexibility
• Best for: People who need specialist access, travel frequently, or have established care with specific out-of-network providers
• Downside: Higher monthly premiums

EPO (Exclusive Provider Organization)

• How it works: No referrals needed (like a PPO), but no out-of-network coverage (like an HMO)
• Cost: Mid-range premiums
• Best for: People who want specialist flexibility but are comfortable staying in-network

HDHP + HSA (High Deductible Health Plan with Health Savings Account)

• How it works: Lower premiums, but higher deductible you must meet before insurance kicks in (minimum $1,650 single / $3,300 family in 2026). Qualifies you to open an HSA.
• HSA: Triple-tax-advantaged savings account — contributions are pre-tax, growth is tax-free, withdrawals for medical expenses are tax-free. Unused funds roll over forever.
• Cost: Lowest premiums; highest deductible before coverage begins
• Best for: Generally healthy people who don't use much healthcare and want to build tax-free medical savings
• Downside: If you have a major health event before meeting your deductible, you'll pay more out of pocket than with a traditional plan

Key Numbers to Compare

Don't just look at the monthly premium. The total annual cost depends on all of these:

The math that matters: Compare (annual premium) + (estimated out-of-pocket costs based on your typical healthcare use). A plan with lower premiums isn't always cheaper if you see doctors frequently.

Before You Choose: Checklist

• ✅ Check if your current doctors and specialists are in-network
• ✅ Verify your current prescriptions are covered in the plan's formulary (drug list)
• ✅ Calculate your break-even point between a low-premium/high-deductible vs. high-premium/low-deductible plan
• ✅ Check the out-of-pocket maximum — this protects you from catastrophic costs
• ✅ If choosing an HDHP, confirm you're eligible for an HSA and plan to actually contribute to it
• ✅ Review whether any planned procedures (surgery, pregnancy, physical therapy) will occur this year

Open Enrollment and Special Enrollment Periods

You can only change health insurance during specific windows:

• Employer open enrollment: Typically in the fall, for January 1 effective date
• ACA marketplace open enrollment: November 1 – January 15
• Special enrollment period (SEP): 60 days after a qualifying life event — job loss, marriage, divorce, having a child, moving to a new coverage area

Missing open enrollment without a qualifying event means waiting another year — so plan ahead.