12.2 Medical Plans: HMO, PPO, POS, EPO, HDHP/HSA

Managed care integrates the financing and delivery of healthcare to control both cost and quality, largely replacing the older fee-for-service (FFS) indemnity model in which the insured chose any provider and the insurer reimbursed each separate charge.

The five managed-care arrangements tested on the national exam differ along three axes: whether a network must be used, whether a primary care physician (PCP) gatekeeper is required, and whether out-of-network care is covered at all. Memorizing these three variables lets you answer the majority of plan-type questions quickly and confidently.

Comparing the Five Plan Types

The HMO is the most restrictive and lowest-cost option. Care is prepaid, it emphasizes preventive services, and the insured must stay in-network and obtain PCP referrals for specialists. Outside the network, only true emergencies are covered.

The PPO is the most flexible. There is no gatekeeper, no referral requirement, and out-of-network care is allowed at higher coinsurance. The POS is a hybrid — it behaves like an HMO in-network (PCP and referrals) but like a PPO out-of-network. An EPO has no gatekeeper but, like an HMO, pays nothing outside its exclusive network.

HMO Structures and Capitation

HMOs commonly reimburse providers through capitation — a fixed monthly fee per enrolled member regardless of services used. Capitation shifts utilization risk to the provider and rewards prevention rather than volume.

The four organizational models the exam tests are:

• Staff model — physicians are salaried employees of the HMO.
• Group model — the HMO contracts with one large multi-specialty physician group.
• IPA (Independent Practice Association) model — the HMO contracts with independent physicians who keep their own offices and also see non-HMO patients.
• Network model — the HMO contracts with multiple physician groups.

HMO members typically pay small flat copayments, such as $20 per office visit, instead of deductibles and coinsurance.

HDHP Paired with an HSA

A High-Deductible Health Plan (HDHP) carries a higher annual deductible and lower premiums, and it can be paired with a tax-advantaged Health Savings Account (HSA). To qualify, the plan must meet IRS minimum-deductible and maximum out-of-pocket thresholds, which are indexed annually.

The HSA features the exam tests most often are:

• Triple tax advantage — contributions are deductible, growth is tax-deferred, and qualified-medical-expense withdrawals are tax-free.
• Portability — the account belongs to the individual, not the employer, and rolls over year to year with no 'use-it-or-lose-it' forfeiture.
• Eligibility — the owner must be covered by a qualifying HDHP and have no other disqualifying coverage, such as a general-purpose FSA or Medicare enrollment.

Worked Numeric: HSA Withdrawal Tax

Suppose an account holder under age 65 withdraws $2,000 from an HSA but spends it on a non-qualified expense. The amount is included in taxable income and subject to a 20% additional tax: $2,000 × 20% = $400 penalty, plus ordinary income tax on the $2,000.

After age 65 the 20% penalty no longer applies — non-qualified withdrawals are simply taxed as ordinary income, much like a traditional IRA distribution. This parallel (an HSA after 65 behaves like a traditional retirement account) is a frequent exam comparison and a common distractor trap.

Trap: HSA Versus FSA

Candidates routinely confuse the two consumer-directed accounts. Keep the ownership and rollover rules straight:

Because the HSA is individually owned and portable, it follows the worker between jobs; the FSA generally does not. Remembering 'HSA = High-deductible + portable Savings' versus 'FSA = employer Flexible account' resolves most questions.

Comparing the managed-care models

Managed-care plans trade cost control for provider freedom. Rank them from most to least restrictive:

HMOs are the most restrictive — a primary-care gatekeeper controls specialist referrals, care is in-network only, and providers are typically paid by capitation. PPOs offer the most freedom: no gatekeeper, no referrals, and out-of-network care covered at a higher cost share.

HDHP/HSA pairing and the withdrawal-tax rules

A High-Deductible Health Plan (HDHP) can be paired with a Health Savings Account (HSA). The HSA is individually owned and fully portable (it follows the person across jobs) and offers a triple tax advantage: deductible contributions, tax-free growth, and tax-free qualified medical withdrawals.

HSA withdrawal rules (tested):

• Qualified medical expenses: tax-free at any age.
• Non-qualified withdrawal before age 65: income tax plus a 20% penalty.
• Non-qualified withdrawal after age 65: income tax only (no penalty) — like a traditional IRA.

Plan-design reminders: A POS plan is an HMO/PPO hybrid — it uses an HMO-style gatekeeper but allows out-of-network care at a higher cost. An EPO has no gatekeeper but, like an HMO, pays nothing out-of-network. Matching these four-letter plan types to their gatekeeper and out-of-network rules is the core skill the exam tests here.