What is HMO (Health Maintenance Organization)?
Also known as: Health Maintenance Organization, HMO plan
Definition
An HMO is a managed-care health insurance plan that requires members to receive covered services from a contracted provider network, usually coordinated through a primary care physician (PCP) who issues referrals for specialists. In exchange for the tighter network, HMOs typically charge lower premiums and predictable copays.
Real-World Example
A family in Texas pays $412 a month for an HMO. When their child needs a dermatologist, the PCP first issues a referral. Because the specialist is inside the network, the visit costs a flat $35 copay instead of the $220 the same visit would run under a PPO out-of-network claim.
Why It Matters
Choosing an HMO can cut monthly premiums by 15 to 30 percent compared with a PPO of similar actuarial value, but it also restricts choice. Understanding the network rules before enrollment prevents surprise bills and denied claims — the two most common triggers of consumer disputes filed with state insurance departments.
Frequently Asked Questions
Do HMOs cover out-of-network care?
Only for emergencies. Non-emergency care from an out-of-network provider is generally not covered, and members pay the full billed amount.
Are HMOs cheaper than PPOs?
Yes, on average. HMO premiums run 15–30% lower than comparable PPOs because the insurer contains costs through a narrower network and PCP gatekeeping.