Health Maintenance Organization (HMO)

A Health Maintenance Organization (HMO) is a type of health insurance plan that typically restricts coverage to care from doctors who work for or contract with the HMO. It generally won't cover out-of-network care except in an emergency. An HMO may require you to live or work in its service area to be eligible for coverage.

Last updated: July 23, 2023 7 min read

What Is Health Maintenance Organization (HMO)?

A Health Maintenance Organization (HMO) is a type of managed care organization (MCO) that provides a form of health care coverage in the United States that is fulfilled through hospitals, doctors, and other providers with which the HMO has a contract. The Health Maintenance Organization Act of 1973 required employers with 25 or more employees to offer federally certified HMO options if the employer offers traditional healthcare options. Unlike traditional indemnity insurance, an HMO covers care rendered by those doctors and other professionals who have agreed by contract to treat patients in accordance with the HMO's guidelines and restrictions in exchange for a steady stream of customers.

What Is the History of Health Maintenance Organization (HMO)?

The concept of Health Maintenance Organizations (HMOs) in the United States originated in the early 20th century when companies such as Kaiser Permanente began to provide pre-paid health care for industrial workers. This early form of managed care was intended to help workers avoid the significant costs of major services like hospitalization.

The HMO movement gained momentum in the United States after the enactment of the Health Maintenance Organization Act of 1973. This federal law provided grants and loans to provide, start, or expand a Health Maintenance Organization (HMO); removed certain state restrictions for federally qualified HMOs; and required employers with 25 or more employees to offer federally certified HMO options alongside indemnity upon request by employees.

This policy shift led to a significant increase in the number of people enrolled in HMO plans. By the 1980s, many employers were offering HMOs as part of their benefits packages to reduce costs. However, HMOs faced criticism for being overly restrictive with care and for prioritizing cost containment over quality.

The backlash led to changes and other types of managed care organizations, such as Preferred Provider Organizations (PPOs), came into being. Today, while still a significant part of the U.S. healthcare system, HMOs exist alongside various other models of care.

What Are Some Examples of Health Maintenance Organization (HMO)?

  1. Kaiser Permanente
  2. Aetna Health Network
  3. Cigna
  4. Blue Shield of California
  5. Humana
  6. UnitedHealthcare HMO
  7. Anthem Blue Cross HMO
  8. Health Net
  9. Geisinger Health Plan
  10. Group Health Cooperative (Washington-based)
  11. Harvard Pilgrim HMO
  12. Tufts Health Plan HMO

What's the Difference Between Health Maintenance Organization (HMO) and Preferred Provider Organization (PPO)?

  1. Doctor Network: An HMO has a network of local healthcare providers who have agreed to provide care for members under the terms of the contract. In contrast, a PPO has agreements with a network of preferred providers who offer services at reduced rates but members may also choose out-of-network providers usually at higher costs.

  2. Primary Care Physician (PCP): In an HMO plan, members must choose a primary care physician who coordinates all of their health care, including referrals to specialists. PPOs do not require a PCP and members can see any doctor or specialist they want without a referral.

  3. Costs: HMOs generally have lower monthly premiums and out-of-pocket costs, but they also have more restrictions. PPOs tend to have higher premiums and out-of-pocket costs, but offer more flexibility in terms of allowed providers and the need for referrals.

  4. Coverage for Out-of-Network Care: HMOs typically do not cover any out-of-network care, except in the case of emergency. PPOs, on the other hand, partially cover out-of-network care, though it is more expensive than in-network care.

  5. Geographical Reach: PPOs are often preferable for individuals who live in multiple places or travel frequently, due to their nationwide networks of providers. HMOs tend to have more local networks, which may limit coverage when members are away from home.

What Are Some Examples of Preferred Provider Organization (PPO)?

  1. Aetna PPO
  2. Cigna PPO
  3. Blue Cross Blue Shield PPO
  4. UnitedHealthcare PPO
  5. Humana PPO
  6. Kaiser Permanente PPO (available in certain regions)
  7. Anthem PPO
  8. Health Net PPO
  9. Geisinger Gold Preferred PPO (Medicare Advantage Plan)
  10. Tufts Health PPO
  11. Harvard Pilgrim PPO
  12. Highmark Blue Cross Blue Shield PPO

What's the Difference Between Health Maintenance Organization (HMO) and Point of Service Plan (POS)?

  1. Primary Care Physician: Both HMO and POS plans require members to select a Primary Care Physician (PCP) who manages their healthcare and gives referrals to specialists.

  2. Network Restrictions: HMO plans typically restrict coverage to care from doctors who work for or contract with the HMO. In POS plans, members can go out-of-network, but at a higher cost.

  3. Cost: POS plans usually have more expensive premiums and out-of-pocket costs compared to HMOs, but they also offer more flexibility in choosing healthcare providers.

  4. Referrals: In a POS plan, if a member gets a referral from their PCP, they may see a specialist even outside the network and still get coverage, though out-of-network services typically cost more than in-network ones.

  5. Coverage for Out-of-Network Care: POS plans allow members to get care from out-of-network health care providers, but at a higher cost, with greater out-of-pocket expenses and deductibles. HMO plans, on the other hand, do not cover out-of-network care except in emergencies.

  6. Geographical Reach: Similar to HMOs, POS plans have local networks which may limit the coverage when members are away from home. But unlike HMOs, POS plans still provide some level of coverage for out-of-network services.

Both HMO and POS plans are geared towards organised healthcare delivery, aiming to control costs by limiting where members can get care, with POS offering slightly more flexibility but at a higher cost.

What Are the Benefits of Health Maintenance Organization (HMO)?

  1. Lower Costs: HMOs generally have lower out-of-pocket costs and lower premiums than other types of health plans.

  2. Simplified Process: Because your primary care physician coordinates your care, they will have a comprehensive understanding of your health and healthcare needs.

  3. Preventive Care: Many HMOs place an emphasis on wellness and preventive care, often covering services like vaccinations and health screenings at no additional cost.

  4. In-Network Services: If you obtain services from network providers, all of the costs for approved services are covered.

  5. No Claim Forms: Since you're assigned to a primary care physician within the network, you usually don't have to file claim forms.

  6. Comprehensive Coverage: HMO plans typically cover a wide array of healthcare services including doctor visits, hospital stays, surgery, lab tests, x-rays, maternity, and pediatric care.

  7. Predictability: With co-pays and a clear list of covered services, an HMO plan can offer more predictability in healthcare expenses, making budgeting easier.

Remember, the benefits can vary from plan to plan, so it's important to read all plan materials to understand the specific benefits and limitations.

What Are the Negative Effects of Health Maintenance Organization (HMO)?

  1. Limited Coverage Outside the Network: HMOs generally will not cover care received from providers outside their network, unless it's an emergency. This can be problematic for individuals who travel frequently or for those who prefer a specialist who is out-of-network.

  2. Limited Choice: Because you must choose doctors within the HMO network, your choice of doctors and hospitals is limited. This may be an issue if you have preferred doctors or specialists who are not part of the HMO’s network.

  3. Need for Referrals: Generally, patients can't see a specialist without a referral from their Primary Care Physician (PCP). Some people may find this requirement cumbersome and time-consuming, and it may delay necessary care.

  4. Quality of Care Concerns: Because HMOs are designed to manage healthcare costs, there's a perception that they may limit necessary care or promote less costly, potentially less effective treatments. This isn't necessarily true, but it's a concern some people have.

  5. Area Restriction: If you live or work outside of the coverage area of the HMO, it might not be the best choice for you.

  6. Change in Employment: If your employer changes the HMO provider or if you change jobs, you may need to change providers, which means you may not be able to continue seeing a trusted doctor.

Remember, each HMO plan can be different, so it's important to read all plan materials so you understand its specific rules and restrictions.

Which Types of Employers Are Most Impacted by the Use of Health Maintenance Organizations (HMOs)?

  1. Large Corporations: Large corporations with hundreds or thousands of employees are significantly impacted by the use of HMOs. The costs of providing healthcare for such a large workforce can be substantial, and HMOs can provide a means to manage these costs.

  2. Small and Medium Sized Businesses: These employers are particularly affected, as they often struggle to provide affordable healthcare options to employees. The lower costs associated with HMO plans can be a valuable tool in maintaining a healthy workforce without breaking the bank.

  3. Public Sector Employers: Government bodies, such as state and local agencies, are often major employers and are heavily impacted by healthcare costs. HMOs can help manage costs while meeting the healthcare needs of their employees.

  4. Non-Profit Organizations: Non-profits often operate with limited budgets and need to carefully manage costs. The lower costs of HMOs can help these organizations provide health benefits to their employees.

  5. Educational Institutions: Schools, colleges, and universities often employ vast numbers of staff and faculty. They can benefit from HMO plans to provide comprehensive healthcare at a manageable cost.

Regardless of the type of employer, the value of an HMO will depend on various factors, including the size of the company, the health of the employees, the local healthcare marketplace, and the specifics of the HMO’s contract. Each employer will need to weigh the pros and cons to determine if an HMO is a viable choice for their organization.

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