Health Maintenance Organization
4,586 Health Maintenance Organization providers across the U.S.
Carenary lists 4,586 Health Maintenance Organization providers across the United States, sourced from the public NPPES NPI Registry maintained by the Centers for Medicare & Medicaid Services. Browse Health Maintenance Organization by city and state to compare practice locations, view phone numbers and addresses, and confirm each provider's National Provider Identifier. Both individual practitioners and healthcare organizations are included, so you can find the right care wherever you are.
What is a Health Maintenance Organization?
(1) A form of health insurance in which its members prepay a premium for the HMO's health services which generally include inpatient and ambulatory care. For the patient, an HMO means reduced out-of-pocket costs (i.e. no deductible), no paperwork (i.e. insurance forms), and only a small copayment for each office visit to cover the paperwork handled by the HMO; (2) A organization of health care personnel and facilities that provides a comprehensive range of health services to an enrolled population for a fixed sum of money paid in advance for a specified period of time. These health services include a wide variety of medical treatments and consults, inpatient and outpatient hospitalization, home health service, ambulance service, and sometimes dental and pharmacy services. The HMO may be organized as a group model, an individual practice association (IPA), a network model or a staff model.
Top cities for Health Maintenance Organization
Health Maintenance Organization providers
How to choose a Health Maintenance Organization
- Verify the NPIEvery listing shows a National Provider Identifier you can confirm on the official CMS registry.
- Check they're accepting patientsCall ahead to confirm availability and whether they take new patients.
- Confirm insuranceAsk whether they're in-network for your plan before you schedule.
- Consider location & hoursUse the map and address on each profile to find a convenient option.
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Frequently asked questions
What does a Health Maintenance Organization do?
(1) A form of health insurance in which its members prepay a premium for the HMO's health services which generally include inpatient and ambulatory care. For the patient, an HMO means reduced out-of-pocket costs (i.e. no deductible), no paperwork (i.e. insurance forms), and only a small copayment for each office visit to cover the paperwork handled by the HMO; (2) A organization of health care personnel and facilities that provides a comprehensive range of health services to an enrolled population for a fixed sum of money paid in advance for a specified period of time. These health services include a wide variety of medical treatments and consults, inpatient and outpatient hospitalization, home health service, ambulance service, and sometimes dental and pharmacy services. The HMO may be organized as a group model, an individual practice association (IPA), a network model or a staff model.
How many Health Maintenance Organization providers are there in the United States?
Carenary lists 4,586 Health Maintenance Organization providers nationwide, sourced from the official CMS NPPES NPI Registry. You can browse them by state and city to find one near you.
How do I verify a Health Maintenance Organization's credentials?
Every listing on Carenary includes the provider's National Provider Identifier (NPI) from the official CMS registry. Confirm any provider's record at the NPI Registry (npiregistry.cms.hhs.gov), and verify state licensure with the relevant licensing board before scheduling care.
Does Carenary show Health Maintenance Organization ratings or reviews?
No. Carenary is a free directory built on official government data and does not host patient reviews or star ratings. We focus on accurate, verifiable contact and credential information so you can reach providers directly.