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  2. UnitedHealth Group - Wikipedia

    en.wikipedia.org/wiki/UnitedHealth_Group

    Selling insurance products under UnitedHealthcare, and health care services under the Optum brand, it is the world's ninth-largest company by revenue and the largest health care company by revenue. The company is ranked 8th on the 2024 Fortune Global 500. [4] UnitedHealth Group had a market capitalization of $460.3 billion as of December 20, 2024.

  3. Medical billing - Wikipedia

    en.wikipedia.org/wiki/Medical_billing

    In order to be clear on the payment of a medical billing claim, the health care provider or medical biller must have complete knowledge of different insurance plans that insurance companies are offering, and the laws and regulations that preside over them. Large insurance companies can have up to 15 different plans contracted with one provider.

  4. Health insurance marketplace - Wikipedia

    en.wikipedia.org/wiki/Health_insurance_marketplace

    The U.S. Department of Health and Human Services (HHS) and Internal Revenue Service (IRS) on May 23, 2012, issued joint final rules regarding implementation of the new state-based health insurance exchanges to cover how the exchanges will determine eligibility for uninsured individuals and employees of small businesses seeking to buy insurance ...

  5. Optum - Wikipedia

    en.wikipedia.org/wiki/Optum

    Optum serves employers, government agencies, health plans, life science companies, care providers and individuals and families offering products in data and analytics, pharmacy care services, health care operations and delivery, population health management and advisory services. [7]

  6. UnitedHealth says online platform fully functional after ...

    www.aol.com/news/unitedhealth-says-online...

    Change Healthcare is a vital lynchpin in the complex U.S. system for making and clearing insurance claims, connecting providers to not just UnitedHealth but also to CVS Health's Aetna, Elevance ...

  7. National Provider Identifier - Wikipedia

    en.wikipedia.org/wiki/National_Provider_Identifier

    A National Provider Identifier (NPI) is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS). The NPI has replaced the Unique Physician Identification Number (UPIN) as the required identifier for Medicare services, and is used by other payers ...

  8. HealthCare.gov - Wikipedia

    en.wikipedia.org/wiki/HealthCare.gov

    HealthCare.gov is a health insurance exchange website operated by the United States federal government under the provisions of the Affordable Care Act (ACA), informally referred to as "Obamacare", which currently serves the residents of the U.S. states which have opted not to create their own state exchanges.

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