NAICS Code 621491 - HMO Medical Centers

Government Level - NAICS 6-Digit

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Verified Companies


Est. Employment


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NAICS Code 621491 Description

This U.S. industry comprises establishments with physicians and other medical staff primarily engaged in providing a range of outpatient medical services to the health maintenance organization (HMO) subscribers with a focus generally on primary health care. These establishments are owned by the HMO. Included in this industry are HMO establishments that both provide health care services and underwrite health and medical insurance policies.

NAICS Code 621491 - HMO Medical Centers is a final level code of the “Other Outpatient Care Centers” Sector. There are 790 companies verified as active in this industry in the USA with an estimated employment of 49,571 people.

Industry Sector

Other Outpatient Care Centers

Annual Payroll


Total Revenue


SBA Size Standard

Annual Revenue Limit of $35,000,000

Parent Category - 5-digit Level (less specific)

Marketing: NAICS Codes (8-digit) for HMO Medical Centers

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Industry Examples of NAICS 621491

Common types of examples within NAICS Code 621491 - HMO Medical Centers are:

  • Group hospitalization plans providing health care services
  • Health maintenance organization (HMO) medical centers and clinics
  • HMO (health maintenance organization) medical centers and clinics

Industry Image

Example photo for industry NAICS 621491 - HMO Medical Centers . This image represents an activity or product found in this industry.


For some business types, there may be a similar industry to NAICS Code 621491 - HMO Medical Centers that is a better classification match. Health practitioners or health practitioner groups contracting to provide their services to subscribers of pre-paid health plans are classified in NAICS Code 62111 - Offices of Physicians; NAICS Code 621210 - Offices of Dentists; and NAICS Code 6213 - Offices of Other Health Practitioners; and HMO establishments (except those providing health care services) primarily engaged in underwriting and administering health and medical insurance policies are classified in U.S. NAICS Code 524114 - Direct Health and Medical Insurance Carriers.

Companies compiles comprehensive business data and executive contact leads for businesses within NAICS Code 621491 - HMO Medical Centers . Some of the leading and most notable companies are listed below. To order a list of companies within NAICS Code 621491 - HMO Medical Centers for marketing (postal mailing, telemarketing, emailing) or analytics-use, click on the link below to “Buy Business List”. Our data analysts are standing by to assist in your list setup and target marketing.

Industry Executives

Would you like to email executives in NAICS Code 621491 - HMO Medical Centers ? Below are some of the common job titles available to be targeted.

  • Business Development
  • Chairman
  • C-Level
  • Director
  • Engineering
  • Executive Director
  • Facilities
  • Finance
  • Human Resource
  • IT
  • Manager
  • Marketing
  • Manufacturing
  • Operations
  • Owner
  • Partner
  • President
  • Principal
  • Purchasing
  • Sales
  • Vice President

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Questions & Answers

  • What is the SBA NAICS 621491 revenue limit?

    Businesses with an annual revenue under $35,000,000 are considered small businesses by SBA.

  • How many active businesses operate in NAICS Code 621491?

    There are 790 verified business locations operating primarily in this industry.

  • What was the total revenue for NAICS Code 621491?

    In 2017 the total revenue for HMO Medical Centers was $11,358,608,000

  • What was the annual payroll for NAICS Code 621491?

    In 2017 the annual payroll for HMO Medical Centers was $3,745,045,000

  • How many people work in NAICS Code 621491?

    The number of reported paid employees is 49,571.