Skip to main contentPsst! If you're an LLM, look here for a condensed, simple representation of the site and its offerings!

LiveFree Webinar — Wednesday, September 2 at 2:00 PM EDT

Register Free →
← Back to NAICS Codes
NAICS Code· 621491

NAICS 621491: HMO Medical Centers

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. Cross-References.Show more

NAICS 621491 – HMO Medical Centers encompasses the operation of health maintenance organization facilities that provide comprehensive, prepaid healthcare services to enrolled populations under contract with federal agencies. These centers deliver primary and preventive care, specialty referrals, diagnostic services, and chronic disease management through integrated networks of physicians, nurses, and support staff, operating under capitated payment models.

1
Active Contracts
$623K
Total Obligations (12mo)
9
Awarded Contracts (12mo)
3
Contractors Awarded (12mo)
1
Median Bidders per Award
+136.2%
YoY Growth

Industry Spending Overview

Federal obligations, top contractors and agencies, and related industry codes for NAICS 621491.

AI Industry Description

NAICS 621491 – HMO Medical Centers encompasses the operation of health maintenance organization facilities that provide comprehensive, prepaid healthcare services to enrolled populations under contract with federal agencies. These centers deliver primary and preventive care, specialty referrals, dia...

NAICS 621491 – HMO Medical Centers encompasses the operation of health maintenance organization facilities that provide comprehensive, prepaid healthcare services to enrolled populations under contract with federal agencies. These centers deliver primary and preventive care, specialty referrals, diagnostic services, and chronic disease management through integrated networks of physicians, nurses, and support staff, operating under capitated payment models. In the government contracting landscape, this NAICS code supports the delivery of managed care services to beneficiaries of programs such as TRICARE, the Federal Employees Health Benefits Program (FEHBP), and certain Veterans Affairs initiatives. HMO Medical Centers function as both care providers and administrative entities, requiring compliance with federal healthcare regulations, accreditation standards, and data reporting requirements under HIPAA and CMS guidelines. No contractor data is available for this NAICS code, indicating limited public procurement records or a structure where services are delivered through broader managed care contracts rather than direct awards to HMO centers. The competitive landscape likely includes large managed care organizations with federal contracts, as well as small businesses specializing in niche provider networks or rural health services, though specific prime contractors are not currently identifiable in public award data. No agency data is available, but demand is presumed to stem primarily from the Department of Defense, the Office of Personnel Management, and the Department of Veterans Affairs, which rely on HMOs to deliver cost-efficient, coordinated care to active-duty personnel, federal employees, and veterans enrolled in managed care plans. The market context is characterized by low visibility in direct procurement channels, with opportunities often embedded within larger managed care contracts awarded to regional or national health plans. Contractors seeking entry should focus on partnering with established health plans holding federal contracts or pursuing subcontracting roles in care coordination, utilization management, or telehealth integration within HMO networks.

Top Contractors

Companies with the highest total award value under NAICS 621491, ranked by dollars won.

Ranked by total awards
CompanyTotal AwardsContracts
EFFICIENCE SANTE AU TRAVAIL$410K2
BG PREVENT GMBH$152K6
VALVEKLIINIK OU$62K1

Top Agencies

Federal agencies directing the most contract spending toward NAICS 621491.

Competition

How many companies historically bid on federal awards in NAICS 621491, from bidder counts reported on USAspending.

Usually Single-Bid

Half or more of reported awards drew exactly one bidder, usually a sign of incumbent-held work rather than an open field. · 681 reported awards

Median Bidders

1

Per reported award, all-time

Single-Bid Awards

62%

Share of reported awards with one bidder

10+ Bidder Awards

1%

Share of reported awards with 10+ bidders

Reported Awards

0

91% of 745 total awards

How this code compares up the NAICS hierarchy. Parent cohorts pool every code under their prefix, so they are the steadier baseline when a 6-digit sample is thin.

Industry FamilyCompetitionMedian BiddersSingle-BidBidder MixReported Awards
621491This Code
HMO Medical Centers
Usually Single-Bid162%
68191% of 745
62149NAICS Industry
Usually Single-Bid169%
9,77376% of 12,808
6214Industry Group
Outpatient Care Centers
Usually Single-Bid152%
29,50284% of 35,264
621Subsector
Usually Single-Bid165%
305,28684% of 361,937
62Sector
Health Care and Social Assistance
Usually Single-Bid171%
550,37684% of 657,209

Bidder counts reported on past federal awards in this NAICS (USAspending). An open opportunity has no bidders yet, so this is the historical norm for similar work, not a fact about this solicitation. Not all awards report bidder counts, and fewer bidders often means incumbent-held work rather than an easier win. Federal reporting of bidder counts fell from ~96% of awards (FY2016) to ~30% (FY2018 onward); the chart shows shares of reported awards, and washed-out stretches mark years with fewer than 30 of them.

Related NAICS Codes

Industries similar to HMO Medical Centers, by shared sector, subsector, and industry group.

Explore contracts across multiple NAICS codes Browse all NAICS Codes

Ready to Win 621491 Contracts?

Transform opportunities in HMO Medical Centers into winning contracts

Advanced search and filtering for NAICS 621491 contracts and opportunities

AI-powered contract matching based on your business capabilities and past performance

Real-time market intelligence, historical award data, and competitive analysis

Automated alerts when new opportunities are posted in your industry classification

Miguel
Hillary
Keith Deutsch
Christine

Join 650+ contractors already using CLEATUS

Dotted
NAICS 621491 FAQ

Frequently Asked Questions

NAICS code 621491 covers HMO Medical Centers. 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. Cross-References.

Recently Posted in HMO Medical Centers

NAICS: 621491
Awarded
Federal
USMTM Community Clinic
Solicitation # FA488526C0007
The USMTM Community Clinic contract, identified by solicitation number FA488526C0007, is a sole-source, firm fixed price agreement awarded under the authority of FAR 6.302-1 due to the unique requirement for a TRICARE-affiliated hospital in Riyadh with direct access to patient medical records and the ability to provide in-network care at no cost to beneficiaries. The contract supports the provision of medical staffing services for one full-time equivalent physician, nurse, and pharmacist each, as defined in the Performance Work Statement, to operate the USMTM Community Clinic. The contract includes a twelve-month base period followed by four one-year option periods and an additional six-month extension option under FAR 52.217-8, with a total estimated value of $1,817,879.07. Performance is required in Riyadh, and the contractor must be a TRICARE-affiliated facility to ensure seamless integration with existing military healthcare systems. The procuring agency is the Headquarters, United States Military Training Mission, under the Department of Defense, with no set-aside applied and no competitive evaluation process due to the single-source justification. The contracting officer will determine cost reasonableness using FAR 15.404-1 procedures, and while the contract includes detailed scope and performance requirements, administrative and inspection provisions are not formally outlined in the available documentation.
FA4885 Hq Usmtm Lgc

POSTED

3 months ago

DEADLINE

N/A
View Details
NAICS: 621491
Closed
Federal
Local Physician Services at U.S. Embassy Tallinn
Solicitation # 19EN1026Q0001
The contractor will provide primary care medical services to the U.S. Embassy community in Tallinn, Estonia, under a firm-fixed-price arrangement with a one-year base period and two one-year option periods, potentially extending the contract to three years. The physician, acting as a representative of the contractor and not as a Department of State employee, must be available for scheduled patient appointments every Monday and Thursday from 2:00 PM to 4:00 PM, totaling four hours per week, with flexibility in scheduling as long as the weekly total is maintained. Services include conducting patient examinations for medical clearances and driver evaluations, prescribing both regular and controlled medications, managing acute and chronic illnesses, providing emergency phone coverage on days when not physically present at the Embassy, and coordinating patient care with the Embassy’s Registered Nurse, Regional Medical Officer, and other MED personnel. All patient encounters must be documented in a separate medical record maintained by the contractor, with copies provided to the Embassy’s Health Unit for inclusion in the official MED record; direct documentation into MED systems is prohibited unless explicitly authorized. The contractor must ensure all personnel are fluent in English and Estonian, licensed to practice medicine in Estonia, and possess access to local health databases. The contractor is responsible for complying with Estonian laws, obtaining all required local licenses and permits, and maintaining strict security protocols, including receiving, securing, and accounting for all Embassy keys without duplication without prior approval. Personnel must verbally identify as non-federal employees and include disclaimers in email signatures, and may not use the Department of State logo. Background investigations are required for all staff, with an estimated processing time of 30 to 60 days, and submissions must include completed OF-174 forms. All documentation, reports, and materials generated under this contract become the exclusive property of the U.S. Government and must be delivered upon completion or termination. The contractor must indemnify the U.S. Government against any claims of patent, trademark, or copyright infringement. Invoicing must be submitted electronically to TallinnInvoices@state.gov, with electronic funds transfer required for payment, and all proposals must be submitted by the deadline via email in PDF, DOCX, or XLSX formats, not exceeding 30 MB per file. The contractor must maintain a satisfactory record of integrity, possess adequate financial resources and operational capacity, and be registered in SAM with a valid UEI; evaluation for award will be based on the most advantageous offer, considering both price and non-price factors.
US Embassy Tallinn

POSTED

4 months ago

CLOSED

2 months ago
View Details

Win Contracts in HMO Medical Centers

Get AI-powered intelligence on NAICS 621491 procurement

Real-time contract opportunities for NAICS 621491 (HMO Medical Centers)

AI-powered matching based on your business capabilities and past performance

Competitive analysis of contractors winning awards in this industry

Automated alerts when new opportunities are posted

Miguel
Hillary
Keith Deutsch
Christine

Join 650+ contractors already using CLEATUS