NAICS 621420: Outpatient Mental Health and Substance Abuse Centers
NAICS 621420 – Outpatient Mental Health and Substance Abuse Centers encompasses the provision of ambulatory behavioral health services, including individual and group psychotherapy, crisis intervention, substance use disorder counseling, psychiatric evaluation, and co-occurring disorder treatment delivered in non-residential settings. These services are critical to federal health and human service missions, supporting veterans, active-duty personnel, federal employees, and beneficiaries of the Indian Health Service and Medicaid programs.
Industry Spending Overview
Federal obligations, top contractors and agencies, and related industry codes for NAICS 621420.
AI Industry Description
NAICS 621420 – Outpatient Mental Health and Substance Abuse Centers encompasses the provision of ambulatory behavioral health services, including individual and group psychotherapy, crisis intervention, substance use disorder counseling, psychiatric evaluation, and co-occurring disorder treatment de...
NAICS 621420 – Outpatient Mental Health and Substance Abuse Centers encompasses the provision of ambulatory behavioral health services, including individual and group psychotherapy, crisis intervention, substance use disorder counseling, psychiatric evaluation, and co-occurring disorder treatment delivered in non-residential settings. These services are critical to federal health and human service missions, supporting veterans, active-duty personnel, federal employees, and beneficiaries of the Indian Health Service and Medicaid programs. The sector operates within a complex regulatory framework governed by SAMHSA guidelines, HIPAA compliance, and accreditation standards such as CARF or JCAHO. Contractors in this space must demonstrate clinical expertise, workforce credentialing, and interoperability with electronic health record systems to meet federal contracting requirements. No contractor data is available to identify leading primes or small businesses operating in this sector. However, typical participants include community mental health centers, nonprofit behavioral health networks, and specialized clinical service providers with experience in federal grant-funded programs. No agency data is available to specify primary buyers. Nonetheless, demand is likely driven by the Department of Veterans Affairs, the Substance Abuse and Mental Health Services Administration, the Department of Health and Human Services, and the Department of Defense through its Military Health System and TRICARE network, all of which prioritize accessible, evidence-based outpatient behavioral health care. The competitive landscape is characterized by high regulatory barriers and a reliance on skilled clinical staff, creating opportunities for specialized providers with proven track records in federal compliance and telehealth delivery. Growing emphasis on integrated care models and workforce expansion in underserved areas suggests increasing procurement activity in rural and veteran-focused regions.
Small business size standard
The SBA threshold that decides who can bid NAICS 621420 work as a small business.
The SBA cap for this NAICS (13 CFR 121.201). A business at or under it can self-certify as small for work in this code, which is what makes it eligible for a small-business set-aside. The cap is set per NAICS, so the same company can be small in one code and not in another.
13 CFR 121.201, effective January 1, 2026. The SBA revises the table roughly once a year.
Key metrics
Federal obligations and activity under NAICS 621420, last 12 months.
Total Obligations
$17.3M
Last 12 months
Average Award Size
$60K
Per awarded contract
Opportunities Posted
1,100
Last 12 months
Active Contracts
153
Currently open
Awarded Contracts
287
Last 12 months
Awards Expiring
163
End date within 12 months
Contractors Awarded
73
Last 12 months
YoY Growth
-57.8%
vs. prior 12 months
Top contractors
Companies with the highest total award value under NAICS 621420, ranked by dollars won.
Top agencies
Federal agencies directing the most contract spending toward NAICS 621420.
| Department Of Justice | $10.4M | |
| Department Of Health And Human Services | $5.1M | |
| Court Services And Offender Supervision Agency | $1.0M | |
| Department Of Veterans Affairs | $808K | |
| Top 4 combined | $17.3M | 287 |
Competition
How many companies historically bid on federal awards in NAICS 621420, from bidder counts reported on USAspending.
Half or more of reported awards drew exactly one bidder, usually a sign of incumbent-held work rather than an open field. · 6,104 reported awards
Median Bidders
1
Per reported award, all-time
Single-Bid Awards
61%
Share of reported awards with one bidder
10+ Bidder Awards
2%
Share of reported awards with 10+ bidders
Reported Awards
6,104
68% of 8,987 total awards
Share of reported awards in each bidder-count bracket per federal fiscal year.
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 Family | Competition | Median Bidders | Single-Bid | Bidder Mix | Reported Awards |
|---|---|---|---|---|---|
621420This Code Outpatient Mental Health and Substance Abuse Centers | Usually Single-Bid | 1 | 61% | 6,10468% of 8,987 | |
62142NAICS Industry | Usually Single-Bid | 1 | 61% | 6,10468% of 8,987 | |
6214Industry Group Outpatient Care Centers | Usually Single-Bid | 1 | 52% | 29,71983% of 35,710 | |
621Subsector | Usually Single-Bid | 1 | 65% | 306,93284% of 364,468 | |
62Sector Health Care and Social Assistance | Usually Single-Bid | 1 | 71% | 552,42684% of 660,779 |
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.
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