Outpatient Mental Health and Substance Abuse Centers (U.S.)

NAICS 2022 code 62142 — an investor's primer (industry rollup)

Short page, pass-through level. NAICS, the North American Industry Classification System, the federal scheme for sorting businesses, is a nested hierarchy. This five-digit industry, 62142, contains a single six-digit national industry, 621420, of the same name. At this level the two are effectively identical: every establishment, dollar and worker counted under 62142 is the same one counted under 621420. This page gives the rollup figures and the essentials; for full detail, the investable universe, unit economics, regulation, consolidation and risks, see the 621420 primer.

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1. Overview

62142 is the network of clinics and centers that treat mental illness and addiction without an overnight stay: community mental-health and counseling centers, group therapy and psychiatry clinics, methadone and buprenorphine ("opioid treatment") programs, and fast-growing tele-therapy platforms. As a distinct slice of health care it is a professional-services business, revenue is visits times reimbursement, and the scarce input is licensed clinicians, not hard assets or consumer brands.

Because the five-digit industry has exactly one six-digit child, there is nothing to aggregate: 62142 equals 621420. The distinction is purely a level in the classification tree, kept here so the taxonomy is complete.

Why it matters to an investor: demand is large, under-served and structurally growing (about 61.5 million U.S. adults had a mental illness in 2024, and only around half received treatment) [6], while payment is shifting toward parity with physical health [7]. It is also one of the most fragmented corners of health care, the four largest firms hold under 4% of revenue [2], which has made it a magnet for roll-ups and, lately, for regulatory scrutiny of those roll-ups.

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2. What's inside — and why this level equals its one child

The 2022 NAICS structure places a single national industry under 62142:

Because there is no second child to combine, the rollup adds nothing to the leaf: the same four business types make up both levels, (1) community mental-health and counseling centers; (2) outpatient substance-use / opioid treatment programs (OTPs), the methadone and medication-assisted-treatment clinics; (3) multi-site for-profit psychiatry/therapy groups blending in-person and virtual care; and (4) virtual behavioral-health platforms billed to insurance [3]. The 621420 primer covers each in full.

What sits just outside (and why federal counts here understate the broader "mental-health economy"): solo psychiatrists fall under NAICS 621112, and independent psychologists, social workers and licensed counselors under NAICS 621330, and much U.S. outpatient therapy is delivered by those independent practitioners. Inpatient psychiatric/substance hospitals (622210) and residential rehab (623220) are separate again [3]. So 62142 captures only the "center/clinic" slice of outpatient behavioral health.

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3. How big it is (this level's rollup)

Ground-truth U.S. federal statistics for NAICS 62142, identical to 621420, as expected for a single-child level:

The Herfindahl-Hirschman Index is a standard concentration gauge; 9.2 against a 10,000 maximum is among the lowest in all of health care. Derived from the figures above: roughly 1.7 establishments per firm and about 19 employees per establishment; mixing vintages (2022 receipts against 2023 counts) implies on the order of $1.8 million of revenue per establishment, with payroll near 57% of receipts, a labor-intensive, small-business-heavy industry. Under the U.S. Small Business Administration (SBA) size standard for this industry, $19 million in annual receipts, nearly every operator qualifies as a small business [5].

Read these as two snapshots, not one income statement, receipts are 2022, employment and payroll 2023.

Undercount caveats (important):

• CBP excludes the self-employed and most government employees; the Economic Census generally excludes government-owned establishments and nonemployer (no-payroll) businesses [4]. Government-run county and state clinics, a large share of actual public mental-health delivery, are largely captured under government accounts, not here, so the true public footprint of outpatient behavioral care is bigger than $30.6 billion suggests. And because ownership skews toward small, often individually owned or nonprofit operators, the payroll-based counts miss the long tail.
• Because solo psychiatrists (621112) and independent therapists (621330) sit in adjacent codes [3], broader "behavioral-health market" estimates that run to $140 billion-plus fold in those codes plus inpatient and residential care and are not comparable to 62142.
• Our ground-truth file for 62142 supplies no patient volume, profit, payer mix or government-provider totals, so those are not inferred here.

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4. Investable universe — where value concentrates

Because 62142 is its one child, value concentrates exactly where it does in 621420: mostly in private hands, with a few imperfect public proxies. Tickers and figures are covered in full in the child primer; in brief:

• Public (few, imperfect): outpatient pure-play LifeStance Health (LFST) is the cleanest listed proxy for the insurance-billed outpatient model; Acadia Healthcare (ACHC) and Universal Health Services (UHS) add diversified behavioral exposure weighted to inpatient/residential; virtual-therapy platform Talkspace (TALK) is being taken private by UHS. There is no dedicated exchange-traded fund [10][9][11].
• Private (dominant): private-equity-backed clinic and addiction chains (e.g., BayMark, the largest U.S. opioid-treatment operator, 400+ facilities [12]), nonprofit and county providers, and venture-funded digital marketplaces (Headway, Grow Therapy, Rula, Talkiatry) that credential independent clinicians into insurance networks [13].

To own the outpatient mental-health theme in public markets, LFST is the pure-play and ACHC/UHS the diversified routes; to own the addiction-treatment or digital-marketplace theme, you are largely in private markets. See 621420 for the full roster and figures.

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5. How the money works

Revenue = completed visits (or treatment episodes) × net reimbursement per service, earned across a payer mix of commercial insurers, Medicaid, Medicare, self-pay, employer contracts and government grants, against a cost base dominated by clinician pay. The levers, in brief: payer mix is destiny (Medicaid is the single largest payer of behavioral health, and pays least per visit while commercial pays most); clinician productivity and retention cap output in a country where roughly 157 million people live in a mental-health workforce-shortage area [7]; clinic contribution margin after clinician comp and facility cost is the key unit number; and OTP clinics run a distinct recurring, daily-dosing model. The full mechanics, watch-list metrics, marketplace economics, are in the 621420 primer.

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6. Demand drivers

• Prevalence and the treatment gap. In 2024 about 61.5 million adults (23.4%) had any mental illness, while only about half received treatment, the untreated majority is the structural growth runway [6].
• The overdose/opioid epidemic sustains demand for medication-assisted treatment and OTP services.
• Workforce shortage sets the cap. Growth is often gated by hiring, not need: HRSA (Health Resources and Services Administration) listed thousands of mental-health shortage areas covering some 157 million people [7].
• Coverage, parity and telehealth normalization push more care into billable, insured settings and lower the friction of a first appointment [7].

Net: demand is large, recession-resistant (behavioral-health need does not fall in downturns) and supply-constrained, attractive, but tempered by heavy reliance on government payers.

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7. Regulation

A heavily licensure-gated industry. The main layers: state facility, clinician and telehealth licensing; Medicaid/Medicare and commercial payer enrollment; federal mental-health parity (the Mental Health Parity and Addiction Equity Act, MHPAEA) [7]; privacy rules (HIPAA, the Health Insurance Portability and Accountability Act, plus the stricter 42 CFR Part 2 for substance-use records); OTP certification under 42 CFR Part 8 with Drug Enforcement Administration (DEA) registration; the recurring "telehealth cliff" on controlled-substance tele-prescribing; the Certified Community Behavioral Health Clinic (CCBHC) funding model; corporate-practice-of-medicine rules that push private-equity ownership into management-services structures; and fraud-and-abuse enforcement (the False Claims Act and Anti-Kickback Statute). Specifics, dates and citations are in the 621420 primer.

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8. Consolidation

The defining feature is extreme fragmentation, a CR4 of 3.8% and an HHI of 9.2 [2], among the lowest in health care, yet competition is local and payer-specific. That gap between a national field of ~9,600 firms and a handful of scaled operators is exactly what has drawn roll-ups: private equity and public operators buying solo practices and OTPs to build regional scale. Peer-reviewed work found private-equity-backed deals were the majority of behavioral-health acquisition activity studied over 2010–2021 [13]. Countervailing forces now include payer–provider convergence (insurers building or buying provider arms), digital marketplaces as a new distribution layer, and rising government scrutiny of private-equity-owned addiction chains [14]. Full detail, the roll-up playbook, its failure modes, and the shift toward payer-integrated and value-based models, is in the child primer.

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9. Risks

Same risk stack as 621420: reimbursement and Medicaid risk (rate cuts, narrowed networks, prior authorization, budget pressure hit the top line directly); labor risk (a structural clinician shortage caps capacity and drives wage inflation [7]); regulatory/political risk (scrutiny of PE-owned OTPs [14], uncertain parity enforcement, annually renewed telehealth-prescribing flexibilities); billing and False Claims Act exposure; privacy/cyber risk on especially sensitive records; and consolidation/leverage risk in debt-financed roll-ups. Note too a measurement risk specific to using these numbers: federal business statistics omit government-run and nonemployer providers [4], so market-size and share estimates built on 62142 alone understate the real footprint. Demand is defensive; revenue, funded heavily by public budgets, is policy-cyclical rather than economy-cyclical.

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10. How to invest & outlook

Because 62142 is its one child, the how-to-invest picture is 621420's: for a focused public bet on insurance-billed outpatient mental health, LifeStance (LFST) is the pure-play, with Acadia (ACHC) and UHS as diversified routes (UHS adding virtual outpatient via the pending Talkspace deal), and no dedicated ETF, so broad public exposure comes only as a slice of health-care-services funds [8][9][10]. Most of the industry, though, lives in private markets: platform buyouts and add-on practice acquisitions, growth equity, direct lending, health-care real estate, enabling software, and venture stakes in the digital marketplaces [13].

Our outlook: demand fundamentals are unusually durable, high need, constrained clinician supply, and outpatient care that is cheaper and more accessible than inpatient, and the shift toward parity and virtual access is structurally favorable. But the industry is neither recession-proof nor automatically high-margin. The investable question is less "will demand grow" (it will) than "who captures the economics", a contest among clinic roll-ups, payer-owned provider arms and asset-light digital marketplaces, all on thin, labor-constrained margins under a policy-sensitive, Medicaid-heavy revenue base. For the complete analysis, read the 621420 primer.

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Sources

1. U.S. Census Bureau, County Business Patterns (CBP): 2023 — NAICS 621420 establishments, employment, annual and Q1 payroll. https://www.census.gov/data/datasets/2023/econ/cbp/2023-cbp.html
2. U.S. Census Bureau, 2022 Economic Census — Concentration of Largest Firms — NAICS 621420 receipts, firm count, CR4/CR8/CR20/CR50, HHI. https://api.census.gov/data/2022/ecnsize/groups/EC2200SIZECONCEN.html
3. U.S. Census Bureau, 2022 NAICS definition — 621420, Outpatient Mental Health and Substance Abuse Centers (scope and cross-references to 621112, 621330, 622210, 623220; single national industry under 62142). https://www.census.gov/naics/?details=621420&input=621420&year=2022
4. U.S. Census Bureau, CBP Methodology and Understanding NAICS / Economic Census coverage (exclusion of self-employed, government, and nonemployer businesses). https://www.census.gov/programs-surveys/cbp/technical-documentation/methodology.html; https://www.census.gov/programs-surveys/economic-census/year/2022/guidance/understanding-naics.html
5. U.S. Small Business Administration, Table of Size Standards, 2023 — NAICS 621420, $19 million receipts. https://www.sba.gov/document/support-table-size-standards
6. Substance Abuse and Mental Health Services Administration (SAMHSA), 2024 National Survey on Drug Use and Health (NSDUH), 2025 — mental-illness prevalence and treatment gap. https://www.samhsa.gov/newsroom/press-announcements/20250728/samhsa-releases-annual-national-survey-on-drug-use-and-health
7. Health Resources and Services Administration (HRSA), Health Professional Shortage Areas (HPSA) Statistics; and CMS, Mental Health Parity and Addiction Equity Act (MHPAEA) overview. https://data.hrsa.gov/Default/GenerateHPSAQuarterlyReport/; https://www.cms.gov/marketplace/private-health-insurance/mental-health-parity-addiction-equity
8. LifeStance Health, FY2025 results and Form 10-K (FY2025 revenue ~$1.42 bn; 8,040 clinicians; ~9.0 M visits; 550+ centers). https://investor.lifestance.com/news-releases/news-release-details/lifestance-reports-fourth-quarter-and-full-year-2025-results
9. Acadia Healthcare, 2025 Form 10-K and FY2024/Q1 2026 results (277 facilities; 165 Comprehensive Treatment Centers/OTPs in scope). https://www.sec.gov/Archives/edgar/data/1520697/000119312526078266/achc-20251231.htm
10. Universal Health Services, 2025 Form 10-K (346 behavioral-health facilities incl. 119 outpatient) and UHS to Acquire Talkspace announcement. https://www.sec.gov/Archives/edgar/data/352915/000119312526071676/uhs-20251231.htm; https://www.prnewswire.com/news-releases/universal-health-services-inc-to-acquire-talkspace-inc-302708096.html
11. Talkspace, Stockholders Vote to Approve Acquisition by UHS (May 2026; close expected Q3 2026). https://talkspace.gcs-web.com/news-releases/news-release-details/talkspace-stockholders-vote-approve-acquisition-uhs
12. BayMark Health Services, About Us — largest U.S. opioid-treatment provider, 400+ facilities across 35 states. https://baymark.com/about-us/
13. Sacra / Behavioral Health Business / Health Affairs, Digital behavioral-health marketplaces (Headway, Grow, Rula, Talkiatry) and private-equity acquisition activity, 2010–2021. https://sacra.com/c/headway/; https://doi.org/10.1093/haschl/qxae080
14. Behavioral Health Business / U.S. Senate, Private-equity ownership of opioid treatment programs and 2024–25 congressional inquiries. https://bhbusiness.com/2024/03/19/nearly-one-third-of-otps-are-owned-by-private-equity-firms/; https://www.markey.senate.gov/news/press-releases/senators-markey-braun-push-opioid-treatment-programs-for-answers-on-private-equity-investments