Offices of Mental Health Practitioners (except Physicians)

U.S. industry-level primer — NAICS 2022 code 62133

NAICS = North American Industry Classification System, the standard code set U.S. statistical agencies use to classify businesses by activity. The five-digit code (62133) is the "industry" level; the six-digit code beneath it (621330) is the "national industry" level.

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1. Overview

NAICS 62133 covers the business of outpatient talk therapy and counseling delivered by licensed clinicians who are not medical doctors — psychologists, clinical social workers, marriage and family therapists, and licensed professional/mental health counselors. Think of the local therapist's office, the group counseling practice, and the video-therapy visit on your laptop. It excludes psychiatrists, who hold a medical degree and are counted elsewhere.[1]

This five-digit industry contains exactly one six-digit child, 621330, so the two levels are effectively identical — same scope, same firms, same numbers. This page gives the level's own ground-truth federal statistics and a short orientation. For the full detail — structure, economics, named companies, demand, regulation, consolidation, risks, and how to invest — read the child primer, 621330.

The one fact worth carrying into any deeper reading: this is a fragmented, labor-intensive service industry where demand persistently outruns the supply of licensed clinicians, whether you approach it as a public-market or a private investor.

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

NAICS is a nested hierarchy. Most five-digit industries split into several six-digit national industries; this one does not. 62133 has a single child, 621330, also titled Offices of Mental Health Practitioners (except Physicians). When a five-digit industry has only one six-digit child, the two are one and the same — every establishment, dollar of revenue, and employee counted at 62133 is counted at 621330, and vice versa. There is no aggregation across siblings to do here, because there are no siblings.

That means this page is deliberately short. The economics, competitive structure, and investable landscape are all properties of 621330; repeating them here would just duplicate the child primer. See 621330 for:

• the scope test and what the code excludes (psychiatrists, outpatient facilities, hospitals);
• the three ownership archetypes — solo/small practices, multi-site platforms, and therapist marketplaces;
• the friendly-PC / management-services-organization (MSO) structure that lets outside capital participate around Corporate Practice of Medicine (CPOM) rules;
• named public and private operators, unit economics, demand drivers, regulation, and the roll-up story.

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

Because 62133 equals its one child, the level's totals are the 621330 totals. Our ground-truth federal figures mix reference years: revenue, firm counts, and concentration come from the 2022 Economic Census, while establishment, employment, and payroll counts come from 2023 County Business Patterns (CBP). These are different vintages and should not be read as one set of financial statements.[2]

(CBP = County Business Patterns. CR4/CR8/CR20/CR50 are the combined revenue shares of the largest 4, 8, 20, and 50 firms. The HHI is a standard concentration gauge running from near 0 up to 10,000; at 6.6 this industry sits essentially at the floor — it is one of the least-concentrated industries in the economy.)

The undercount — read this before using the numbers. These figures capture only employer establishments — businesses with payroll. Two large slices of real activity sit outside them:

• Solo self-employed therapists are largely invisible here. A large share of clinicians practice alone as no-payroll ("nonemployer") sole proprietors or as independent contractors billing through insurance marketplaces. Our ground-truth dataset contains no nonemployer figure for this level, so we state none — but because most therapists practice solo, the true number of practicing clinicians and "offices" is materially higher than 276,277 employees and 46,513 establishments imply.[3][4]
• Many mental-health clinicians are classified in other industries — those employed by hospitals, outpatient facilities, schools, government, and family-services agencies are counted under those industries, not here.

So treat $23.3 billion as the revenue of the employer-firm slice of outpatient non-physician therapy offices, not the whole of what Americans spend on this care. Our extract does not provide industry-wide visit volume, payer mix, or margins, so none are invented here.

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4. Investable universe (where value concentrates)

With a single child, all of the level's investable value sits in 621330, and it is overwhelmingly private and fragmented: roughly 39,000 firms, none holding meaningful share, plus a very large tail of solo self-employed therapists.[2] Public-market purity is thin — essentially one sizeable listed pure-play (LifeStance Health, ticker LFST) and one virtual-first name being acquired (Talkspace, TALK), with broader behavioral-health operators and insurers giving only partial exposure. Most capital actually enters through private-equity roll-ups, insurer-owned platforms (e.g., UnitedHealth's Optum owns Refresh Mental Health), and venture-backed therapist-marketplace companies (Headway, Alma, Grow Therapy, SonderMind, Rula). The full company-by-company map, with tickers and relevance, is in 621330, Section 4.

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5. How the money works

A therapy office earns revenue = number of clinicians × completed visits per clinician × collected revenue per visit, and its cost structure is dominated by clinician pay (commonly 60–70% of the fee). This is not capital-intensive in the manufacturing sense — the binding input is clinician time, not equipment. Platform economics are thin: even at the scaled listed leader, clinic-level "center margin" running about a third of revenue falls to roughly low-double-digit company-wide operating margin after overhead.[12] Solo practitioners run simpler, capital-light economics capped by their own billable hours; marketplaces monetize exactly that constraint by taking a per-session cut for handling insurance and filling the calendar. Full mechanics, payer mix, and the levers owners pull are in 621330, Section 5.

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6. Demand drivers

Demand is structurally strong and under-met, and it is the same for the level as for its child: about 122 million Americans live in federally designated mental-health-professional shortage areas, and only about half of adults with any mental illness receive treatment.[5][15] Falling stigma, coverage expansion and parity rules, telehealth normalization, employer mental-health benefits, and an aging, growing population all push demand up — while the supply of licensed clinicians is the ceiling. The Bureau of Labor Statistics projects mental-health-counselor employment up 17% and marriage-and-family-therapist employment up 13% from 2024 to 2034, several times the all-occupation average, and federal workforce projections still show shortages for years.[6][7] See 621330, Section 6 for the full picture.

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7. Regulation

The regulatory frame is identical at both levels: state-by-state clinician licensure (the main brake on workforce supply), interstate telehealth compacts (PSYPACT for psychologists, plus the Counseling and Social Work Compacts), Medicare/Medicaid billing rules set by the Centers for Medicare & Medicaid Services (CMS), federal Mental Health Parity (MHPAEA) requirements, HIPAA and 42 CFR Part 2 privacy rules, and the Corporate Practice of Medicine (CPOM) doctrine that shapes how outside capital can legally own these practices.[8][9][10][11] Details and recent changes are in 621330, Section 7.

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8. Consolidation

The concentration data tell the story bluntly: the four largest firms hold just 3.6% of revenue, the top 50 only 14.3%, and the HHI is 6.6 — essentially the floor.[2] This is a cottage industry of small practices. It has drawn a wave of private-equity roll-up capital (industry trackers estimate well over $20 billion deployed into behavioral health across 2018–2025) alongside a capital-light marketplace alternative and insurer vertical integration — but even the biggest players hold low-single-digit share, and federal antitrust and health agencies have opened a cross-government inquiry into corporate/PE ownership of behavioral-health providers.[13][13] The full consolidation narrative is in 621330, Section 8.

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9. Risks

The level inherits its child's risk profile: clinician labor is both the bottleneck and the largest cost; reimbursement pressure and payer concentration squeeze revenue per visit; regulatory shifts (Medicare rates, parity enforcement, telehealth-prescribing rules) can move economics; platform margins are thin, leaving little cushion for integration missteps; ownership scrutiny of PE/MSO structures is rising; and broad behavioral-health company results often fold in inpatient, physician, or payer businesses that are not this industry, complicating sizing.[12][13] See 621330, Section 9 for the complete list.

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10. How to invest & outlook

Because the level equals its one child, the routes are 621330's routes. Public-market exposure is narrow: LifeStance Health (LFST) is the cleanest listed pure-play; Talkspace (TALK) is being acquired by Universal Health Services (UHS); Acadia Healthcare (ACHC) and UHS give broader, higher-acuity, facility-weighted exposure; and UnitedHealth Group (UNH) is an indirect payer proxy via Optum/Refresh. Private routes — where most capital actually goes — run through direct practice ownership, regional roll-ups and PE platforms, MSOs, and provider-enablement/marketplace companies.

Outlook. The demand backdrop is as favorable as any in health services — rising prevalence, expanding coverage, durable telehealth, falling stigma — and it is structurally supply-constrained, which supports pricing for operators who can staff. But this is a low-margin, labor-bound business where winners are decided by two unglamorous capabilities: recruiting and keeping clinicians, and negotiating payer economics at scale. Expect continued but disciplined consolidation and a market that stays deeply fragmented for years. Valuations, tickers, and the detailed investment checklist are in 621330, Section 10.

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Sources

Ground-truth statistics for NAICS 62133 in Section 3 are from our ingested federal extract (stats-62133.md), drawn from the U.S. Census Bureau's 2022 Economic Census (receipts, firms, concentration) and 2023 County Business Patterns (establishments, employment, payroll). All other numbered citations point to the sources compiled in the child primer, 621330, which this rollup synthesizes. The key references cited above are:

1. U.S. Census Bureau, "2022 NAICS — 621330, Offices of Mental Health Practitioners (except Physicians)" (definition and exclusions). https://www.census.gov/naics/?input=621330&year=2022
2. U.S. Census Bureau, 2022 Economic Census — Concentration, and 2023 County Business Patterns, for NAICS 621330; figures from the supplied ground-truth extract.
3. U.S. Census Bureau, "County Business Patterns: Coverage and Methodology," 2025.
4. U.S. Census Bureau, "Nonemployer Statistics" (no-payroll businesses, tracked separately), 2025.
5. Substance Abuse and Mental Health Services Administration, "2024 National Survey on Drug Use and Health: Annual National Report," 2025.
6. Health Resources and Services Administration, "Health Workforce Projections" (behavioral-health shortages through 2038), 2025.
7. U.S. Bureau of Labor Statistics, Occupational Outlook Handbook — mental-health counselors (+17%, 2024–34) and marriage-and-family therapists (+13%), 2025.
8. Centers for Medicare & Medicaid Services, "Marriage and Family Therapists & Mental Health Counselors" (2024 Medicare billing eligibility).
9. U.S. Department of Health and Human Services, telehealth.hhs.gov — Medicare payment policies and behavioral-health licensure, 2025–2026.
10. U.S. Department of Health and Human Services, "Privacy Laws and Policy Guidance for Telehealth" (HIPAA), 2024.
11. U.S. Department of Labor, "Statement Regarding Enforcement of the 2024 MHPAEA Final Rule," May 2025.
12. LifeStance Health Group, Form 10-K and Q4/Full-Year 2025 results, filed 2026.
13. Federal Trade Commission, Department of Justice, and Department of Health and Human Services, "Cross-Government Inquiry on Corporate/Private-Equity Ownership in Health Care," 2024.
14. Capstone Partners, "Behavioral Healthcare Services Market Update," 2025.
15. Health Resources and Services Administration, Mental Health Health Professional Shortage Areas (HPSA) designations.

Full source list with URLs: see 621330 Sources.