The five rows below carry the operative statutory language verbatim, each quote pulled from the official code. This page is one state from the full state-by-state reference. Nothing here is legal, tax, or financial advice.
The five-part test in brief
Whether an ABA practice needs a professional entity is a stack of five questions. The licensing act is the gateway, because an unlicensed profession is generally not a professional service and an ordinary entity governs. The professional-entity statute supplies the form and the ownership rule that applies if that form is used. The scope definition decides whether ABA is actually inside that statute. The corporate-practice doctrine, a separate body of law that often lives in the medical practice act or case law rather than the entity statute, is usually what forces licensed ownership and pushes outside capital into a management company. And the fee-splitting and anti-remuneration rules constrain management-fee economics even where ownership is open. The rows below run those five against this state's actual code, quoting the operative language so the position rests on the statute.
Massachusetts, provision by provision
Massachusetts
Nuanced: not enumerated in the professional-corporation statute; catch-all language unresolvedHolding: ownership of a Massachusetts ABA-only practice is generally open, since behavior analysis is not among the enumerated professions in the Professional Corporation Law. A broader catch-all clause could in principle reach ABA as a service "rendered only pursuant to a license," but this has not been tested for behavior analysis specifically.
Yes. Massachusetts licenses Applied Behavior Analysts and Assistant Applied Behavior Analysts under M.G.L. c. 112, Section 165, administered by the Board of Registration of Allied Mental Health and Human Services Professions, effective under the Board's implementing regulation, 262 CMR 10.00, since June 5, 2015.
Conclusion. ABA is a licensed profession in Massachusetts, the gateway for the entity questions below, though its interaction with the state's professional-corporation statute is genuinely unresolved, as the next axis shows.
Massachusetts's Professional Corporation Law, M.G.L. c. 156A, and its implementing regulation, 950 CMR 105.00, define "professional service" by listing specific licensed professions under M.G.L. c. 112, physicians and surgeons, chiropractors, podiatrists, engineers, electrologists, physical therapists, psychologists, certified public accountants, dentists, veterinarians, optometrists, and acupuncturists, plus attorneys under a separate chapter, followed by broader language reaching "any other type of service which may be rendered only pursuant to a license." Behavior analysis is not named in the enumerated list. Where a professional corporation is used, shareholders must be individuals licensed to perform the relevant professional service.
Conclusion. No professional entity is clearly required for ABA, since behavior analysis is not among the enumerated professions, but the catch-all clause for services "rendered only pursuant to a license" creates a live interpretive question rather than a closed one.
This is the genuinely unresolved axis. Massachusetts licenses ABA under M.G.L. c. 112 the same statutory title that the enumerated professional-service definition draws its named professions from, which arguably supports reading the catch-all clause to include ABA. But no amendment has added "behavior analyst" or "applied behavior analyst" to the enumerated list itself, and no identified case law or regulatory guidance confirms the catch-all clause has been applied to ABA specifically.
Conclusion. The scope link is ambiguous rather than settled in either direction; operators should not assume Chapter 156A definitively excludes or definitively includes ABA without direct confirmation.
Ownership. No ownership-by-law rule clearly restricts who may hold equity in a Massachusetts ABA-only practice. M.G.L. c. 112, Sections 163 to 172 regulate individual licensure and practice, not business-entity ownership, and Massachusetts has not extended a corporate-practice-of-medicine doctrine to reach behavior analysis by name. In practice, this leaves ABA-only entities in Massachusetts able to organize as a standard LLC or corporation, since nothing forces the professional-corporation form onto a profession the statute does not name.
Clinical control. Because ownership is not clearly restricted at the entity level, clinical control rests with the licensed individuals under their own supervisory and disciplinary obligations to the Board, not with an entity-level ownership rule.
Conclusion. A non-licensee likely may hold equity in a standard Massachusetts LLC or corporation delivering ABA-only services, though the unresolved scope question on axis three means this conclusion carries somewhat more uncertainty than a state with an explicit statutory answer either way.
The Board of Registration of Allied Mental Health and Human Services Professions maintains professional-conduct rules under 262 CMR that reach its licensed professions, including improper financial arrangements, alongside the Board's general disciplinary authority. Separately, Massachusetts's Health Policy Commission conducts material-change notice and cost and market impact reviews under 958 CMR 7.00 for larger transactions among providers and provider organizations, a transaction-disclosure and review regime rather than an ownership or fee-splitting bar. Any ABA practice billing MassHealth or commercial insurers remains fully subject to the federal Anti-Kickback Statute and Stark rules regardless.
Conclusion. A management agreement should be priced at fair market value to satisfy the federal anti-kickback framework and the Board's professional-conduct standards; a larger Massachusetts transaction may separately trigger a 958 CMR 7.00 material-change notice to the Health Policy Commission, a disclosure obligation distinct from the ownership question itself.
ABA is a licensed profession in Massachusetts under M.G.L. c. 112, Section 165 (axis one), but the Professional Corporation Law's enumerated definition of "professional service" does not name behavior analysis, leaving a genuine, unresolved question about whether the statute's broader catch-all language reaches ABA (axes two and three). No corporate-practice doctrine independently restricts ownership, so the practical result is open ownership, tempered by the interpretive uncertainty on axis three (axis four). Board professional-conduct rules and, for larger deals, the Health Policy Commission's material-change review regime constrain the money and transaction side without resolving the entity-form question (axis five). Therefore Massachusetts is a nuanced state: ownership functions as open in practice, but the statutory basis for that openness is less airtight than in a state where ABA is affirmatively excluded from the professional-entity statute by name.
Outlook: how this verdict could change
Likelihood of change: Moderate. The unresolved scope question on axis three is exactly the kind of ambiguity that tends to get settled either by a legislative amendment adding ABA to the enumerated list, or by regulatory guidance or a court decision interpreting the existing catch-all clause; neither is currently pending, but the ambiguity itself makes this a state worth re-checking periodically.
What to watch. Any amendment to 950 CMR 105.02's enumerated professional-service list, any Division of Professional Licensure guidance addressing behavior analysts specifically under Chapter 156A, and continued Health Policy Commission activity under 958 CMR 7.00 involving ABA transactions.
Disruption if it changes: Moderate. A regulatory or legislative clarification adding ABA to the enumerated list would resolve the current ambiguity by pulling ABA into the mandatory professional-corporation framework, a real but bounded change rather than a full restructuring of the market.
Where professional advice is essential, not optional
Verbatim statutory text is a starting point, not a conclusion. Statutes are amended, agencies issue rules that fill them in, and courts interpret them. Massachusetts's unresolved scope question is the sharpest trap here: treating the absence of ABA from the enumerated list as a definitive answer, in either direction, overstates the certainty the statute actually provides. Use this page to locate the operative provisions and to speak from the source, then confirm the current text and citations against the official code and engage qualified Massachusetts counsel before acting. Nothing here is legal, tax, or financial advice.
The provisions quoted here change and are interpreted by agencies and courts, and Massachusetts's professional-corporation scope question for ABA is genuinely unresolved rather than settled. The official Massachusetts code and qualified Massachusetts counsel are the authoritative sources. Neither this page nor any secondary source should be relied on in place of direct verification and professional advice.