Do you need an MSO for your ABA practice in Delaware?

Delaware's corporate-practice doctrine

No search was run for a Delaware corporate practice of medicine or psychology doctrine, so this guide cannot say whether Delaware recognizes one. The Professional Service Corporation Act shows only that a professional service is one requiring a license that, "by reason of law, prior to June 7, 1969, could not be performed by a corporation" (8 Del. C. Chapter 6). That is a definition in the entity statute, not a statement of current doctrine.

Is ABA a licensed profession in Delaware

No. Delaware does not license behavior analysts. The Title 24, Chapter 30 board covers marriage and family therapists, professional counselors, chemical dependency professionals, art therapists and the board itself, and no behavior analyst subchapter appears. No behavior analyst licensure bill was found in the 153rd General Assembly (24 Del. C. Chapter 30; licensing research). Without a license there is no licensure transition and no practice act ownership rule to apply.

Professional-entity rules and the form of the clinical entity

A Delaware professional corporation "has as its shareholders only individuals who themselves are duly licensed or otherwise legally authorized within this State to render the same professional service," may issue stock only to such individuals, and bars voting trusts or proxies to anyone other than a licensed shareholder. It may render professional services only through licensed officers, employees and agents, though clerks, administrators, technicians and other assistants not ordinarily considered to be rendering professional services are not counted as such. If all shareholders cease to be licensed, the corporation is treated as converted into an ordinary business corporation (8 Del. C. Chapter 6). Delaware's LLC Act provisions on professional services were not read.

Who is allowed to own the clinical entity

Not determined. The Act applies to services that require a license, and Delaware requires none for behavior analysis, which points toward open ownership of an ABA entity. No source read says so directly, and the LLC Act was not read. Confirm with counsel before relying on that reading, and note that the answer changes the moment a licensed profession joins the clinical chain.

Where the strict rules catch you: in-house diagnostics

The two archetypes split sharply. An ABA-only practice sits outside the licensed-service rules because ABA is unlicensed. A practice with in-house diagnostics adds a licensed profession: doctors of medicine and osteopathy are named professional services under the Act, and medicine and podiatry may be combined in one corporation. Psychologists are not named in the Act's example list, and whether psychologists (24 Del. C. Chapter 35) may or must use a professional corporation was not read (8 Del. C. Chapter 6). Place any physician or psychologist service in its own licensee-owned entity.

What a management services organization actually is

An MSO is a separate company that provides the non-clinical side of a practice to a clinical entity it does not own. The clinical entity employs the clinicians and delivers care. The MSO runs the business. A management services agreement ties them together, and the clinical entity pays the MSO a fee. In many states the MSO exists to solve an ownership problem, because non-licensees cannot own the clinical entity. Whether Delaware presents that problem for a pure ABA practice depends on the points above, and this guide says which of them could be verified.

When an MSO helps in Delaware

If ABA ownership is open, an MSO is a scale and exit tool, useful for several entities on one platform, a sale, or separating an in-house diagnostics entity. If counsel concludes otherwise, an MSO becomes the way to bring in non-licensee capital. See the practice expansion and sale hub.

Transaction notice and private equity review

Search results said a 2026 Delaware law, SB 313, sets a moratorium on for-profit or private equity control of nonprofit acute care hospitals and describes advance notice to the Attorney General for certain nonprofit conversions. Both official pages failed, so nothing is quoted. As described, it targets acute care hospitals, and nothing seen suggests it reaches ABA practices. That is not confirmed.

How Delaware would evaluate your arrangement

These are the factors to run, based on what this guide could verify.

Fee-splitting and how to pay an MSO

No Delaware fee-splitting source was searched for this guide. Whatever a state's own rules say, the safe design for a management fee is a fixed or cost-plus amount set to fair market value and traceable to documented services, not a percentage of clinical revenue tied to patient volume. Where the practice bills Medicaid, the federal anti-kickback statute applies to payments that can be linked to referrals or volume (42 U.S.C. § 1320a-7b(b)).

Keeping clinical control clean

No Delaware control rule for ABA was found. Keep clinical decisions with the licensed clinicians and document the management relationship at arm's length. The management company should not hire, supervise, or discipline clinicians on clinical grounds, set treatment hours, or override a treatment plan. That discipline protects the clinical entity in a payor audit or a transaction, and it becomes essential the moment a psychologist or physician joins the clinical chain.

Medicaid ownership disclosure and change of ownership

The Delaware Medicaid ownership disclosure and change-of-ownership rules were not searched for this guide. Federal rules require ownership and control disclosure at enrollment (42 C.F.R. Part 455, Subpart B).

How this connects to the rest of your compliance stack

Ownership rules are one layer. Three others still bind:

• Payor and Medicaid disclosure. Your real ownership stack, including any MSO, is disclosed at enrollment and revalidation regardless of how it looks on paper (42 C.F.R. Part 455). See the Medicaid and insurance hub.
• Licensing. The credential each analyst must hold is a separate analysis. See Delaware licensing and credentialing.
• Entity structure. Choosing direct ownership versus an MSO-plus-entity structure is its own analysis. See entity structures in Delaware, and the facility licensure and HIPAA hub for what a change of ownership does to facility and records obligations.

Setting it up in Delaware: the sequence

1. Confirm ownership is open for ABA. Have counsel read the LLC Act and confirm that an unlicensed service may be owned by a non-licensee.
2. Credential the practitioners. Confirm BACB certification, since there is no state license.
3. Separate any second profession. Place physician or psychologist services in a licensee-owned professional entity.
4. Price the management fee at fair market value. Fixed or cost-plus, documented, and compliant with the federal anti-kickback statute.
5. Plan the Medicaid disclosure. Prepare the full ownership stack for enrollment.

What this guide could not verify

• Whether Delaware recognizes a corporate practice of medicine or psychology doctrine; no search was run.
• Whether an ABA practice is a professional service under 8 Del. C. Chapter 6, and the LLC Act provisions on professional services.
• Whether psychologists may or must use a professional corporation.
• Fee-splitting rules.
• The text of SB 313 (2026) and any transaction notice law.
• Delaware Medicaid ownership disclosure and change-of-ownership rules.

Delaware MSO variables at a glance

Frequently asked questions