Partnership Disputes in South Dakota Medical and Dental Practices: Patient Allocation and Non-Competes

When a multi-partner surgical group in Sioux Falls, an orthodontic clinic in Rapid City, or a rehabilitation practice in Aberdeen fractures over compensation formulas, call schedules, or overhead allocation, the resulting business divorce threatens both clinical continuity and millions of dollars in enterprise equity. Unlike standard commercial businesses, healthcare entities in South Dakota must strictly comply with professional ownership rules under the Medical Corporations Act (S.D. Codified Laws § 47-11-1), the Dental Corporations Act (S.D. Codified Laws § 47-12-1), and the Health Care Corporations Act (S.D. Codified Laws § 47-11F-1), while navigating statutory patient abandonment rules and federal privacy mandates.

Historically, clinical partnerships across Minnehaha County and Pennington County relied on broad restrictive covenants to block departing doctors from opening rival clinics nearby. However, the South Dakota Legislature fundamentally reshaped healthcare business divorces by enacting S.D. Codified Laws § 53-9-11.1 and S.D. Codified Laws § 53-9-11.2, which render post-termination non-compete clauses voidable for licensed healthcare practitioners unless the restriction is tied directly to the bona fide sale of an ownership interest or limited strictly to non-solicitation of existing patients.

Step-by-Step Process for Resolving Healthcare Partnership Disputes in South Dakota

Whether your practice operates in Sioux Falls, Rapid City, Aberdeen, or Brookings, untangling a medical, dental, or physical therapy partnership requires following a disciplined legal and regulatory sequence.

Step 1: Auditing Buy-Sell Agreements and Statutory Non-Compete Carve-Outs

Begin by reviewing the practice's Shareholders Agreement or LLC Operating Agreement to determine whether the departure triggers a mandatory equity redemption or a partnership dissolution. Under S.D. Codified Laws § 53-9-11.2, a general covenant barring a practitioner from practicing medicine, dentistry, or physical therapy after leaving a partnership is voidable for agreements entered into on or after July 1, 2023-unless the departing partner is selling their equity interest under S.D. Codified Laws § 53-9-10.1 (which allows a competition ban of up to 3 years within a specified geographic area upon transfer of an ownership interest) or dissolving a partnership within a municipality under S.D. Codified Laws § 53-9-10.

Step 2: Securing Electronic Health Records (EHR) and Patient Lists Under HIPAA

In South Dakota clinical breakups, neither partner 'owns' the patients themselves, as patients retain an absolute right to choose their provider. However, the Designated Record Set inside the practice's Electronic Health Record (EHR) system is legally owned by the corporate practice entity as the Covered Entity under 45 C.F.R. § 164.502. In Setliff v. Akins, 616 N.W.2d 878 (SD Supreme Court 2000) and the subsequent appeal in Setliff v. Stewart, 694 N.W.2d 859 (SD Supreme Court 2005), the South Dakota Supreme Court held that surreptitiously copying clinic data and setting up a rival clinic in Sioux Falls and Dakota Dunes while still affiliated with the practice constitutes an actionable breach of the fiduciary duty of loyalty and civil conspiracy.

Step 3: Issuing Joint Patient Transition Notices to Prevent Abandonment Claims

To avoid disciplinary investigations for unprofessional conduct or patient abandonment under S.D. Codified Laws § 36-4-30, the remaining and departing partners should negotiate a neutral, joint written notification sent to active patients at least 30 days before the departure date. This notice informs patients of the provider's new clinical location, explains how to authorize a chart transfer using a HIPAA-compliant release, and ensures the departing doctor does not violate targeted non-solicitation rules.

Step 4: Appraising Specialized Clinical Equipment and Releasing Debt Guarantees

Healthcare practices carry heavy debt loads for cone-beam computed tomography (CBCT) scanners, C-arm fluoroscopy units, surgical lasers, and CAD/CAM dental mills. Partners must appraise tangible equipment separately from enterprise goodwill, secure lender consent to release the exiting partner from personal commercial loan guarantees, and file Form UCC-3, South Dakota, Secretary of State, UCC Financing Statement Amendment with the South Dakota Secretary of State, Pierre to update equipment lien records.

Step 5: Filing Dissociation Notices and Updating Payer Credentialing

Once the buyout and separation agreement is executed, update corporate governance filings using Form Statement of Dissociation, South Dakota, Secretary of State, Statement of Dissociation at the South Dakota Secretary of State, Pierre, reassign National Provider Identifier (NPI) billing links via Form CMS-855B, Federal, Centers for Medicare and Medicaid Services, Medicare Enrollment Application for Clinics and Group Practices, and notify the South Dakota Board of Medical and Osteopathic Examiners, Sioux Falls or the South Dakota State Board of Dentistry, Pierre.

Enforcing Non-Competes and Patient Allocation by Healthcare Specialty

Because the South Dakota Supreme Court emphasized in Central Monitoring Service, Inc. v. Zakinski, 553 N.W.2d 513 (SD Supreme Court 1996) that statutory exceptions to restraint-of-trade bans under S.D. Codified Laws § 53-9-8 must be strictly construed, enforcement strategies vary significantly across clinical specialties.

Physicians and Surgical Group Practices

For physicians licensed under S.D. Codified Laws § 36-4-1, post-departure practice bans in employment or partnership contracts signed after July 1, 2023 are voidable under S.D. Codified Laws § 53-9-11.1 and S.D. Codified Laws § 53-9-11.2. However, medical groups in Sioux Falls or Rapid City can still enforce two powerful restrictions when a physician partner exits on bad terms:

• Equity Sale Non-Competes: If the clinic redeems or purchases the physician's shares for fair value, the buyout contract can legally bar the physician from competing in a designated county or municipality for up to 3 years under S.D. Codified Laws § 53-9-10.1 and the sale-of-practice exception in S.D. Codified Laws § 53-9-11.2.
• Targeted Patient Non-Solicitation: Clinics may prohibit a departing physician for up to 2 years under S.D. Codified Laws § 53-9-11 from engaging in 'soliciting'-defined by statute as a targeted affirmative act to convince a current patient to transfer their care-while still allowing general public advertising of the doctor's new practice.

Dentists and Orthodontic Clinics

Dental partnerships licensed under S.D. Codified Laws § 36-6A-1 face unique valuation and patient allocation battles involving multi-year orthodontic installment contracts, hygiene recall schedules, and work-in-progress (WIP) prosthodontics. When a dental partner departs mid-treatment on crown, implant, or aligner cases, the separation agreement must allocate pre-paid patient deposits and warranty rework liability: typically, the dentist who completes final seating of the restoration receives 50% to 60% of the collected fee, or the departing dentist reimburses the clinic for chair-time overhead and dental laboratory invoices.

Physical Therapy and Rehabilitation Clinics

Physical therapists licensed under S.D. Codified Laws § 36-10-18 are explicitly protected as practitioners under S.D. Codified Laws § 53-9-11.1(14). In physical therapy clinic breakups, the primary dispute rarely centers on chronic patient lists alone; instead, partners fight over orthopedic surgeon and primary care physician referral networks, custom rehabilitation protocols protected under the South Dakota Uniform Trade Secrets Act (S.D. Codified Laws § 37-29-1), and assumption of specialized hydrotherapy or anti-gravity treadmill leases.

How Much Does Resolving a Healthcare Partnership Dispute Cost in South Dakota?

Separating a clinical partnership involves legal, forensic valuation, and potential court costs across South Dakota:

• Healthcare Corporate & Litigation Counsel: Specialized South Dakota business divorce attorneys charge $300 to $500 per hour. Negotiating an amicable clinical buyout and patient transition agreement typically costs $5,000 to $15,000, whereas contested litigation over patient poaching or Temporary Restraining Orders (TROs) ranges from $25,000 to $85,000+.
• Certified Healthcare Practice Valuation & Equipment Appraisal: Hiring a Certified Valuation Analyst (CVA) and medical equipment appraiser to value accounts receivable aging, RVU production, and diagnostic hardware costs $6,000 to $18,000.
• Circuit Court Filing and Injunction Fees: Filing a civil complaint and motion for preliminary injunction in the Second Judicial Circuit Court, Minnehaha County Courthouse, Sioux Falls, the Seventh Judicial Circuit Court, Pennington County Courthouse, Rapid City, or the Fifth Judicial Circuit Court, Brown County Courthouse, Aberdeen requires a $70 initial filing fee under S.D. Codified Laws § 16-2-29, plus an injunction surety bond under S.D. Codified Laws § 15-6-65(c).

How Long Does the Process Take?

The timeline for a medical or dental partnership separation depends on whether the exit is negotiated or litigated:

• Emergency TRO / Patient Database Freeze: 3 to 14 days to obtain a circuit court hearing halting unlawful EHR downloads or targeted patient solicitation.
• Patient Notice & Credentialing Transition: 30 to 60 days to notify active patients, reassign Medicare/Medicaid billing numbers, and split insurance payer panels.
• Negotiated Buyout & Equipment Refinancing: 60 to 120 days to finalize forensic appraisals, bank loan assumptions, and redemption agreements.
• Contested Circuit Court Litigation: 9 to 18 months if partners litigate breach of fiduciary duty, accounts receivable splits, or wrongful dissolution through trial.

If your medical, dental, or physical therapy practice is facing a contentious partner departure, consulting an experienced South Dakota healthcare and business litigation attorney from our directory can help protect your patient base, equipment equity, and professional license.

Frequently Asked Questions (FAQ)