Healthcare Data Expertise.
Court-Ready.
Richard Lieberman provides expert witness testimony and litigation support in matters involving risk adjustment, health care financing, encounter data management, Medicare Advantage, Medicaid managed care, and ACA Marketplace programs.
Nothing on this page constitutes legal advice or an attorney-client relationship. Past engagements are described at a general level consistent with confidentiality obligations. Prospective clients are encouraged to contact us directly to discuss the specific facts of their matter.
What We Testify To
- Medicare Advantage risk adjustment (HCC/CMS-HCC models)
- Medicaid managed care risk adjustment (CDPS/MedicaidRx, ACGs)
- ACA Marketplace risk adjustment programs
- Encounter data management and submission standards
- Risk Adjustment Data Validation (RADV) audits
- Health Risk Assessments (HRAs) and coding practices
- HEDIS quality measurement and Stars ratings
- Shared savings calculations and value-based contracts
- PBM transaction data and medication adherence
- Healthcare data governance and ETL processes
- Medicare and Medicaid statutes, regulations, and policy
Depth That Holds Up
Richard Lieberman has been involved in risk adjustment model design since 1991 — predating the Medicare Advantage program itself. He co-developed the ACG risk adjustment methodology at Johns Hopkins and has built software that health plans use operationally.
That combination of policy depth, technical expertise, and clinical background means he can explain complex topics credibly to judges, juries, and opposing counsel — and withstand rigorous cross-examination.
He has been deposed, prepared expert reports, and served in both plaintiff and defense matters at the federal and state court levels.
Track Record
Pharmaceutical Group Purchasing Organization v. PBMs
Expert witness and data scientist on behalf of a pharmaceutical GPO alleging systematic underpayment by contracted pharmacy benefit managers. Ongoing engagement.
Federal Court · Risk Adjustment & Health Risk Assessments
Expert witness in federal court matter involving risk adjustment, health care financing, and health risk assessments. Prepared two expert reports; deposed two days by opposing counsel. Confidential settlement.
Independent Practice Association · Shared Savings Dispute
Data scientist for an IPA litigating a breach of contract claim over unpaid and miscalculated shared savings payments. State court proceedings.
Federal Court · Risk Adjustment & Encounter Data
Data scientist and expert witness in a federal breach-of-contract and misappropriation of trade secrets case involving risk adjustment and Medicare encounter data. Confidential settlement.
Federal Criminal Defense · Medicare Advantage Fraud
Data scientist on behalf of a defendant in a criminal healthcare fraud matter involving Medicare Advantage risk adjustment. Analyzed data and calculations prepared by the FBI, HHS/OIG, and CMS.
Discuss Your Matter
Contact us to discuss the specific facts of your case and how we can help.
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