Managed Care Expert Witness

Overview

About Managed Care Expert Witnesses

A managed care expert decides whether a health plan's systems for controlling access and cost worked as required: whether the network was adequate, whether utilization management followed the rules, and whether plan incentives bent medical decisions. The focus is the plan's machinery across many members. A single denied claim belongs to the health insurance page, what a plan owes a provider to the medical provider insurance disputes page, and whether the care met the clinical standard to a treating-specialty physician.

Which Program Sets the Network Rules

Managed care is a set of separate regulatory programs, so the first step is identifying the coverage. The expert then reads that program's rule for the date at issue, because the requirements have been changing.

• Medicare Advantage. An MA plan must meet maximum time and distance standards and contract with a specified minimum number of each provider and facility specialty type, and CMS determines and publishes the time and distance standards each year ¹
• Medicaid managed care. A state contracting with managed care entities must develop and enforce network adequacy standards, including a quantitative standard for listed provider types such as primary care, OB/GYN, and mental health and substance use providers ²
• Marketplace plans. A qualified health plan must keep a network sufficient in number and types of providers, including mental health and substance use disorder specialists, so that all services are accessible without unreasonable delay ³

Commercial plans sold outside those programs fall under state law, and many self-funded employer plans have their own arrangements.

Network cases test whether the directory matches reality. A plan can meet a time and distance count while members cannot actually get an appointment. An expert reads the provider files, contracts, directory data, access complaints and appeals, and any regulator submissions, then compares the claimed network with who was taking new patients, at which sites, and with what wait. Secret shopper surveys are a common tool, and their method will be attacked, so the sampling needs to be sound. Behavioral health is often the hardest network to prove, and parity rules may also apply there.

Utilization Management

Utilization management decides what gets paid before or after the care. Timing and criteria are written into the rules for federal programs.

For Medicaid managed care, a standard authorization decision must come within state time frames that may not exceed 14 calendar days for rating periods starting before January 1, 2026, and 7 calendar days for rating periods on or after that date ⁴. An expedited decision must come no later than 72 hours after the request ⁴. The two-tier date is an easy point to miss in a 2026 case.

For Medicare Advantage, coverage rules limit a plan's freedom to write its own criteria. An organization may create internal coverage criteria only when coverage criteria are not fully established, and must make them publicly accessible and base them on current evidence in widely used treatment guidelines or clinical literature ⁵. It must demonstrate that added criteria provide clinical benefits highly likely to outweigh clinical harms, including from delayed or decreased access ⁵. So an expert compares a denial with the Medicare criterion, the plan's internal policy and the evidence behind it. Algorithm-assisted review raises the same questions: what criterion did the tool apply, and who made the decision.

Physician Incentives and Liability

Incentive design is a long-running theme. In Pegram v. Herdrich (2000), the Supreme Court held that mixed treatment and eligibility decisions by HMO physicians are not fiduciary decisions under ERISA ⁶. Aetna Health v. Davila (2004) held that state-law claims over a plan's coverage decision were completely preempted and removable to federal court ⁷. Together they push many claims against employer plans out of state court and into ERISA's remedies, so the program and the claim type should be settled before an expert is retained. Plans outside ERISA may face different exposure.

Who Is Qualified

No single credential covers this field. Look for former health plan medical directors, network executives, utilization management leaders, or state or federal plan regulators, in the same program and era. A Medicare Advantage career does not automatically transfer to Medicaid. Network analysis may need a data analyst, and clinical necessity needs a physician in that specialty. The expert describes how the system worked and what the rule required, and leaves preemption and duty questions to the court.

Qualifications

Qualifications to Look For

• ✓Former health plan medical director or utilization management leader
• ✓Network development or provider contracting leadership at a comparable plan
• ✓Federal or state regulator experience in the program at issue
• ✓Direct experience in the same program, such as Medicare Advantage or Medicaid
• ✓Ability to read provider files, directory data and appeal records
• ✓No single credential covers this field, so the work record is the credential
• ✓Prior deposition or trial testimony on plan operations

FAQ

Frequently Asked Questions