Katherine A Trefz

Williams & Connolly

Address of record: 680 Maine Avenue SW, Washington, DC 20024, 202-434-5038
Email: ktrefz@wc.com
Phone: (202) 434-5038

Contact details as filed with the court in the cases below.

Cases tracked

0 active · 1 settled

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Plaintiff-side recovery

Disclosed settlement funds

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Defense-side exposure

Resolved in settlements

Cases with values

of 1 tracked

Case history

Publicly tracked matters where this attorney is listed as counsel.

CounselSettled — claims closed

Sutter Health Premium Overpayment Settlement

Sutter Health allegedly included unfair contract terms with insurance plans (Aetna, Anthem Blue Cross, Blue Shield of California, Health Net, and United Healthcare) that caused these insurers to overpay for hospital services, resulting in higher premiums for individuals and businesses. Sutter Health denies any wrongdoing; the court did not decide the case on the merits but the parties agreed to settle to avoid further litigation.

Settlement fund: $228.5M
Claim deadline: September 12, 2025
Represents: Aetna Life Insurance Company, Aetna Health of California, Inc.

“Recovery” and “exposure” refer to total disclosed settlement funds in associated cases, not money personally won or lost by an attorney. Settlements generally resolve disputed allegations without a finding that either side won. Data comes from public court dockets and may be incomplete.