Health Affairs' Rob Lott interviews Derek T. Lake on his recent paper exploring new research on Optum’s acquisitions, finding the company tended to buy physician practices already using ambulatory surgery centers and that its ASC acquisitions were followed by higher prices for competing insurers.

Order the February 2026 issue of Health Affairs.

Currently, more than 70 percent of our content is freely available - and we'd like to keep it that way. With your support, we can continue to keep our digital publication Forefront and podcast for everyone.