UnitedHealth Group's Optum, parent company of ASC chain SCA Health, is on a spending spree, scooping up physician groups and expanding its portfolio. 

Oakland, Calif.-based Kaiser Permanente has inked a deal to acquire Geisinger Health and its more than 1,700 physicians. 

Dallas-based United Surgical Partners International is the largest ASC chain by both number of surgery centers and number of physicians. 

Dallas-based United Surgical Partners International is continuing to grow, with $340 million in adjusted earnings in the first quarter, according to an April 25 earnings call from Tenet, USPI's parent company, as transcribed by Seeking Alpha. 

Tenet Healthcare's ASC arm — Dallas-based United Surgical Partners International — is the largest ASC chain in the country by number of physicians. 

The ASC industry is slowly consolidating, and three deals in the last five years point to the different ways ASC chains are growing. 

United Surgical Partners International is an ASC powerhouse. With more than 442 ASCs and 24 surgical hospitals across 35 states, it is the largest network in the country. 

Here are six healthcare updates from Amazon for ASC leaders to know:

Canton, Ohio-based Cleveland Clinic Mercy Hospital has donated a 5,800-square-foot medical office building to Beacon Charitable Pharmacy, a group providing low-cost prescription medication to the community. 

Medical office building mergers and acquisitions were up 13.7 percent in the first quarter of 2023 and up 5 percent from the same period last year. 

Echo Real Estate Capital has acquired a 7,550-square-foot medical office building in Morton Grove, Ill., according to an April 13 report from REJournals.

Here are five moves from Oakland, Calif.-based Kaiser Permanente since Feb. 13. 

Flagship Healthcare Properties has acquired a 14,445-square-foot medical office and ASC building in Jackson, Tenn., according to an April 13 report from REJournals.

A 40,000-square-foot medical office building in Stafford, Texas, a suburb of Houston, has sold, according to an April 12 report from REbusiness Online. 

Healthcare real estate investor Montecito Medical has acquired a 119,945-square-foot medical office building in Columbia, S.C., according to an April 10 report from ConnectCRE. 

Becker's was joined by 32 leaders who discussed the increasing consolidation of the ASC industry. 

Summit Development has sold a 490,000-square-foot medical office building in Chappaqua, N.Y., according to an April 10 report from Commercial Property Executive.

Los Angeles-based real estate firm Stockdale Capital Partners has launched a healthcare real estate fund and purchased a 147,000-square-foot medical office building in Los Angeles for an undisclosed price, according to an April 10 report from Globest.com.

Here are three major deals in March that ASC leaders need to know:

Here are five updates from Amazon since March 6 that healthcare leaders need to know: