Baltimore, Md.-based Johns Hopkins Hospital is renovating its children's medical and surgical center and building a 12-story addition.  

Chattanooga, Tenn.-based Vascular Institute has opened a clinic in Dayton, Tenn., The Chattanoogan said Jan. 17.

Here are 11 hospitals and health systems that opened or announced plans for ASCs in December:

Tyler, Texas-based Christus Trinity Mother Frances and Pediatric Surgical Associates are teaming up to open an outpatient clinic and offer ambulatory surgery, the Longview News-Journal reported Jan. 13. 

Lee Health is opening a women’s cardiac surgery center at its Fort Myers, Fla.-based Shipley Cardiothoracic Center in February, Naples Daily News reported Jan. 12. 

An 11-building portfolio of medical offices in Florida, Illinois, Minnesota, North Carolina, North Dakota and Wisconsin was sold by real estate manager Ryan Companies, the Minneapolis/St.Paul Business Journal reported Jan. 10.

A proposed $3 million independent ASC in Colchester, Vt., is scheduled for review this month, the VTDigger reported Jan. 11. 

Iowa City, Iowa-based Steindler Orthopedic Clinic and an unnamed hospital system bumped their joint plan to build an ASC, but the $19.2 million ASC proposal will proceed without the hospital for now, The Gazette reported Jan. 10. 

Great Falls (Mont.) Clinic has planned a $7 million surgery center expansion, Great Falls Tribune reported Jan. 8. 

Raleigh Neurological Clinic and Compass Surgical Partners opened a joint venture ASC in Raleigh, N.C., where both organizations are headquartered.

North Carolina's complex certificate of need laws are often a roadblock to open ASCs in the state. 

St. Luke’s Health System is discarding its plan to build an orthopedic hospital with medical offices in Boise, Idaho, in favor of a facility featuring an ASC and outpatient clinics, BoiseDev reported Jan. 6. 

HCA Florida Healthcare opened the Hospital for Endocrine Surgery in Tampa, Fla., on Jan. 3.

Green Bay, Wis.-based Prevea Health is building a multispecialty ASC next to the Prevea St. Mary's Health Center, Fox11 News reported Jan. 4. 

University of California San Diego broke ground on an outpatient center, a part of a multibillion dollar project on its La Jolla (Calif.) campus, American School & University reported Jan. 3. 

Virginia Hospital Center recently placed the last beam on its outpatient pavilion in Arlington, The Construction Specifier reported Jan. 3. 

Southern California private equity firm IRA Capital has acquired a medical plaza that's planning to add an ASC. 

Here are 58 joint-venture ASCs Becker's ASC Review has reported on in 2021:

Buffalo, N.Y.-based Kaleida Health has at least two ASC projects on the books for 2022, Buffalo Business First reported Dec. 29.

Chicago-based University of Illinois Health is building a new ASC in the city, set to open in fall 2022.