| State | Name as filed |
|---|---|
| CA | Ambulatory TopCo, LLC |
| State | Agency | Source key | Raw status | Status | Stage | Review type |
|---|---|---|---|---|---|---|
| OR | Oregon Health Authority | 063 | Approved | APPROVED | PRELIMINARY | Preliminary Review |
| CA | Office of Health Care Affordability (HCAI) | material-change-notification-ambulatory-topco | CMIR Waived | WAIVED | NOTICE | Through an equity purchase agreement, Ascension Health Alliance, an out-of-state Catholic health system, will acquire Ambulatory TopCo, LLC’s (AMSURG) ambulatory surgery centers (including 25 in California) for the purchase price of $3.9 billion. |
| MA | Massachusetts Health Policy Commission | /sites/default/files/2025-09/20250819%20Ascension%20MCN.pdf | No | WAIVED | NOTICE | Provider merger/affiliation increasing NPSR $10M |
| Date | Date kind | Event | Raw text | Source |
|---|---|---|---|---|
| 2025-08-19 | PUBLISHED | NOTICE_FILED | Date HPC Received: August 19, 2025 | MA agency page |
| 2025-10-01 | PUBLISHED | NOTICE_ACCEPTED | Date Submission Completed: October 1, 2025 | CA agency page |
| 2026-03-25 | PUBLISHED | OTHER | OHA completed a 30-day preliminary review of this transaction on March 25, 2026. | OR agency page |
| not dated | PUBLISHED | CMIR_WAIVED | CMIR Waived | CA agency page |
| not dated | PUBLISHED | CMIR_WAIVED | CMIR? No | MA agency page |
| Source | Captured at (UTC) |
|---|---|
| https://www.oregon.gov/oha/HPA/HP/Pages/HCMO-transaction-notices-and-reviews.aspx | 2026-09-26T11:15:31.315Z |
| https://www.oregon.gov/oha/HPA/HP/Pages/063-Ascension-AMSURG.aspx | 2026-09-26T07:14:12.169Z |
| https://hcai.ca.gov/affordability/ohca/assess-market-consolidation/material-change-transaction-notices-mcn-and-cost-and-market-impact-review-cmir/ | 2026-09-26T11:15:42.293Z |
| https://masshpc.gov/moat/mcn-cmir/mcn-transactions | 2026-09-26T11:15:46.231Z |