Thanks, Saum, and hello, everyone. Our financial results in the second quarter were strong with USPI and the hospitals adjusted EBITDA, same-store volumes, and revenues above our expectations. In the quarter, we generated consolidated adjusted EBITDA of $843 million above the high end of our second quarter guidance range. Our results were driven by strong same store revenues and volumes, high patient acuity, and effective cost control. Now I'd like to highlight a few key items for each of our segments. Let's start with USPI, which delivered strong growth and continues to provide high-quality care to our patients. In the quarter, USPI produced a 9.8% increase in same facility net operating revenues compared to last year, with case volumes up 6.6% and net revenue per case up 2.9%. We saw strong growth in GI, urology, ENT, and orthopedic cases. USPI's adjusted EBITDA excluding grant income grew 16.4% compared to the second quarter of last year and it's margin continues to be very strong at 39.2%. We're pleased with continued strength of USPI's performance, which is a testament to the attractiveness of the portfolio and the value we provide to our stakeholders. Turning to our acute care hospital business. Second quarter same hospital adjusted admissions increased 3.2% compared to the second quarter last year and total same hospital inpatient admissions increased 3%. While non-COVID admissions increased 5%. In fact, year-to-date, non-COVID admissions are up 9.2% over last year. Our labor management continues to be very effective despite the cost pressures, especially contract nurse staffing costs. On a consolidated basis, contract labor costs were 4.3% of SW&B in the second quarter, a significant decline from 6% in the first quarter this year, 7.3% in the fourth quarter of last year, and 6.2% in the second quarter last year. Our consolidated SW&B costs as a percent of revenue were 45% in the quarter compared to 45.8% in the second quarter last year. And our case-mix and revenue yield remained strong, as we continue our strategic focus on investments in higher acuity, higher margin service lines. And our case mix index in the quarter has grown at a 3% CAGR, since 2019 before the pandemic. Let's now turn to Conifer, which again delivered a solid quarter. Conifer produced second quarter adjusted EBITDA of $85 million and a strong margin of approximately 26%. Overall, we were very pleased with our performance in the second quarter. Let's now review our cash flows, balance sheet, and capital structure. At the end of the quarter, we had $934 million of cash on hand and no borrowings outstanding under our line of credit. We generated $466 million of free cash flow in the quarter and $680 million so far this year, bolstered by Conifer's strong cash collection performance. As previously announced, in the second quarter, we issued $1.35 billion of secured notes that mature in 2031. We used the proceeds from the notes to early retire $1.345 billion of our then outstanding secured notes that were due next year. We now have no significant debt maturities until 2026. And we have approximately $1.6 billion of secured debt borrowing capacity available if needed. Our June 30th, leverage ratio was 4.14 times EBITDA compared to 4.1 times at year end 2022. Also during the quarter, we repurchased approximately 580,000 shares of our stock for 40 million as part of our $1 billion share repurchase program. Since the inception of the program last year, we have repurchased approximately 7.4 million shares or about 7% of our then-outstanding shares for $340 million at an average price of about $46 per share. We believe our strong free cash flow generation and capital deployment actions will continue to provide us ample financial flexibility to support our growth initiatives. Let me now turn to our outlook for this year. As Saum mentioned, we are raising our 2023 adjusted EBITDA outlook by $75 million to $3, 385 million at the midpoint of our range, reflecting our continued strong performance. This $75 million increase includes a $45 million raise for USPI and a 30 million raise for our hospitals. Additionally, we now expect net operating revenues be in a range of $20.1 billion to $20.5 billion, an increase of $300 million. We've increased our assumptions for growth in hospital inpatient admissions and adjusted admissions. Additionally, in the USPI, we've increased our assumptions for same facility surgical case growth to 5% to 6% for 2023, a 200 basis point increase over our prior expectations. Our increased full-year EBITDA guidance absorbed an approximately $15 million headwind from recently passed legislation in Florida, which among other things reduced worker's compensation and personal injury reimbursements. Regarding our third quarter outlook, we expect consolidated adjusted EBITDA to be in the range of $775 million to $825 million or $800 million at the midpoint. And we anticipate the USPI's EBITDA in the third quarter at the midpoint will be approximately 23% to 24% of our full year 2023 USPI EBITDA guidance of $1,510 million at the midpoint of our range. Turning to our cash flows for 2023. From a cash flow perspective, we expect net cash from operating activities to increase $50 million over our prior expectations and are reinvesting this amount back into our business in the form of higher capital expenditures to fuel future growth. As a result, we continue to expect free cash flow to be in the range of $1.1 billion to $1.35 billion for this year. Our free cash flow generation has improved substantially over the past several years and we expect our business to continue to drive strong cash flows, while executing on our growth plans. Our improved cash flow provide us with significant financial flexibility to effectively deploy capital for the benefit of shareholders. As a reminder, our capital deployment priorities have not changed. First, we plan to continue allocating approximately $250 million of capital annually to grow our USPI surgery center business. Second, enhancing our hospital growth opportunities, including the continued focus on higher acuity service offerings. Third, evaluating further opportunities to retire and/or refinance debt and share repurchases depending on market conditions and other investment opportunities. And with that, we're ready to begin the Q&A. Operator?