Ambulatory Services Market Size, Share & Industry Analysis, By Service Type (Primary & Preventive Care Services, Specialist Consultation Services, Diagnostic & Monitoring Services, and Ambulatory Surgical & Interventional Services), By Medical Specialty (Primary Care & General Medicine, Cardiology, Orthopedics & Musculoskeletal Care, and Gastroenterology), By Ownership (Public/Government-owned, Private Nonprofit, and Private For-profit), By Care Setting (Hospital Outpatient Departments, Physician Offices & Group Practices, and Ambulatory Surgical Centers), and Regional Forecast, 2026-2034