Healthcare Discount Plan Market Size & Share, By Service (Health Advocate, Virtual Visits, Alternative Medicines, Prescription Drugs, Dental Care, Vision Care, Hearing Aids, Chiropractic Care, Nurse Services, Vitamins & Supplements, Wellness Plans, Podiatry Plans, Others), Application (Hospitals, Clinics) - Growth Trends, Regional Insights (U.S., Japan, South Korea, UK, Germany), Competitive Positioning, Global Forecast Report 2025-2034