MedStar Health, Epic and Ascension Health have collected Medicare, Medicaid and private insurer data they say prove that telehealth care is substitutive for in-person care in certain consultative specialties and for patients who see their primary care providers four or more times a year. The health care systems plan to share their results with federal policy makers in hopes of settling the debate over whether telehealth is additive care. All the groups found that billable evaluation and management visits across...