No, not all doctors accept Medicaid — but the majority do. According to a 2019 report from the Medicaid and Children's Health Insurance Program Payment and Access Commission (MACPAC), about 71% of doctors accept new patients with Medicaid (versus about 90% for patients who have private insurance or Medicare). But there's quite a bit of variation by specialty: Pediatricians, OB/GYNs, and general surgeons all accept new patients with Medicaid at a rate well above the average, while psychiatrists are much less likely to accept new patients with Medicaid.