In 2020, a nationwide shift to telepsychiatry occurred in the wake of the Coronavirus Disease 2019 (COVID-19) pandemic and lockdowns. To assess the rates of telepsychiatry appointment attendance pre- and post-lockdown, we conducted a national, multi-site survey of appointments in 2020 compared to a similar time period in 2019, at outpatient child psychiatry clinics that specialize in the treatment of patients with Autism Spectrum Disorder (ASD) and/or Developmental Disabilities (DD). ASD/DD clinics rapidly shifted to telepsychiatry, returning to pre-pandemic appointment numbers and completion rates within months. We advocate for the continued funding of this care model, discuss the substantial benefits physicians, patients and families have found in using telepsychiatry, and suggest ways to improve future access for ASD/DD telepsychiatry.