# WILLIAM SEIDEL WILLIAM SEIDEL is an ADHD evaluation provider with an address in HASTINGS ON HUDSON, NY, United States. ## Details - Address: 139 SOUTHSIDE AVE, HASTINGS ON HUDSON, NY, 107062242 - Phone: [914-591-8188]() - National Provider Identifier (NPI): 1831426915 - Credentials: PhD - Provider type: Clinical neuropsychologist - Source of the listing data: CMS NPI Registry, retrieved 2026-10-03, public, free ## Questions ### Where is WILLIAM SEIDEL? WILLIAM SEIDEL is at 139 SOUTHSIDE AVE, HASTINGS ON HUDSON, NY, 107062242. ### How do I contact WILLIAM SEIDEL? To contact WILLIAM SEIDEL, call 914-591-8188. ### Is WILLIAM SEIDEL accepting new patients? That is not in the registry data. Call the phone number on the listing and ask about availability, wait times and insurance. ## Source From [CMS NPI Registry (National Plan and Provider Enumeration System)](https://npiregistry.cms.hhs.gov/api/?version=2.1&number=1831426915), license US government public data. CMS publishes NPPES provider data for open access under its data dissemination notice., checked 2026-10-06. Last updated October 6, 2026. ## Links - This ADHD evaluation provider on the [web page]() - [ADHD evaluations in HASTINGS ON HUDSON]() - [Clinical neuropsychologists in HASTINGS ON HUDSON]() - [More ADHD evaluation providers in HASTINGS ON HUDSON]()