# JOHN NEUDECKER JOHN NEUDECKER is an ADHD evaluation provider with an address in SAINT LOUIS, MO, United States. ## Details - Address: 1 JEFFERSON BARRACKS DR, SAINT LOUIS, MO, 631254181 - Phone: [314-652-4100]() - National Provider Identifier (NPI): 1427285105 - Credentials: Ph.D. - Provider type: Clinical neuropsychologist - Source of the listing data: CMS NPI Registry, retrieved 2026-10-03, public, free ## Questions ### Where is JOHN NEUDECKER? JOHN NEUDECKER is at 1 JEFFERSON BARRACKS DR, SAINT LOUIS, MO, 631254181. ### How do I contact JOHN NEUDECKER? To contact JOHN NEUDECKER, call 314-652-4100. ### Is JOHN NEUDECKER 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=1427285105), 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 SAINT LOUIS]() - [Clinical neuropsychologists in SAINT LOUIS]() - [More ADHD evaluation providers in SAINT LOUIS]()