Dr. Douglas Demerchant PSY.D.
About this NPIWhat this record shows.
NPI 1831564228 is registered to Dr. Douglas Demerchant PSY.D., a Clinical Psychologist practising at 620 W Roosevelt Rd Ste D1 in Wheaton, Illinois. Clinical Psychologist is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Dr. Douglas Demerchant PSY.D. has been enumerated in the National Provider Identifier (NPI) registry since 2015.
Your brand here.
Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans Dr. Douglas Demerchant PSY.D. accepts. To confirm in-network status with your specific health plan, contact Dr. Douglas Demerchant PSY.D. directly at (630) 462-1999.
Frequently asked
Yes. NPI 1831564228 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Clinical Psychologist is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (630) 462-1999.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. Dr. Douglas Demerchant PSY.D. is a Type-1 individual NPI.