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About this NPIWhat this record shows.
NPI 1639040231 is registered to Deirdre Stone Mat, a Developmental Therapist practising at 808 N Cleveland Ave in Chicago, Illinois. Developmental Therapist is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Deirdre Stone Mat has been enumerated in the National Provider Identifier (NPI) registry since 2025.
Provider type
Individual (Type 1)
Status
Active
Enumerated
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The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans Deirdre Stone Mat accepts. To confirm in-network status with your specific health plan, contact Deirdre Stone Mat directly at (815) 641-0435.
Frequently asked
Yes. NPI 1639040231 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Developmental Therapist 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 (815) 641-0435.
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. Deirdre Stone Mat is a Type-1 individual NPI.
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