Mr. Delfin Diaz
About this NPIWhat this record shows.
NPI 1629388699 is registered to Mr. Delfin Diaz, a Public Health & General Preventive Medicine Physician practising at 2133 W Lexington St in Chicago, Illinois. Public Health & General Preventive Medicine Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Mr. Delfin Diaz has been enumerated in the National Provider Identifier (NPI) registry since 2010.
Your brand here.
Secondary identifiers
Additional identifiers this provider has registered with NPPES. Used by medical billers, credentialers, and insurance verifiers to cross-reference claims and enrollments.
Other
- 001145IL· Issued by RISK ASSESOR
Source: NPPES public registry.
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 Mr. Delfin Diaz accepts. To confirm in-network status with your specific health plan, contact Mr. Delfin Diaz directly at (312) 746-4664.
Frequently asked
Yes. NPI 1629388699 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Public Health & General Preventive Medicine Physician 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 (312) 746-4664.
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. Mr. Delfin Diaz is a Type-1 individual NPI.