William Sack D.D.S.
About this NPIWhat this record shows.
NPI 1487817615 is registered to William Sack D.D.S., a Dentist practising at 425 Burlington Ave in Downers Grove, Illinois. Dentist is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. William Sack D.D.S. has been enumerated in the National Provider Identifier (NPI) registry since 2008.
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 William Sack D.D.S. accepts. To confirm in-network status with your specific health plan, contact William Sack D.D.S. directly at (630) 968-5900.
Frequently asked
Yes. NPI 1487817615 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Dentist 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) 968-5900.
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. William Sack D.D.S. is a Type-1 individual NPI.