Dr. Gerard Cerniak M.D.
About this NPIWhat this record shows.
NPI 1003587049 is registered to Dr. Gerard Cerniak M.D., a Gastroenterology practising at 208 Timberline Ct. in Joliet, Illinois. Gastroenterology is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Dr. Gerard Cerniak M.D. has been enumerated in the National Provider Identifier (NPI) registry since 2021.
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. Gerard Cerniak M.D. accepts. To confirm in-network status with your specific health plan, contact Dr. Gerard Cerniak M.D. directly at (815) 744-7507.
Frequently asked
Yes. NPI 1003587049 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Gastroenterology 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) 744-7507.
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. Gerard Cerniak M.D. is a Type-1 individual NPI.