John Warren MD
About this NPIWhat this record shows.
NPI 1104848563 is registered to John Warren MD, a Clinical Pathology/Laboratory Medicine Physician practising at 680 N Lake Shore Dr, Suite 1000 in Chicago, Illinois. Clinical Pathology/Laboratory Medicine Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. John Warren MD has been enumerated in the National Provider Identifier (NPI) registry since 2006.
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 John Warren MD accepts. To confirm in-network status with your specific health plan, contact John Warren MD directly at (312) 695-9797.
Frequently asked
Yes. NPI 1104848563 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Clinical Pathology/Laboratory 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) 695-9797.
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. John Warren MD is a Type-1 individual NPI.