Chen Zhang MD
About this NPIWhat this record shows.
NPI 1639601388 is registered to Chen Zhang MD, a Hematology & Oncology practising at 1520 W Harrison St in Chicago, Illinois. Hematology & Oncology is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Chen Zhang MD has been enumerated in the National Provider Identifier (NPI) registry since 2017.
Medicare enrollment
This provider holds a Medicare enrollment on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Practitioner
- I20200713001200Internal MedicineIL
Source: CMS PECOS public enrollment file.
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 Chen Zhang MD accepts. To confirm in-network status with your specific health plan, contact Chen Zhang MD directly at (312) 942-5904.
Frequently asked
Yes. NPI 1639601388 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Hematology & Oncology 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) 942-5904.
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. Chen Zhang MD is a Type-1 individual NPI.