Dr. John Chang D.O.
About this NPIWhat this record shows.
NPI 1679557326 is registered to Dr. John Chang D.O., a Emergency Medicine practising at 34 Haverhill St in Lawrence, Massachusetts. Emergency Medicine is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Dr. John Chang D.O. has been enumerated in the National Provider Identifier (NPI) registry since 2005.
Your brand here.
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
- I20050405000273Emergency MedicineMA
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 Dr. John Chang D.O. accepts. To confirm in-network status with your specific health plan, contact Dr. John Chang D.O. directly at (978) 686-0090.
Frequently asked
Yes. NPI 1679557326 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Emergency Medicine 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 (978) 686-0090.
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. John Chang D.O. is a Type-1 individual NPI.