Mark K Chang MD
About this NPIWhat this record shows.
NPI 1003022476 is registered to Mark K Chang MD, a healthcare organisation classified as "Orthopaedic Surgery of the Spine" and located at 1100 Joliet St, Ste 104 in Dyer, Indiana. The organisation's authorised official is Mark Chang. The organisation has been enumerated in the NPI registry since 2007.
Secondary identifiers
Additional identifiers this provider has registered with NPPES. Used by medical billers, credentialers, and insurance verifiers to cross-reference claims and enrollments.
Medicaid
Other
- DG1633IL· Issued by RR MEDICARE
Source: NPPES public registry.
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.
DME Supplier
- O20100930082604Physician - Orthopedic/Orthopedic SurgeryIN
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 Mark K Chang MD accepts. To confirm in-network status with your specific health plan, contact Mark K Chang MD directly at (219) 836-4955.
Frequently asked
Yes. NPI 1003022476 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Orthopaedic Surgery of the Spine 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 (219) 836-4955.
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. Mark K Chang MD is a Type-2 organisational NPI.