Mark K Chang MD

Mark K Chang MD is a healthcare organization registered as Orthopaedic Surgery of the Spine Physician in Dyer, IN, holding Type 2 (organization) NPI 1003022476 since 2007. The authorized official on file is Mark Chang, Medical Director.

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NPI	1003022476
Entity type	Organization (Type 2)
Legal business name	Mark K Chang MD
Other name	<Unavail>
Practice address	1100 JOLIET ST, STE 104, Dyer, IN, 46311
Phone	2198364955
Fax	2198652377
Enumeration date	2007-05-15
Last updated in NPPES	2015-01-13

Authorized official

Name	Mark Chang
Title	Medical Director
Phone	2198364955

Taxonomy & classification

Taxonomy code	Specialty	Primary	License	State
207XS0117X	Orthopaedic Surgery of the Spine Physician	Primary	036095817	IL

Other identifiers

Identifier	Type	State	Issuer
200868870A	Medicaid	IN	—
DG1633	Other	IL	RR MEDICARE

Copy-ready billing details

Provider: Mark K Chang MD
NPI: 1003022476
Taxonomy: 207XS0117X (Orthopaedic Surgery of the Spine Physician)
Address: 1100 JOLIET ST, STE 104, Dyer, IN, 46311

Providers at this address

NPI	Name	Type	Specialty	Location
1871561977	Douglas Hoeksema	Individual	Physical Therapist	Dyer, IN
1497709950	Mbwoude, Inc.	Organization	Physical Therapist	Dyer, IN
1528014859	Tara Pai	Individual	Physical Therapist	Dyer, IN
1699715615	Daniel Benjamin	Individual	Physical Therapist	Dyer, IN
1578503744	Sima Shah	Individual	Physical Therapist	Dyer, IN
1750319679	Back To Work, Inc.	Organization	Physical Therapist	Dyer, IN
1669486833	Sara Stafford	Individual	Physical Therapist	Dyer, IN
1871607507	Mark Chang	Individual	Orthopaedic Surgery Physician	Dyer, IN

Verify this record

Cross-check NPI 1003022476 against the authoritative CMS record: view Mark K Chang MD on the official NPPES registry .

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.

Frequently asked questions

Where is Mark K Chang MD located?

The practice location on file with NPPES is in Dyer, IN.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2015-01-13. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2015-01-13.