Physician Profile
Mark K Chang, M.D. practices orthopedic surgery in Dyer, IN. Mark is a 1990 graduate of Medical University of South Carolina College of Medicine. Mark is also listed as specializing in orthopaedic surgery. Medicare claims data shows Mark provided 1,677 services to 1,120 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Source: NPPES NPI Registry
1100 JOLIET ST STE 104
Dyer, IN 46311
Within Orthopedic Surgery generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Elbow, hand, and wrist
Foot and ankle
Hip
Knee
Shoulder
Sports and soft tissue
Trauma and bone
Spine
Evaluation and nonsurgical
Arthroscopy
Foot and ankle
Hand and upper extremity
Joint replacement
Trauma and fixation
1,677 services · 1,120 patients · 21 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment | Procedure | 63047 |
49 |
| Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment | Procedure | 63048 |
32 |
| Placement of stabilizing device to back, 3-6 spine bone segments | Procedure | 22842 |
30 |
| Fusion of spine in lower back | Procedure | 22612 |
22 |
| Insertion of cage or mesh device to spine bone and disc space during spine fusion | Procedure | 22853 |
18 |
| Fusion of spine in lower back with partial removal of spine bone and disc | Procedure | 22633 |
15 |
| Partial removal of bone of single segment of spine in lower back with release of spinal cord and/or nerves during fusion of spine in lower back | Procedure | 63052 |
13 |
| Removal of stabilizing device from back of spine | Procedure | 22850 |
12 |
| X-ray of lower and sacral spine, 2-3 views | Imaging | 72100 |
276 |
| X-ray of upper spine, 2-3 views | Imaging | 72040 |
70 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dr. Chang is an orthopedic surgeon in Dyer, IN. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “ORTHOPEDIC SURGERY”.
NPI registry
Dr. Chang is listed at 1100 JOLIET ST STE 104, Dyer, IN 46311. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (219) 836-4955. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Dr. Chang's National Provider Identifier is 1871607507. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Dr. Chang attended Medical University of South Carolina College of Medicine, graduating in 1990. This comes from the CMS National Downloadable File.
CMS public data
Dr. Chang has 36 years experience. Calculated from a graduation year of 1990, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Dr. Chang performs procedures including partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment, partial removal of spine bone with release of spinal cord and/or nerves, each additional segment and placement of stabilizing device to back, 3-6 spine bone segments; reads or performs imaging such as x-ray of lower and sacral spine, 2-3 views and x-ray of upper spine, 2-3 views, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Chang. If this is you, claiming it is free.
Guide.md
Verify your identity to control how patients — and AI assistants — describe you.
Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.