About
MARK CHANG, M.D. is an orthopedic surgery located at 1100 JOLIET ST in DYER, IN.
Mark Chang is one of 3 orthopedic providers listed in DYER, IN on AdvOrtho.
Practice at a glance
In 2024, 100% of Mark Chang's identifiable Medicare procedure volume was spine work. Their most frequent service was partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment for 45 Medicare patients.
Distinct procedures
8
Medicare patients
224
busiest single service
Care setting
84% office
mostly outpatient
Most-performed procedures, 2024
Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment
49
45 patients · above the state median of 20
Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment
32
22 patients · near the state median of 23
Placement of stabilizing device to back, 3-6 spine bone segments
30
29 patients · above the state median of 16
Fusion of spine in lower back
22
20 patients · near the state median of 17
Insertion of cage or mesh device to spine bone and disc space during spine fusion
18
18 patients · below the state median of 34
Fusion of spine in lower back with partial removal of spine bone and disc
15
15 patients · near the state median of 16
Training and practice
Mark Chang has been in practice since 1990, after graduating from Medical University of South Carolina College of Medicine.
- Affiliated with Advocate Trinity Hospital, Community Hospital, Franciscan Health Olympia & Chicago Heights, Ingalls Memorial Hospitaland 1 more
- Offers telehealth visits
Industry relationships
Manufacturers reported $32,000 in payments and transfers of value to Mark Chang in 2024, excluding meals, travel and gifts. Relationships like these are common among surgeons who help design implants or train other clinicians, and companies are required by law to report them.
consulting
$32,000
Reported by Medyssey USA, Inc, Abbott Laboratories, Carlsmed, Inc. and others.
Source: CMS Open Payments, 2024, as reported by manufacturers. Disclosure is required by law and does not indicate anything improper. Figures reflect what companies reported and may include work unrelated to patient care. Providers who believe a figure is wrong should take it up with CMS, and can contact us about how it appears here.
Registry record
- Licensed in Indiana and Illinois - licensed beyond the practice state, which roughly one in five providers here is
- Registered as a sole proprietor
Where this comes from
Procedure volumes:CMS Medicare Physician & Other Practitioners, 2024. Fee-for-service claims only, so they exclude privately insured, Medicare Advantage and pediatric patients - volume is not comparable across practices with different patient mixes. These are billing records, not outcomes.
Training and practice: CMS Doctors and Clinicians list. A graduation year is when training finished, not years of orthopedic experience or a board certification. Affiliations come from Medicare enrollment and may be incomplete.
Industry relationships: CMS Open Payments, as reported by manufacturers. Shown only above a threshold that excludes meals, travel and gifts, so most providers do not have this section.
Registry details: NPPES. Subspecialties are self-reported at registration, not a board certification.
Credentials: Doctor of Medicine (MD)
An MD degree indicates completion of a medical doctorate program focused on allopathic medicine. MDs complete four years of medical school followed by residency training in their chosen specialty. Orthopedic surgery residencies typically last five years and include extensive training in surgical and non-surgical treatment of musculoskeletal conditions.
Office Information
General Q&A
Ask a general question about conditions, procedures, or recovery. Not for personal medical advice or scheduling.
View Q&AMore orthopedic surgeons in DYER
Compare credentials and find the right specialist for your needs.
Browse DYER surgeonsPatient Reviews
Seen this provider?
Share your experience to help other patients.
Other Orthopedic Surgeons in DYER, IN
Profile information is sourced from the public CMS NPI Registry. Contact the office directly to confirm current availability and insurance acceptance. Providers can update this profile to reflect their current practice.
Is this your practice?
Claim this profile to add your photo, bio, specialties, insurance plans, and education. Verified profiles rank higher and receive more patient inquiries.
Claim This ProfilePlans from $59/month per provider. Cancel anytime.
Profile information is sourced from the public NPI Registry.
Request profile changes or removalWe process corrections (specialty, location, credentials) within a few business days. Full profile removal is reserved for retirement, license changes, identity theft, deceased providers, and court orders — reviewed individually within 30 days. Reviews and public NPI Registry data are not removed in response to disputed reviews; if a review violates our reviews policy, you may dispute it directly.