MARK K CHANG M.D.
NPI 1871607507
Orthopaedic Surgery in Dyer, IN

Q: What is Mark Chang's NPI number?

The NPI number for Mark Chang is 1871607507. It was assigned to this individual provider in the NPPES registry on August 19, 2006.

Q: What is Mark Chang's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Q: When was this NPI record last updated?

The NPPES record for Mark Chang was last updated on February 5, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since August 19, 2006PECOS EnrolledAccepts Medicare Assignment

38.58/100

CMS Quality Rating

1100 JOLIET ST, STE 104, DYER, IN 46311(219) 836-4955(219) 865-2377 Get Directions Write a Review

NPPES record last updated: February 5, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Feb 5, 2025, Dec 13, 2021 (2 updates tracked since 2021).

On this page

About Mark K Chang M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARK K CHANG M.D. (NPI 1871607507) is an individual orthopaedic surgery provider in Dyer, Indiana, licensed in Illinois (036095817) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Advocate Trinity Hospital, and is a graduate of Medical University Of South Carolina College Of Medicine (1990).

NPPES Registry Identity

NPI1871607507

Entity TypeIndividualMale

Primary Taxonomy207X00000X

Provider Legal NameMARK K CHANGCredential: M.D.

Location Address1100 JOLIET ST, STE 104Dyer, IN 46311-1996

Mailing Address1100 Joliet St, Ste 104Dyer, IN 46311-1996 · (219) 836-4955 · Fax (219) 865-2377

Phone(219) 836-4955

Fax(219) 865-2377

Sole ProprietorYes

Medical School CMSMedical University Of South Carolina College Of MedicineGraduated 1990

Enumeration DateAugust 19, 2006

Last NPPES UpdateFebruary 5, 20252 updates tracked since enumeration

NPPES CertifiedFebruary 5, 2025

✔ NPI 1871607507 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code207X00000X

Licenses✔ Licensed in IL · 036095817✔ Licensed in IN · 200033540A

Definition

An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.

1100 JOLIET ST, Dyer, IN 46311

Open in Google Maps ↗

Other Identifiers 3

Medicaid036095817IL

OtherP00419910Railroad Medicare

Medicaid200868870AIN

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mark K Chang M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4981651882

PECOS Enrollment IDI20050404000169, I20070702000136

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 21

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

441 services224 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

285 services206 patients

X-ray of lower and sacral spine, 2-3 views 72100

An X-ray of the lower and sacral spine involves capturing images of your lower back area, including the tailbone. This procedure helps in identifying problems like fractures, infections, or deformities. 2-3 different angle views provide a comprehensive picture.

276 services154 patients

Telephone medical discussion with physician, 5-10 minutes 99441

A telephone medical discussion with a physician is a brief, 5-10 minute call where you can discuss your health concerns. It's a convenient way to receive medical advice without needing to visit a clinic. It's important to prepare questions in advance to make the most of this time.

104 services39 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

78 services78 patients

X-ray of upper spine, 2-3 views 72040

An X-ray of the upper spine, with 2-3 views, is a painless procedure that employs a small amount of radiation to capture images of your neck and upper back. It assists in diagnosing conditions like arthritis, fractures, or spinal deformities.

70 services36 patients

New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more 99202

This service involves an initial visit to the doctor's office or other outpatient setting. It typically lasts between 15-29 minutes. The doctor will review your medical history, conduct a physical examination, and discuss your health concerns. It's a chance to establish your health baseline and address any immediate medical issues.

65 services65 patients

Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment 63047

This procedure involves removing part of a spine bone to alleviate pressure on the lower spinal cord and/or nerves. It targets a single segment of the spine, improving mobility and reducing pain. It's a common treatment for conditions like herniated discs or spinal stenosis.

49 services45 patients

Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221

Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.

40 services39 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

35 services21 patients

Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment 63048

This procedure involves the partial removal of a bone in your spine to alleviate pressure on your spinal cord or nerves. It may be performed on multiple spine segments depending on your condition. The aim is to improve mobility and reduce pain or discomfort.

32 services22 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

31 services29 patients

Placement of stabilizing device to back, 3-6 spine bone segments 22842

This procedure involves placing a device on your back to stabilize 3-6 spine bone segments. It aids in maintaining spine alignment and reducing pain. The device is secured to the bones, providing support and promoting healing.

30 services29 patients

Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional 99211

This service involves an outpatient visit for established patients who may not need direct interaction with a healthcare professional. It could include reviewing test results, monitoring existing conditions, or adjusting treatment plans. It's typically done remotely, ensuring your comfort and convenience.

29 services26 patients

Fusion of spine in lower back 22612

Fusion of the spine in the lower back, also known as lumbar spinal fusion, is a surgery aimed to join, or fuse, two or more vertebrae in your lower back. This procedure can help alleviate pain and improve stability by reducing movement between the vertebrae.

22 services20 patients

X-ray of middle spine, 2 views 72070

An X-ray of the middle spine, or thoracic spine, involves capturing two different images of the area. This non-invasive procedure uses small amounts of radiation to visualize the bones and tissues in your back, helping to identify any abnormalities or injuries.

19 services18 patients

Insertion of cage or mesh device to spine bone and disc space during spine fusion 22853

Spine fusion is a procedure to join two or more vertebrae. During this process, a cage or mesh device is inserted into the spine bone and disc space. This helps to stabilize the spine, reduce pain, and improve functionality. The device acts as a bridge for new bone to grow on.

18 services18 patients

Fusion of spine in lower back with partial removal of spine bone and disc 22633

This procedure, called lumbar spinal fusion, involves joining two or more vertebrae in your lower back. It includes a partial removal of a spine bone and disc to alleviate pain and improve stability. The goal is to reduce motion between vertebrae and prevent nerve irritation.

15 services15 patients

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 63052

This procedure involves the partial removal of a bone segment in your lower back to relieve pressure on your spinal cord or nerves. It's usually done during a spinal fusion in the lower back, which helps to stabilize your spine by joining two or more vertebrae together.

13 services13 patients

X-ray of pelvis, 1-2 views 72170

An X-ray of the pelvis, 1-2 views, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the lower part of your torso. These images help to detect any abnormalities or injuries in your hip bones and surrounding structures.

13 services12 patients

Removal of stabilizing device from back of spine 22850

The procedure involves the careful removal of a device from the back of your spine that was previously placed to provide stability. This is typically done under anesthesia and involves making a small incision to access and remove the device. The goal is to restore your spine's natural function while minimizing discomfort.

12 services11 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Advocate Trinity Hospital

Acute Care Hospitals · Chicago, IL

2/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number140048

Location2320 E 93rd StChicago, IL 60617 · Cook County

Emergency services Birthing friendly

Franciscan Health Olympia & Chicago Heights

Acute Care Hospitals · Olympia Fields, IL

2/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140172

Location20201 S Crawford AvenueOlympia Fields, IL 60461 · Cook County

Emergency services Birthing friendly

Ingalls Memorial Hospital

Acute Care Hospitals · Harvey, IL

2/5 CMS rating

OwnershipPhysician

CMS Certification Number140191

Location1 Ingalls DriveHarvey, IL 60426 · Cook County

Emergency services Birthing friendly

St Mary Medical Center Inc

Acute Care Hospitals · Hobart, IN

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number150034

Location1500 S Lake Park AveHobart, IN 46342 · Lake County

Emergency services Birthing friendly

Community Hospital

Acute Care Hospitals · Munster, IN

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number150125

Location901 Macarthur BlvdMunster, IN 46321 · Lake County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 46311 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$82.04 typical visit price

range $53.07 – $161.76

Typical copayment $20.51 (range $13.26 – $40.44)

Most-billed visit code 99203

Established Patient

$66.48 typical visit price

range $16.93 – $132.22

Typical copayment $16.62 (range $4.23 – $33.05)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

38.58/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

Promoting Interoperability

100

Improvement Activities

Cost

45.29

Referred Medical Equipment & Supplies CMS DME claims 4

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress E0260

DME-Hospital Beds · category DB000N

2 suppliers24 claims24 services$50.42 avg. paid by Medicare

Osteogenesis stimulator, electrical, non-invasive, spinal applications E0748

DME-Other DME · category DE000N

1 supplier17 claims17 services$3,752.02 avg. paid by Medicare

Cervical, collar, semi-rigid, thermoplastic foam, two piece with thoracic extension, prefabricated, off-the-shelf L0174

DME-Orthotic Devices · category DF000N

1 supplier15 claims15 services$196.05 avg. paid by Medicare

Lumbar-sacral orthosis, sagittal-coronal control, with rigid anterior and posterior frame/panel(s), posterior extends from sacrococcygeal junction to t-9 vertebra, lateral strength provided by rigid lateral frame/panel(s), produces intracavitary pressure to reduce load on intervertebral discs, includes straps, closures, may include padding, shoulder straps, pendulous abdomen design, prefabricated, off-the-shelf L0650

DME-Orthotic Devices · category DF007N

1 supplier39 claims39 services$423.42 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Leave this field empty

Other Providers at the Same Location NPPES 13

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MARK K CHANG MD

Orthopaedic Surgery (Orthopaedic Surgery of the Spine)

1100 JOLIET ST, STE 104
DYER, IN 46311

Lake County (219) 836-4955

MARK K CHANG MD

Orthopaedic Surgery (Orthopaedic Surgery of the Spine)

1100 JOLIET ST, SUITE 104
DYER, IN 46311

Lake County (219) 836-4955

ATHLETIC AND THERAPEUTIC INSTITUTE OF NAPERVILLE, LLC

Physical Therapist

1100 JOLIET ST, SUITE 205
DYER, IN 46311

Lake County (219) 864-3300

ROLAND SAUCIER

Physical Therapist

1100 JOLIET ST, 105
DYER, IN 46311

Lake County (219) 864-3300

SARAH K MARTINEZ DPT

Physical Therapist

1100 JOLIET ST, SUITE 105
DYER, IN 46311

Lake County (219) 864-3300

MBWOUDE, INC.

Physical Therapist

1100 JOLIET ST, SUITE 105
DYER, IN 46311

Lake County (219) 864-3300

TARA RAMESH PAI MSPT

Physical Therapist

1100 JOLIET ST, SUITE 205
DYER, IN 46311

Lake County (219) 864-3300

SIMA K SHAH DPT

Physical Therapist

1100 JOLIET ST, SUITE 205
DYER, IN 46311

Lake County (219) 864-3300

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Chang's NPI number?

The NPI number for Mark Chang is 1871607507. It was assigned to this individual provider in the NPPES registry on August 19, 2006.

Where is Mark Chang located?

Mark Chang practices at 1100 Joliet St Ste 104, Dyer, IN 46311. The listed phone number is (219) 836-4955.

What is Mark Chang's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Is Mark Chang enrolled in Medicare?

Yes. Mark Chang is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Mark Chang affiliated with any hospitals?

According to CMS data, Mark Chang is affiliated with Advocate Trinity Hospital, Franciscan Health Olympia & Chicago Heights, Ingalls Memorial Hospital, St Mary Medical Center Inc and Community Hospital.

When was this NPI record last updated?

The NPPES record for Mark Chang was last updated on February 5, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.