MARK K CHANG M.D.
NPI 1871607507
Orthopaedic Surgery in Dyer, IN
Quality Rating: 38.58 out of 100 score
NPI Status: Active since August 19, 2006
Contact Information
1100 JOLIET ST
STE 104
DYER, IN
ZIP 46311
Phone: (219) 836-4955
Fax: (219) 865-2377
- NPI Profile Information
- Primary Taxonomy
- Secondary Taxonomies
- Insurance Plans Accepted
- Medicare Participation & PECOS Status
- Areas of Expertise
- Durable Medical Equipment
- Physician Visit Costs
- Overall Quality Performance
- Hospital Affiliations - Privileges
- NPI Validation
- Other Providers Same Location
- Frequently Asked Questions
- Individual
- Male
- Years of Experience 36
- Orthopaedic Surgery
- Accepts Medicare Approved Payment
- PECOS Enrolled
About MARK CHANG
This page provides the complete NPI Profile along with additional information for Mark Chang, a provider established in Dyer, Indiana with a medical specialization in Orthopaedic Surgery and more than 36 years of experience. He graduated from Medical University Of South Carolina College Of Medicine in 1990. The healthcare provider is registered in the NPI registry with number 1871607507 assigned on August 2006. The practitioner's primary taxonomy code is 207X00000X with license number 036095817 (IL). The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1871607507
- Provider Name
- MARK K CHANG M.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 1100 JOLIET ST STE 104 DYER, IN 46311
- Location Phone
- (219) 836-4955
- Location Fax
- (219) 865-2377
- Mailing Address
- 1100 JOLIET ST STE 104 DYER, IN 46311
- Mailing Phone
- (219) 836-4955
- Mailing Fax
- (219) 865-2377
- Medical School Name
- MEDICAL UNIVERSITY OF SOUTH CAROLINA COLLEGE OF MEDICINE
- Graduation Year
- 1990
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 08-19-2006
- Last Update Date
- 02-05-2025
- Code Navigator
Location Map
Specialty - Primary Taxonomy
The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.
- Classification
Orthopaedic Surgery
- Taxonomy Code
- 207X00000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 036095817
- License State
- IL
- Taxonomy Description
- 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.
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 207X00000X | Allopathic & Osteopathic Physicians | Orthopaedic Surgery | 200033540A (IN) |
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
*Please verify directly with this provider to make sure your insurance plan is currently accepted.
Additional Identifiers
The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.
| Identifier | Type / Code | Identifier State | Identifier Issuer |
|---|---|---|---|
| 036095817 | MEDICAID (05) | IL | |
| P00419910 | OTHER (01) | RAILROAD MEDICARE | |
| 200868870A | MEDICAID (05) | IN |
Medicare Participation & PECOS Enrollment Status
Mark Chang is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.
Mark Chang is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.
What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.
Is the provider registered in PECOS? Yes
PECOS PAC ID: 4981651882
What is the PECOS Associate Control ID?
A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.PECOS Enrollment ID: I20050404000169, I20070702000136
What is the Provider Enrollment ID?
The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.Accepts Medicare Assignment? Yes
What does it mean "accepts medicare assignment"?
When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes
Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes
Eligible to Order or Refer a Home Health Agency (HHA): Yes
Eligible to Order or Refer Power Mobility Devices: Yes
Provider Referred Orders for Durable Medical Equipment, Devices & Supplies
The following list reflects the services, supplies or durable medical equipment ordered by this provider to a DME supplier on behalf of patients. The information below is derived from Medicare claims data and reflects the BETOS category, HCPCS code information and the number times each service was submitted under the Medicare fee-for-service program.
Durable Medical Equipment
DME-Hospital Beds (DB000N)
Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress (HCPCS:E0260)
2 DME suppliers used 24 Medicare Claims 24 Services Paid
DME-Other DME (DE000N)
Osteogenesis stimulator, electrical, non-invasive, spinal applications (HCPCS:E0748)
1 DME suppliers used 17 Medicare Claims 17 Services Paid
Orthotic Devices
DME-Orthotic Devices (DF000N)
Cervical, collar, semi-rigid, thermoplastic foam, two piece with thoracic extension, prefabricated, off-the-shelf (HCPCS:L0174)
1 DME suppliers used 15 Medicare Claims 15 Services Paid
DME-Orthotic Devices (DF007N)
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 (HCPCS:L0650)
1 DME suppliers used 39 Medicare Claims 39 Services Paid
Areas of Expertise
The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.
Established patient office or other outpatient visit, 10-19 minutes
Established patient office or other outpatient visit, 20-29 minutes
Follow-up hospital inpatient care per day, typically 15 minutes
Fusion of additional segment of spine
Fusion of spine in lower back
Fusion of spine in lower back with partial removal of spine bone and disc
Graft of donor bone to spine
Initial hospital inpatient care per day, typically 30 minutes
Insertion of cage or mesh device to spine bone and disc space during spine fusion
Laminectomy or laminotomy (partial removal of spine bones)
New patient office or other outpatient visit, 15-29 minutes
New patient office or other outpatient visit, 30-44 minutes
Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional
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
Placement of stabilizing device to back of 1 spine bone in neck
Placement of stabilizing device to back, 3-6 spine bone segments
Removal of stabilizing device from back of spine
Spinal fusion
Telephone medical discussion with physician, 5-10 minutes
Treatment of broken lower spine bone with placement of stabilizing device
X-ray of lower and sacral spine, 2-3 views
X-ray of middle spine, 2 views
X-ray of pelvis, 1-2 views
X-ray of upper spine, 2-3 views
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.
This service was performed 454 times for 249 patientsThis 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.
This service was performed 253 times for 182 patientsFollow-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.
This service was performed 33 times for 20 patientsFusion of an additional segment of the spine is a surgical procedure to join two or more vertebrae together. This is done to stabilize the spine and reduce pain or correct a deformity. The procedure involves using bone grafts, rods, or screws to secure the spine.
This service was performed 20 times for 11 patientsFusion 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.
This service was performed 15 times for 15 patientsThis 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.
This service was performed 24 times for 24 patientsA graft of donor bone to the spine is a procedure where a piece of bone from a donor is attached to your spine to help it heal or improve its structure. This is often done to strengthen the spine or aid in recovery from injury or disease.
This service was performed 34 times for 34 patientsInitial 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.
This service was performed 27 times for 24 patientsSpine 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.
This service was performed 18 times for 18 patientsA laminectomy or laminotomy is a surgical procedure that involves removing part of the bone in your spine, specifically the lamina, to alleviate pressure on your spinal cord or nerves. This can help reduce pain and improve mobility if you're suffering from conditions like herniated discs or spinal stenosis.
This service was performed for 128 patientsThis 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.
This service was performed 71 times for 71 patientsThis 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.
This service was performed 84 times for 84 patientsThis 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.
This service was performed 52 times for 52 patientsThis 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.
This service was performed 66 times for 62 patientsThis 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.
This service was performed 49 times for 35 patientsThis procedure involves positioning a stabilizing device onto a single spinal bone in the neck. The goal is to provide support and prevent movement that could cause discomfort or further injury. It's performed by trained specialists under anesthesia.
This service was performed 14 times for 14 patientsThis 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.
This service was performed 29 times for 29 patientsThe 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.
This service was performed 13 times for 13 patientsSpinal fusion is a surgical procedure aimed at connecting two or more vertebrae in your spine to reduce pain and improve stability. It involves using a bone graft to cause the vertebrae to grow together, limiting the movement between them. This procedure is often performed to treat conditions like herniated discs or spinal stenosis.
This service was performed for 71 patientsA 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.
This service was performed 125 times for 52 patientsThis procedure involves fixing a broken bone in the lower spine. A stabilizing device is inserted to support the bone, promoting healing and reducing pain. The device helps to maintain proper spinal alignment and stability during your recovery period.
This service was performed 11 times for 11 patientsAn 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.
This service was performed 285 times for 163 patientsAn 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.
This service was performed 20 times for 14 patientsAn 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.
This service was performed 15 times for 13 patientsAn 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.
This service was performed 102 times for 46 patientsPhysician Visit Costs
The typical physician office visit costs for Medicare beneficiaries in this area are: $20.51 for a new patient copayment and $16.62 for an established patient copayment.
The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.
For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.
The prices below reflect the costs for new and established patients in the 46311 ZIP code area.
New Patients Visit Costs *
The most utilized procedure code for new patients office visits is 99203
- Average New Patient Price $82.04
- Minimum New Patient Price $53.07
- Maximum New Patient Price $161.76
- Average New Patient Copayment $20.51
- Minimum New Patient Copayment $13.26
- Maximum New Patient Copayment $40.44
Established Patients Visit Costs *
The most utilized procedure code for established patients office visits is 99213
- Average Established Patient Price $66.48
- Minimum Established Patient Price $16.93
- Maximum Established Patient Price $132.22
- Average Established Patient Copayment $16.62
- Minimum Established Patient Copayment $4.23
- Maximum Established Patient Copayment $33.05
* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.
Overall MIPS Quality Performance
The provider participated in CMS Quality Payment Program under the Merit-based Incentive Payment System (MIPS) and has an overall final score of 38.58, based on four performance areas: quality, improvement activities, promoting interoperability, and cost. The purpose of this information is to help people with Medicare make informed decisions and incentivize doctors and clinicians to maximize performance.
The Merit-based Incentive Payment System (MIPS) is a way providers could use to participate in CMS Quality Payment Program (QPP). The MIPS program affects clinician reimbursement for Part B covered professional services and also rewards them for improving the quality of patient care and outcomes.
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Final Score: 38.58 out of 100
The MIPS program evaluates providers across multiple categories with a specific weight for each category resulting a in a MIPS final score that ranges from 0 to 100 points. The MIPS Final Score determines whether providers receive a negative, neutral or positive MIPS payment adjustment.
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Quality Score: 0
The Quality category assesses providers performance on clinical practices and patient outcomes under the traditional MIPS program. The quality measures help identify the quality of healthcare processes, outcomes, and patient experiences. The Quality measure category compromises 40% providers final MPIS scores.
There are six collection types for MIPS quality measures: Electronic Clinical Quality Measures (eCQMs), MIPS Clinical Quality Measures (CQMs), Qualified Clinical Data Registry (QCDR) Measures, Medicare Part B claims measures, CMS Web Interface measures and The Consumer Assessment of Healthcare Providers and Systems (CAHPS) for MIPS Survey.
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Promoting Interoperability Score: 100
The Interoperability category measures the providers ability to use technology to exchange and make use of healthcare information in a way that is less burdensome and improves outcomes. The Interoperability measure category compromises 25% providers final MPIS scores.
The MIPS Interoperability measure focuses on the use of certified electronic health record technology (CEHRT) to improve patient access health information, the exchange of information between clinicians and pharmacies and the systematic collection, analysis, and interpretation of healthcare data. -
Improvement Activities Score: 0
The Improvement Activities performance category evaluates the providers participation in clinical activities that support the improvement of clinical practice, care delivery, and outcomes. Providers have the option to choose 2 to 4 activities from an inventory of over 100 improvement activities. Providers typically choose the activities that best fit their needs. The improvement activities measure category compromises 15% providers final MPIS scores.
The Improvement measures aim to better patient engagement, patient safety and other areas of patient care. The Improvement Activities category compromises 15% of providers final MPIS scores. -
Cost Score: 45.29
The Cost performance category asses the amount and types of services provided and how clinicians coordinate care and seek improvement of health outcomes by ensuring patients receive the appropriate services.
Although providers don't determine the price of healthcare services they are important in delivering high-quality care at a reasonable cost. The Cost measures category compromises 20% of providers final MPIS scores. -
Cost Score: 45.29
The Cost performance category asses the amount and types of services provided and how clinicians coordinate care and seek improvement of health outcomes by ensuring patients receive the appropriate services.
Although providers don't determine the price of healthcare services they are important in delivering high-quality care at a reasonable cost. The Cost measures category compromises 20% of providers final MPIS scores.
Find Provider Hospital Affiliations - Privileges
Doctors and physicians must apply for hospital privileges to treat patients at hospitals. Find out if your doctor has privileges to practice at your preferred hospital by using the hospital affiliation information below based on recent medical claims.
Hospital affiliation is identified through self-reporting data, inpatient, outpatient, physician and ancillary service claims linked by the medical claims NPI number and place of service code. Additionally, to further determine provider hospital affiliation the clinician must have provided services to at least three patients on three different dates in the last 12 months. Mark Chang is affiliated with the following medical facilities:
| Hospital Name | Address | Phone | Hospital Type | Overall Rating |
|---|---|---|---|---|
| ADVOCATE TRINITY HOSPITAL | 2320 E 93RD ST CHICAGO, IL 60617 | (773) 967-5002 | Acute Care Hospitals | |
| FRANCISCAN HEALTH OLYMPIA & CHICAGO HEIGHTS | 20201 S CRAWFORD AVENUE OLYMPIA FIELDS, IL 60461 | (708) 747-4000 | Acute Care Hospitals | |
| ADVOCATE CHRIST HOSPITAL & MEDICAL CENTER | 4440 W 95TH STREET OAK LAWN, IL 60453 | (708) 684-8000 | Acute Care Hospitals | |
| ST MARY MEDICAL CENTER INC | 1500 S LAKE PARK AVE HOBART, IN 46342 | (219) 942-0551 | Acute Care Hospitals | |
| COMMUNITY HOSPITAL | 901 MACARTHUR BLVD MUNSTER, IN 46321 | (219) 836-1600 | Acute Care Hospitals |
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NPI NPI Number Validation
How NPI Validation Works
The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.
To verify the NPI 1871607507, we treat the final digit (7) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 53. The final step is to find the difference between that total and the next multiple of ten (60 - 53 = 7).
Digit-by-digit view
Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.
Step 1: Double every other digit from the right
Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 53 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 13 providers are registered at the same or a nearby location.
DYER, IN 46311
DYER, IN 46311
DYER, IN 46311
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1871607507, enumerated as an "individual" on August 19, 2006.
The provider is located at 1100 JOLIET ST STE 104 DYER, IN 46311 and the phone number is (219) 836-4955.
Orthopaedic Surgery with taxonomy code 207X00000X.
The provider might be accepting Accepts: Medicare, Medicaid and Railroad Medicare. Please consult your insurance carrier or call the provider to verify.
Mark Chang is affiliated with: ADVOCATE TRINITY HOSPITAL, FRANCISCAN HEALTH OLYMPIA & CHICAGO HEIGHTS, ADVOCATE CHRIST HOSPITAL & MEDICAL CENTER, ST MARY MEDICAL CENTER INC and COMMUNITY HOSPITAL.