Dr. Anthony Chang, MD
What this data tells you about Dr. Chang
Dr. Anthony Chang is a pathology - anatomic specialist in Burr Ridge, IL, with 19 years of NPI registration. Based on federal Medicare data, Dr. Chang performed 475 Medicare services across 244 unique beneficiaries.
Between the years covered by Open Payments, Dr. Chang received a total of $544,351 from 13 pharmaceutical and/or device companies across 770 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in pathology - anatomic. The majority of payments are for speaking programs and promotional activities, reflecting participation in industry-sponsored events. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Chang is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
Medicare Practice Summary
Medicare Utilization ↗Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Additional antibody stain test An additional laboratory test using a single antibody stain to evaluate specific markers. |
178 | $23 | $203 |
| Special tissue stain and interpretation A laboratory test using special stains to examine tissue samples, including the pathologist's review and written report of the findings. |
130 | $10 | $88 |
| Tissue pathology examination, moderate complexity A laboratory test where a pathologist examines tissue samples under a microscope to analyze cellular details. This intermediate complexity procedure involves specialized techniques to identify abnormalities in the tissue. |
80 | $30 | $280 |
| Initial single antibody stain evaluation A laboratory test that uses a single antibody stain to evaluate specific proteins or markers in a sample. |
56 | $29 | $270 |
| Electron microscopy for diagnosis A laboratory test that uses an electron microscope to examine tissue or cell samples at a very high magnification for diagnostic purposes. |
19 | $62 | $558 |
| Tissue staining for diagnosis, initial A laboratory test where special stains are applied to tissue slides to help examine the cells and identify specific characteristics. |
12 | $28 | $265 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
All-time payments by company (2018-2024) ›
Associated products mentioned in payments ›
The majority of payments (90%) are for speaking programs and promotional activities, which reflect participation in industry-sponsored educational or marketing events. This is common in pathology - anatomic and does not inherently indicate bias, but patients may wish to be aware. Total industry engagement is in the top 0% for pathology - anatomic in IL.
Geographic Context
4.0 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Chang is a mixed practice specialist, with moderate Medicare volume, with speaking/promotional industry engagement in the top 0% of IL peers, with 19 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
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All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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