Sean Chang, M.D.
See where Sean Chang, M.D. ranks among 34 Diagnostic Radiology peers
The Physician Report shows Medicare work, payment, the comparison with similar practices and the trend across the data years.
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View sample reportWhat the Physician Report contains
Show details1 known limitation
Included
- Exact Medicare payment figures for each data year
- Calculated Medicare fee-for-service work RVUs for each data year
- Historical results for every data year with usable data
- Peer comparisons: rank, percentile and rank band among the same specialty, the peer medians, and where the physician falls in the peer distribution
- Beneficiaries, services, service mix and code-level lines
- A printable report with the data years, methodology and limitations
Not included
- Other physicians' figures and ranks
- The market's cohort table, percentile table and market trend (the Market Comparison)
- Peer comparison flags (professional subscription, not sold)
Known limitations
- CMS suppresses code lines with fewer than 11 beneficiaries, so calculated work RVUs are a floor.
Available data
- years in the data
- 5
- peers in the 2024 peer group
- 34
- a report can be prepared
- Yes
Data by year5 of 5 published
| Data year | In the CMS file | Usable for a report | Peer group for ranks |
|---|---|---|---|
| 2020 | Yes | Yes | metro peers, 38 |
| 2021 | Yes | Yes | metro peers, 36 |
| 2022 | Yes | Yes | metro peers, 35 |
| 2023 | Yes | Yes | metro peers, 36 |
| 2024 | Yes | Yes | metro peers, 34 |
Years Sean Chang, M.D. is in the CMS Medicare Physician & Other Practitioners files. Ranks use same-specialty peers in the first of the metro, the state and the nation with at least 20 peers. How ranks are computed · Limitations
Where Sean Chang, M.D. practices
- Credentials
- M.D.
- Specialty on claims
- Diagnostic Radiology
- Practice location on Medicare claims
- Oxnard, CAOxnard-Thousand Oaks-Ventura, CA metroStreet address not shown unless the clinician turns it on.
- Medicare participation
- Participating (accepts assignment on all claims)
- Years in the data
- 2020, 2021, 2022, 2023, 2024 (5 of 5 published)
Groups
- Allen Memorial Hospital Corporation
- Avera Mckennan
- Baptist Physician Network
- Camelot Radiology Associates Ltd
- Cheyenne Radiology Group
- Chickasaw Nation Division Of Health Chickasaw Nation Medical Center
- Columbus Regional Healthcare System
- Cumberland County Hospital System Inc
- Diagnostic Radiology Of Anderson PA
- Diagnostic Radiology PC
- Freeport Memorial Hospital
- Hannibal Regional Healthcare System Inc
- Holyoke Medical Center Inc
- Lima Radiological Associates
- Mahaska County Hospital
- Mcfarland Clinic PC
- Memorial Hospital Of Sheridan County
- Otero County Hospital Association
- Physicians Of Cape Cod Hospital
- Plains Radiology Services LLC
- Radiant Imaging Inc
- Radiology Consultants Of Iowa Plc
- Scotland Memorial Hospital, Inc
- Southeast Iowa Regional Medical Center Inc
- State University Of Iowa
Hospitals
- Cape Cod Hospital · Hyannis, MA
- Cape Fear Valley Medical Center · Fayetteville, NC
- Huntington Hospital · Pasadena, CA
- St Lukes Hospital · Cedar Rapids, IA
- University Of Iowa Health Care Medical Center Down · Iowa City, IA
Source: CMS Doctors and Clinicians files, snapshot 2026-10-02. May lag reality.
Practice location and specialty by year
Show details5 years
The practice location (Oxnard, CA) and specialty (Diagnostic Radiology) on the claims are the same in every year in the data.
| Data year | Practice location on Medicare claims | Area | Specialty on claims |
|---|---|---|---|
| 2020 | Oxnard, CA | Oxnard-Thousand Oaks-Ventura, CA | Diagnostic Radiology |
| 2021 | Oxnard, CA | Oxnard-Thousand Oaks-Ventura, CA | Diagnostic Radiology |
| 2022 | Oxnard, CA | Oxnard-Thousand Oaks-Ventura, CA | Diagnostic Radiology |
| 2023 | Oxnard, CA | Oxnard-Thousand Oaks-Ventura, CA | Diagnostic Radiology |
| 2024 | Oxnard, CA | Oxnard-Thousand Oaks-Ventura, CA | Diagnostic Radiology |
From the provider fields of each year's CMS Medicare Physician & Other Practitioners file (the location and specialty on the claims, as CMS publishes them).
Peer group a report would use
Show details34 peers
For 2024, a Physician Report would place Sean Chang, M.D. in a peer group of 34 Diagnostic Radiology clinicians, Sean Chang, M.D. included, at the metro level (Oxnard-Thousand Oaks-Ventura, CA).
Peers are clinicians with the same specialty on their claims, in the first of the metro area, the state and the nation that has enough of them. The sizes for every year are in the table under Available data.
Other Diagnostic Radiology clinicians in Oxnard
Show details5
Alphabetical by last name; all 5 whose practice location on Medicare claims is Oxnard in 2024. All Diagnostic Radiology clinicians in Oxnard
Related pages
Show details
- Diagnostic Radiology in Oxnard-Thousand Oaks-Ventura, CA
- Diagnostic Radiology in California
- Diagnostic Radiology in the United States
- All clinicians in Oxnard
- Oxnard-Thousand Oaks-Ventura, CA metro area
- California
- Allen Memorial Hospital Corporation (group)
- Avera Mckennan (group)
- Baptist Physician Network (group)
- Camelot Radiology Associates Ltd (group)
- Cheyenne Radiology Group (group)
- Cape Cod Hospital (hospital)
- Cape Fear Valley Medical Center (hospital)
- Huntington Hospital (hospital)
- St Lukes Hospital (hospital)
- University Of Iowa Health Care Medical Center Down (hospital)
- Methodology
About this data
Show details
This page comes from public files the Centers for Medicare & Medicaid Services publishes each year: the Medicare Physician & Other Practitioners files, which list the Part B services each clinician billed to Original Medicare, and the Doctors and Clinicians files, which list group and hospital affiliations. It covers Original Medicare fee-for-service only: Medicare Advantage, Medicaid and commercial insurance are not in these files, and CMS leaves out any service line with fewer than 11 beneficiaries. The location and specialty are what the claims show, and affiliations are as of the snapshot date, so either can lag a recent change. A listing here says nothing about quality of care.
How the data is processed · Known limitations · Report an error
Physicians can claim their page for notices and a statement. Claiming does not show figures; those are in a Physician Report.
Original Medicare Part B fee-for-service only. Payments go to the billing entity, not to the clinician. Limitations · Methodology