Dr. Andrew Chang, M.D.
What this data tells you about Dr. Chang
Dr. Andrew Chang is a radiology - diagnostic specialist in San Diego, CA, with 18 years of NPI registration. Based on federal Medicare data, Dr. Chang performed 2,068 Medicare services across 565 unique beneficiaries.
Between the years covered by Open Payments, Dr. Chang received a total of $8,079 from 12 pharmaceutical and/or device companies across 18 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in radiology - diagnostic. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. 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 |
|---|---|---|---|
| CT guidance for radiation therapy This procedure uses computed tomography imaging to guide the precise placement of radiation therapy fields. It ensures accurate positioning for targeted treatment delivery. |
711 | $92 | $470 |
| Radiation therapy, 3+ areas, 6-10 MeV Radiation treatment delivered to three or more separate areas using advanced techniques like custom blocking and rotational beams with an energy level of 6-10 MeV. |
334 | $165 | $831 |
| Intensity-modulated radiation therapy delivery Delivery of radiation therapy using narrow beams that are spatially and temporally modulated to target specific areas. This process is performed per treatment session. |
247 | $253 | $1,210 |
| Continuing radiation therapy consultation per week A weekly consultation to review and manage ongoing radiation therapy treatment. |
148 | $66 | $357 |
| Complex proton beam radiation treatment A specialized form of radiation therapy that uses protons to deliver precise doses of energy to target tissues. This technique is designed to minimize exposure to surrounding healthy organs. |
124 | $1,032 | $6,348 |
| Radiation treatment management, 5 sessions Oversight and management of a radiation therapy course consisting of five treatment sessions. |
119 | $145 | $679 |
| Design and construction of complex radiation treatment device This code covers the design and construction of a complex radiation treatment device. It does not specify the clinical purpose or conditions treated. |
99 | $90 | $525 |
| Stereoscopic X-ray guidance for radiation therapy localization This procedure uses stereoscopic X-ray imaging to precisely locate the target area for radiation therapy delivery. |
88 | $62 | $360 |
| Intermediate proton beam radiation treatment A radiation therapy procedure using proton beams to treat a specific area of the body. This method delivers targeted energy to destroy abnormal cells while minimizing exposure to surrounding healthy tissue. |
85 | $912 | $5,622 |
| Complex radiation therapy planning | 32 | $125 | $587 |
| Radiation treatment planning, 1 area This procedure involves gathering the necessary data to design the most effective radiation therapy plan for a single treatment area. |
22 | $192 | $919 |
| High precision radiation therapy planning This procedure involves the detailed planning and setup required for delivering high-precision radiation therapy to a target area of the body. |
22 | $1,421 | $7,727 |
| Radiation treatment planning, complex This procedure involves obtaining the necessary data to develop an optimal radiation treatment plan for three or more treatment areas, or any number of areas requiring special treatment. |
20 | $323 | $1,596 |
| Design and construction of radiation treatment device This code covers the design and construction of a device used for high precision radiation therapy. It does not include the actual administration of radiation treatment. |
17 | $339 | $1,569 |
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 ›
Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
2.4 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 low-engagement industry engagement in the top 11% of CA peers, with 18 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Chang experienced with ct guidance for radiation therapy?
Does Dr. Chang receive payments from pharmaceutical companies?
How do Dr. Chang's costs compare to other radiology - diagnostics in San Diego?
What does Data Coverage mean?
Is this data up to date?
Explore related providers
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.
Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology