Dr. Tien-Yu Chang, M.D.
What this data tells you about Dr. Chang
Dr. Tien-Yu Chang is an anesthesiology specialist in Panorama City, CA, with 18 years of NPI registration. Based on federal Medicare data, Dr. Chang performed 216 Medicare services across 214 unique beneficiaries.
Between the years covered by Open Payments, Dr. Chang received a total of $1,335 from 10 pharmaceutical and/or device companies across 29 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in anesthesiology. 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 |
|---|---|---|---|
| Anesthesia for total knee replacement Administration of anesthesia during a total knee joint replacement procedure. |
44 | $329 | $2,432 |
| Anesthesia for total hip replacement Administration of anesthesia during a total hip replacement surgery. This code covers the anesthetic services provided for the procedure. |
42 | $324 | $2,491 |
| Continuous infusion of anesthetic agent and/or steroid into thigh nerve (femoral nerve) through catheter | 34 | $58 | $1,500 |
| Anesthesia for endoscopic procedure on esophagus, stomach, or upper small bowel Administration of anesthesia during an endoscopic procedure involving the esophagus, stomach, or upper small bowel. |
19 | $150 | $1,204 |
| Femoral nerve injection with anesthetic and/or steroid An injection of an anesthetic agent and/or steroid into the femoral nerve in the thigh. This procedure delivers medication directly to the nerve. |
19 | $52 | $875 |
| Anesthesia for extensive spine surgery Administration of anesthesia during major surgical procedures involving the spine. |
15 | $523 | $3,983 |
| Anesthesia for spine injection or aspiration with imaging This code covers the administration of anesthesia for injection, drainage, or aspiration procedures on the lower back spine or spinal cord. The procedure is performed through the skin using imaging guidance. |
15 | $98 | $758 |
| Anesthesia for upper abdomen procedure Administration of anesthesia for surgical procedures performed on the upper abdomen. |
14 | $353 | $2,661 |
| Hospital follow-up visit, low complexity Follow-up hospital visit for an established patient with straightforward or low-level medical decision making. The visit requires at least 25 minutes of time spent on the day of service. |
14 | $41 | $250 |
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
0.0 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 cardiac & interventional specialist, with above-average Medicare volume (top 25% in CA), with low-engagement industry engagement in the top 13% 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
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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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