Dr. Steven Chang, MD
What this data tells you about Dr. Chang
Dr. Steven Chang is a neurological surgery specialist in Stanford, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Chang performed 736 Medicare services across 536 unique beneficiaries.
Between the years covered by Open Payments, Dr. Chang received a total of $747 from 3 pharmaceutical and/or device companies across 3 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in neurological surgery. 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 |
|---|---|---|---|
| Computer-assisted radiosurgery for additional brain growth This procedure involves using computer-guided radiation to treat an additional simple growth in the brain during a radiosurgery session. |
126 | $184 | $1,963 |
| Hospital follow-up visit, high complexity Subsequent hospital inpatient or observation care for an existing patient involving high-level medical decision making, with at least 50 minutes total time on the date of the encounter. |
91 | $110 | $372 |
| New patient office visit, complex (60-74 min) | 90 | $164 | $615 |
| Computer-assisted radiosurgery for first brain growth This procedure uses computer-guided radiation to treat the first identified simple growth in the brain. |
67 | $898 | $7,320 |
| Initial hospital admission, high complexity Initial hospital inpatient or observation care for a new patient involving high-level medical decision making, with at least 75 minutes total time on the date of the encounter. |
65 | $160 | $757 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
62 | $133 | $727 |
| Computer-assisted radiosurgery of spine growth, first lesion A non-invasive procedure using computer-guided radiation to treat a growth on the spine. This code specifically covers the treatment of the first identified growth. |
43 | $999 | $3,842 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
40 | $88 | $523 |
| Use of operating microscope Use of a specialized microscope during a surgical procedure to provide magnified visualization of the surgical site. |
32 | $183 | $1,061 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
26 | $111 | $440 |
| Computer-assisted radiosurgery of spine growth, each additional growth This procedure uses computer-guided radiation to treat additional spinal growths during a radiosurgery session. |
24 | $212 | $810 |
| Computer-assisted radiosurgery of brain, first growth A non-invasive procedure using computer-guided radiation to treat a single brain growth. It targets the lesion with high precision without surgical incision. |
21 | $1,176 | $7,320 |
| Hospital discharge management, 30+ min This service covers the care provided by a physician or qualified healthcare professional on the day a patient is discharged from the hospital. It requires more than 30 minutes of total time spent on the day of discharge. |
20 | $107 | $438 |
| Computer-assisted brain procedure A surgical or diagnostic procedure performed within the brain using computer technology to assist with precision and guidance. |
16 | $198 | $997 |
| New patient office visit (30-44 min) An initial office visit for a new patient lasting between 30 and 44 minutes. This code is used when the total time spent on the date of the encounter falls within this range. |
13 | $70 | $145 |
Industry Payment Transparency
Open Payments through 2021 ↗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 (2021)
All-time payments by company (2018-2021) ›
Associated products mentioned in payments ›
The majority of payments (67%) are for speaking programs and promotional activities, which reflect participation in industry-sponsored educational or marketing events. This is common in neurological surgery and does not inherently indicate bias, but patients may wish to be aware.
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 2021 |
| 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 surgery specialist, with above-average Medicare volume (top 14% in CA), with speaking/promotional industry engagement, 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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