Dr. Felix Chang, MD
What this data tells you about Dr. Chang
Dr. Felix Chang is a neurology specialist in Stanford, CA, with 10 years of NPI registration. Based on federal Medicare data, Dr. Chang performed 1,772 Medicare services across 387 unique beneficiaries.
Between the years covered by Open Payments, Dr. Chang received a total of $974 from 3 pharmaceutical and/or device companies across 9 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in neurology. 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 |
|---|---|---|---|
| Continuous intraoperative neurophysiology monitoring, remote Remote monitoring of nerve and brain function during surgery, billed in 15-minute increments. |
1,153 | $30 | $543 |
| Intraoperative nervous system monitoring, per 15 minutes Continuous monitoring of the nervous system during a surgical procedure. This service is billed for each 15-minute interval of monitoring. |
284 | $30 | $199 |
| Placement of skin electrodes and measurement of stimulated sites on arms and legs This procedure involves placing skin electrodes and measuring stimulated sites on the arms and legs. |
84 | $42 | $337 |
| Central motor stimulation test of arms and legs This procedure involves placing skin electrodes on the body to measure how the central nervous system stimulates the muscles in the arms and legs. |
81 | $110 | $736 |
| Needle measurement of electrical activity in muscle with injection of chemical for paralysis of nerve muscle | 54 | $17 | $270 |
| Electromyography of 2 extremities A test that measures the electrical activity in the muscles of two arms or legs. It helps evaluate nerve and muscle function. |
49 | $76 | $1,262 |
| Chemical nerve block injection, 1-4 muscles An injection of a chemical agent to paralyze specific muscles in an arm or leg. This procedure targets one to four muscles in the first extremity treated. |
28 | $82 | $194 |
| Injection of chemical for paralysis of nerve muscles on arm or leg, 1-4 muscles, each additional extremity | 21 | $63 | $636 |
| EEG monitoring for coma or sleep This procedure measures brain wave activity to monitor patients who are in a coma or asleep. |
18 | $53 | $443 |
Industry Payment Transparency
Open Payments through 2023 ↗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 (2023)
All-time payments by company (2022-2023) ›
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 2023 |
| 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 remote monitoring specialist, with above-average Medicare volume (top 22% in CA), with low-engagement industry engagement.
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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