Dr. Margaret Ferris, MD
What this data tells you about Dr. Ferris
Dr. Margaret Ferris is a neurology specialist in Stanford, CA, with 10 years of NPI registration. Based on federal Medicare data, Dr. Ferris performed 561 Medicare services across 317 unique beneficiaries.
Between the years covered by Open Payments, Dr. Ferris received a total of $1,546 from 5 pharmaceutical and/or device companies across 14 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. Ferris 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 |
|---|---|---|---|
| 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. |
174 | $116 | $366 |
| 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. |
90 | $81 | $399 |
| Needle measurement of electrical activity in muscle with injection of chemical for paralysis of nerve muscle | 75 | $16 | $268 |
| Chemical nerve block for neck muscles Injection of a chemical agent to paralyze specific muscles on the side of the neck, excluding the voice box. |
44 | $118 | $795 |
| 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. |
35 | $80 | $191 |
| Injection of chemical for paralysis of nerve muscles on arm or leg, 1-4 muscles, each additional extremity | 30 | $55 | $636 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
28 | $51 | $315 |
| Brain stimulator programming, first 15 minutes Electronic analysis of an implanted brain, spinal cord, or peripheral neurostimulator generator. This service includes programming the brain stimulator by a qualified health professional for the first 15 minutes. |
25 | $44 | $210 |
| Additional hour of EEG monitoring This code covers each additional hour of electroencephalogram monitoring used to provoke seizures or identify brain structures. |
24 | $156 | $1,010 |
| EEG with seizure provocation, first hour This procedure measures brain wave activity using electrodes placed on the scalp. It is performed to provoke seizures or identify specific brain structures during the first hour of the test. |
18 | $144 | $1,185 |
| New patient office visit, complex (60-74 min) | 18 | $163 | $254 |
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 (2022-2024) ›
Associated products mentioned in payments ›
Most payments (67%) 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. Ferris is a clinical cardiology specialist, with moderate Medicare volume, 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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Does Dr. Ferris receive payments from pharmaceutical companies?
How do Dr. Ferris's costs compare to other neurologists in Stanford?
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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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