Margaret Sarah Helen Ferris, MD
Clinical Neurophysiology Physician · Stanford, CA
Margaret Sarah Helen Ferris, MD is a clinical neurophysiology physician with a practice address in Stanford, California, and NPI 1477917565, issued on Apr 5, 2016. Check the license (California A180872, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Margaret Sarah Helen Ferris
- Credential
- MD
- Primary taxonomy
- Clinical Neurophysiology Physician 2084N0600X
- License number
- A180872 CA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Pasteur Dr, Stanford, CA 94305
- Phone
- (650) 723-4000
- Enumerated
- Apr 5, 2016
- Record last updated
- Nov 13, 2023
- Medicare enrollment
- Enrolled (PECOS I20220906000577); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 2016
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest clinical neurophysiology physician records → All 71 in California → Look up another NPI →
Also registered at 300 Pasteur Dr
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Verify Margaret Sarah Helen Ferris in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A180872Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43% fewer Medicare Part D claims than the average clinical neurophysiology physician in 2024
899 Medicare Part D claims for 139 beneficiaries, against an average of 1,586 among the 319 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Carbidopa-Levodopa204 claims
- Clonazepam75 claims
- Carbidopa-Levodopa Er70 claims
- Rytary64 claims
- Amantadine46 claims
- Primidone39 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 76.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $529.23
4 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. The 260 providers of this specialty with any payment received $7,345.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
One hospital affiliation
- Stanford Health CareStanford, CA · Acute Care Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Margaret Sarah Helen Ferris among 71 clinical neurophysiology physician records in California
Margaret Sarah Helen Ferris, MD is one of 71 clinical neurophysiology physician records with a practice address in California. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 80% of them.
- NPI issued2016 · 80% of these records are older, 13% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2016 · median 2007 among the 49 with a school on file
- Record last updated2023 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0600X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Clinical Neurophysiology Physician providers in California
There are 71 clinical neurophysiology physician records in California.
All 71 in California → Every provider in Stanford → Clinical Neurophysiology Physician nationwide →
The 8 clinical neurophysiology physician records with the nearest ZIP codes
- Helen Bronte-Stewart, MDStanford, CA 943051295786804
- Sungho Cho, MDStanford, CA 943051932152360
- Safwan Jaradeh, MDStanford, CA 943051730130576
- Maya Katz, MDStanford, CA 943051427218304
- James Langston, MDStanford, CA 943051659306371
- Leslie Lee, M.D.Stanford, CA 943051932115219
- Christopher Lock, MDStanford, CA 943051427205061
- Jaime Lopez, MDStanford, CA 943051033288014
Common questions
What is Margaret Sarah Helen Ferris, MD's NPI number?
Margaret Sarah Helen Ferris, MD's National Provider Identifier (NPI) is 1477917565, issued on Apr 5, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Sarah Helen Ferris, MD located?
The NPPES record lists a practice address at 300 Pasteur Dr, Stanford, CA, 94305. Phone: (650) 723-4000. Providers update this record themselves, so call before visiting.
How can I verify Margaret Sarah Helen Ferris, MD's license?
NPPES lists California license number A180872, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Margaret Sarah Helen Ferris, MD prescribe under Medicare Part D?
In 2024, Margaret Sarah Helen Ferris, MD had 899 Medicare Part D claims for 139 beneficiaries; the average among clinical neurophysiology physician prescribers was 1,586. Part D covers Medicare prescriptions only.
What is Margaret Sarah Helen Ferris, MD's MIPS final score?
The 2023 MIPS final score is 76.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.