NPPES file of Aug 9, 2026

William Elliot Rosenfeld, M.D.

Neurology Physician · Chesterfield, MO

William Elliot Rosenfeld, M.D. is a neurology physician with a practice address in Chesterfield, Missouri, and NPI 1851413587, issued on Apr 4, 2007. Check the license (Missouri MDR9G50, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1851413587
Name
William Elliot Rosenfeld
Credential
M.D.
Primary taxonomy
Neurology Physician 2084N0400X
License number
MDR9G50 MO
Self-reported in NPPES; status is on the state search
Practice location
222 S Woods Mill RD, Chesterfield, MO 63017
Phone
(314) 453-9300
Enumerated
Apr 4, 2007
Record last updated
May 16, 2008 (not updated in 18 years: call before relying on the address or phone)
Medicaid ID
202431011 MO
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 222 S Woods Mill RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Nadya Ajanee, M.D.Internal Medicine Physician1639284276
  2. Afshin Amini, MDInternal Medicine Physician1871086090
  3. Venkat Arukala, M.D.Internal Medicine Physician1205210887
  4. Richard Bell, MDSpecialist1780679373
  5. John Best, MDPulmonary Disease Physician1053429977
  6. Ronald Bilchik, M.D.Specialist1992740435

Verify William Elliot Rosenfeld in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
    Search for license MDR9G50
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Missouri license search

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99% fewer Medicare Part D claims than the average neurology physician in 2024

17 Medicare Part D claims, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. William Rosenfeld17
  2. Specialty average1,370

Most prescribed

  1. Levetiracetam13 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.

Industry payments in 2024: $280,489.67

46 payments; by number, the most common kind was consulting fee; the largest payer was SK Life Science, Inc. The 10,858 providers of this specialty with any payment received $8,318.07 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. William Rosenfeld$280,490
  2. Specialty average$8,318

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

William Elliot Rosenfeld among 484 neurology physician records in Missouri

William Elliot Rosenfeld, M.D. is one of 484 neurology physician records with a practice address in Missouri. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 33% of them.

  • NPI issued2007 · 33% of these records are older, 57% newer
  • In a Medicare fileYes · 78% of these records are
  • In the CMS Doctors and Clinicians fileNo · 59% of these records are
  • Record last updated2008 · 36% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Neurology Physician providers in Missouri

There are 484 neurology physician records in Missouri.

The 8 neurology physician records with the nearest ZIP codes

  1. Zaheer Ahmed, M.D.Chesterfield, MO 630171558328401
  2. Max Benzaquen, MDChesterfield, MO 630171366426900
  3. Leah Brancheck, M.D.Chesterfield, MO 630171255747119
  4. Frasat Chaudhry, M.D.Chesterfield, MO 630171073772604
  5. Ayman DaoudChesterfield, MO 630171487013512
  6. Emily Evans, MDChesterfield, MO 630171710326939
  7. Susan Lippmann, M.D.Chesterfield, MO 630171295857936
  8. Patti Nemeth, M.D.Chesterfield, MO 630171144284225

Common questions

What is William Elliot Rosenfeld, M.D.'s NPI number?

William Elliot Rosenfeld, M.D.'s National Provider Identifier (NPI) is 1851413587, issued on Apr 4, 2007. An NPI identifies a provider in billing; it is not a license.

Where is William Elliot Rosenfeld, M.D. located?

The NPPES record lists a practice address at 222 S Woods Mill RD, Chesterfield, MO, 63017. Phone: (314) 453-9300. Providers update this record themselves, so call before visiting.

How can I verify William Elliot Rosenfeld, M.D.'s license?

NPPES lists Missouri license number MDR9G50, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does William Elliot Rosenfeld, M.D. prescribe under Medicare Part D?

In 2024, William Elliot Rosenfeld, M.D. had 17 Medicare Part D claims; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.

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.