Brian Keith Day, MD
Epilepsy Physician · Saint Louis, MO
Brian Keith Day, MD is an epilepsy physician with a practice address in Saint Louis, Missouri, and NPI 1992996219, issued on Aug 5, 2007. Check the license (Missouri 2011017274, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Brian Keith Day
- Credential
- MD
- Primary taxonomy
- Epilepsy Physician 2084E0001X
- License number
- 2011017274 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110
- Phone
- (314) 362-1408
- Enumerated
- Aug 5, 2007
- Record last updated
- Apr 17, 2025
- Fax
- (314) 362-0296
- Medicaid ID
- 209590108 MO
- Medicare enrollment
- Enrolled (PECOS I20120621000715); accepts Medicare assignment
- Medical or professional school
- University Of Kentucky College Of Medicine, 2007
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest epilepsy physician records → All 31 in Missouri → Look up another NPI →
Also registered at 1 Barnes Jewish Hospital Plz
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Brian Keith Day in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2011017274Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.3 times the Medicare Part D claims of the average epilepsy physician in 2024
3,061 Medicare Part D claims for 295 beneficiaries, against an average of 934 among the 476 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Levetiracetam625 claims
- Lamotrigine460 claims
- Lacosamide250 claims
- Clobazam195 claims
- Divalproex Sodium185 claims
- Zonisamide162 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): 79.3 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).
Bills Medicare through one group practice
- Washington UniversitySaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brian Keith Day among 31 epilepsy physician records in Missouri
Brian Keith Day, MD is one of 31 epilepsy physician records with a practice address in Missouri. 94% 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 26% of them.
- NPI issued2007 · 26% of these records are older, 61% newer
- In a Medicare fileYes · 94% of these records are
- In the CMS Doctors and Clinicians fileYes · 84% of these records are
- Graduated2007 · median 2009 among the 26 with a school on file
- Record last updated2025 · 0% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084E0001X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Epilepsy Physician providers in Missouri
There are 31 epilepsy physician records in Missouri.
All 31 in Missouri → Every provider in Saint Louis → Epilepsy Physician nationwide →
The 8 epilepsy physician records with the nearest ZIP codes
- Mary Bertrand, MDSaint Louis, MO 631101740211986
- Lawrence Eisenman, MDSaint Louis, MO 631101457377673
- Albert Fessler, MDSaint Louis, MO 631101790700920
- Rejean Guerriero, DOSaint Louis, MO 631101730323197
- Christina Gurnett, MDSaint Louis, MO 631101255359998
- Robert Hogan, MDSaint Louis, MO 631101801813480
- Luigi Maccotta, MDSaint Louis, MO 631101730301524
- Robin Ryther, MDSaint Louis, MO 631101356478705
Common questions
What is Brian Keith Day, MD's NPI number?
Brian Keith Day, MD's National Provider Identifier (NPI) is 1992996219, issued on Aug 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Brian Keith Day, MD located?
The NPPES record lists a practice address at 1 Barnes Jewish Hospital Plz, Saint Louis, MO, 63110. Phone: (314) 362-1408. Providers update this record themselves, so call before visiting.
How can I verify Brian Keith Day, MD's license?
NPPES lists Missouri license number 2011017274, 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 Brian Keith Day, MD prescribe under Medicare Part D?
In 2024, Brian Keith Day, MD had 3,061 Medicare Part D claims for 295 beneficiaries; the average among epilepsy physician prescribers was 934. Part D covers Medicare prescriptions only.
What is Brian Keith Day, MD's MIPS final score?
The 2023 MIPS final score is 79.3 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.