Dr. Brian Keith Day, MD
- Medicare services, 2024
- 491
- Medicare patients, 2024
- 284
- Part D claims, 2024
- 3,061
- MIPS score, 2024
- 84
- Hospital affiliations
- 1
- Practice address
- One Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110
- Practice phone
- Call (314) 747-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Day's professional email, personal email and mobile number
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Dr. Brian Keith Day is an epilepsy physician in Saint Louis, Missouri
Dr. Day practices at Barnes-Jewish Hospital in Saint Louis, Missouri, part of BJC Health.
Dr. Day's NPI, 1992996219, was assigned on August 5, 2007. Dr. Day graduated from University of Kentucky College of Medicine in 2007. Dr. Day holds Missouri license 2011017274.
- NPI
- 1992996219NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1658536743
- NPI enumeration date
- August 5, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (314) 747-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Brian Keith Day practices at 2 locations in Saint Louis, Missouri
Dr. Day's primary practice is Barnes-Jewish Hospital, at One Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110 in St. Louis City. The practice phone is (314) 747-3000. Dr. Day also practices at Barnes-Jewish Hospital, 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110.
- Barnes-Jewish HospitalPrimaryOne Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110 · St. Louis CityPhone(314) 747-3000
- Barnes-Jewish Hospital1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110 · Saint Louis CityPhone(314) 747-3000
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Brian Keith Day is affiliated with 1 site of care and 1 medical group
Dr. Day's primary practice is Barnes-Jewish Hospital in Saint Louis, Missouri, part of BJC Health. The medical group on file is WashU Medicine Psychiatry.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Brian Keith Day's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Day practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Barnes-Jewish Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across BJC Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Brian Keith Day is one of 21 epilepsy physicians in Missouri
Epilepsy is Dr. Day's primary specialty in the NPI Registry, under taxonomy code 2084E0001X. Dr. Day is licensed in Missouri.
Specialties and state licenses
- Epilepsy, MissouriPrimary
Epilepsy physicians near Dr. Day
Counts of epilepsy physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Brian Keith Day billed Medicare for 491 services in 2024
CMS data shows 491 Medicare services from Dr. Day across 9 procedure codes in 2024, for 284 Medicare patients. Medicare paid $33,154 for them.
Dr. Day's Medicare services by type, 2024
- Tests and treatments206
- Office and hospital visits157
- Other services128
Where Dr. Day's Medicare services took place, 2024
- In an office28558%
- In a facility20642%
Dr. Day compared with the Missouri median for epilepsy physicians, 2024
- Dr. Day
- Missouri median
- Part D claims
- 2,978vs 29410.1 times
Medians across 16 epilepsy physicians in Missouri with Dmand AI profiles that report each measure.
Dr. Day's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Day?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Day and other epilepsy physicians in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Brian Keith Day treated 284 Medicare patients in 2024, average age 62
CMS counts 284 Medicare patients who saw Dr. Day in 2024. The largest group is under 65, with 119 patients. 67% of them have high blood pressure, and 62% have high cholesterol. 43% are also on Medicaid. Their average risk score is 2.14, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Day's median patient age at 57, with 56% women.
Dr. Day's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Day's Medicare patients by sex, 2024
- Women14852%
- Men13648%
Chronic conditions among Dr. Day's Medicare patients, 2024
- High blood pressure67%
- High cholesterol62%
- Mood disorders45%
- Arthritis44%
- Depression42%
- Anxiety41%
- Chronic kidney disease31%
- Diabetes31%
Share of Medicare patients with each condition. A patient can have several.
Dr. Day's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 57
Patient panel by sex, all payers
- Women56%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Brian Keith Day wrote 3,061 Medicare Part D claims in 2024
In 2024, Dr. Day wrote 3,061 Medicare Part D claims for 295 patients. 92% of them were for generic drugs. CMS names the drug for 2,978 of them, across 30 drugs with 11 or more claims each, at $501,129 in total drug cost.
Dr. Day's Part D claims by kind of drug, 2024
- Generic2,819 claims92%
- Brand-name226 claims7%
- Other16 claims1%
Dr. Day's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Brian Keith Day scored 84 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Day for performance year 2024, reported as part of a group. Dr. Day accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Day as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Day's MIPS scores, performance year 2024
- 84of 100Final score
- 71.6of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 76of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Brian Keith Day received $148 in industry payments in 2025
CMS Open Payments shows 1 general payment to Dr. Day from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Medtronic, Inc. paid the most, $148.
Companies that paid Dr. Day the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Brian Keith Day graduated from University of Kentucky College of Medicine
Dr. Day graduated from University of Kentucky College of Medicine in 2007.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Brian Keith Day's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Brian Keith Day
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Brian Keith Day's NPI number?
Dr. Brian Keith Day's NPI number is 1992996219. It was assigned on August 5, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Brian Keith Day?
Dr. Brian Keith Day is an epilepsy physician in Saint Louis, Missouri. The primary specialty in the NPI Registry is Epilepsy Physician (taxonomy code 2084E0001X).
Where does Dr. Brian Keith Day practice?
Dr. Day practices at One Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110. Dr. Day also practices at 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110. Dr. Day's primary practice is Barnes-Jewish Hospital in Saint Louis, Missouri, part of BJC Health.
What is Dr. Brian Keith Day's office phone number?
The practice phone on file for Dr. Day is (314) 747-3000.
What is Dr. Brian Keith Day's medical license number?
Dr. Day holds Missouri license 2011017274.
Which hospitals is Dr. Brian Keith Day affiliated with?
Dr. Day practices at Barnes-Jewish Hospital in Saint Louis, Missouri.
What medical group is Dr. Brian Keith Day part of?
Dr. Day is linked to WashU Medicine Psychiatry.
Does Dr. Brian Keith Day accept Medicare?
Yes. CMS data shows Dr. Day billed Medicare for 491 services in 2024, and Dr. Day accepts Medicare assignment.
Does Dr. Brian Keith Day offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Day as offering telehealth services.
What is Dr. Brian Keith Day's MIPS score?
Dr. Day's MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Brian Keith Day see?
CMS counts 284 Medicare patients who saw Dr. Day in 2024, with an average age of 62.
What services does Dr. Brian Keith Day bill to Medicare?
In 2024, Dr. Day's most billed Medicare services were medicare service (G2211), nerve and brain test (95720) and office visit, established patient (99214).
Where did Dr. Brian Keith Day go to medical school?
Dr. Day graduated from University of Kentucky College of Medicine in 2007.
What drugs does Dr. Brian Keith Day prescribe most?
In 2024 Medicare Part D data, Dr. Day's most prescribed drugs by claims were Levetiracetam, Lamotrigine and Lacosamide.
Has Dr. Brian Keith Day received payments from drug or device companies?
CMS Open Payments shows $148 in general payments to Dr. Day from 1 company from 2025 to 2025. The largest total came from Medtronic, Inc.
How long has Dr. Brian Keith Day been practicing?
Dr. Day graduated from medical school in 2007, 19 years ago.
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