Joseph Daniel O'Brien, MD
Emergency Medicine Physician · Kansas City, MO
Joseph Daniel O'Brien, MD is an emergency medicine physician with a practice address in Kansas City, Missouri, and NPI 1417652561, issued on Mar 30, 2023. Check the license (Missouri 2025052807, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Joseph Daniel O'Brien
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 2025052807 MO
Self-reported in NPPES; status is on the state search - Practice location
- 4401 Wornall RD, Kansas City, MO 64111
- Phone
- (816) 932-2000
- Enumerated
- Mar 30, 2023
- Record last updated
- Mar 26, 2026
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,405 in Missouri → Look up another NPI →
Also registered at 4401 Wornall RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joseph Daniel O'Brien 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 2025052807Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% fewer Medicare Part D claims than the average emergency medicine physician in 2024
91 Medicare Part D claims for 59 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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.
Joseph Daniel O'Brien among 1,405 emergency medicine physician records in Missouri
Joseph Daniel O'Brien, MD is one of 1,405 emergency medicine physician records with a practice address in Missouri. 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 2023, is newer than 93% of them.
- NPI issued2023 · 93% of these records are older, 3% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2026 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
158 emergency medicine physician records list a practice address in Kansas City
They are 158 of the 13,759 NPPES records with a practice address in Kansas City, and 1,405 emergency medicine physician records in Missouri.
All 1,405 in Missouri → Every provider in Kansas City → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Tiina Auksi-Butler, MDKansas City, MO 641111215983754
- Robert Bonness, MDKansas City, MO 641111740393792
- Samir Doshi, MDKansas City, MO 641111548213671
- Francisco Gador, MDKansas City, MO 641111255444246
- Eduardo Guzman, DOKansas City, MO 641111669585220
- Jennifer Hanes, DOKansas City, MO 641111295794246
- James Hart, DOKansas City, MO 641111225141138
- Sarah Linderman, MDKansas City, MO 641111174596654
Common questions
What is Joseph Daniel O'Brien, MD's NPI number?
Joseph Daniel O'Brien, MD's National Provider Identifier (NPI) is 1417652561, issued on Mar 30, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Joseph Daniel O'Brien, MD located?
The NPPES record lists a practice address at 4401 Wornall RD, Kansas City, MO, 64111. Phone: (816) 932-2000. Providers update this record themselves, so call before visiting.
How can I verify Joseph Daniel O'Brien, MD's license?
NPPES lists Missouri license number 2025052807, 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 Joseph Daniel O'Brien, MD prescribe under Medicare Part D?
In 2024, Joseph Daniel O'Brien, MD had 91 Medicare Part D claims for 59 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.