Michael Dennis Barnum, M.D.
Emergency Medicine Physician · Potosi, MO
Michael Dennis Barnum, M.D. is an emergency medicine physician with a practice address in Potosi, Missouri, and NPI 1093779209, issued on Apr 14, 2006. Check the license (Missouri R5N32, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Michael Dennis Barnum
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- R5N32 MO
E-6166 AR
Self-reported in NPPES; status is on the state search - Practice location
- 300 Health Way Dr, Potosi, MO 63664
- Phone
- (573) 438-5451
- Enumerated
- Apr 14, 2006
- Record last updated
- Oct 4, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20120605000506); accepts Medicare assignment
- Medical or professional school
- Saint Louis University School Of Medicine, 1989
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,405 in Missouri → Look up another NPI →
Also registered at 300 Health Way Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kamal Akhtar, FNPNurse Practitioner1720543838
- Michelle Barnes, AE-CPrevention Professional1346730322
- Kallie BelfieldFamily Nurse Practitioner1285171462
- Carol DealRegistered Dietitian1144644139
- Steven Grouse, DPMPodiatrist1245224153
- Matthew Hart, D.O.Emergency Medicine Physician1417005893
Verify Michael Dennis Barnum 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 R5N32Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12% more Medicare Part D claims than the average emergency medicine physician in 2024
252 Medicare Part D claims for 164 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 52 claims were for opioids.
Most prescribed
- Ondansetron Odt27 claims
- Tramadol Hcl20 claims
- Cephalexin17 claims
- Levofloxacin17 claims
- Hydrocodone-Acetaminophen16 claims
- Doxycycline Hyclate14 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.
3 hospitals and group practices
- Correct Care, Inc.Ashdown, AR
- Pemiscot County Memorial HospitalHayti, MO · Acute Care Hospitals
- RH Arkansas Emergency Medicine PLLCBlytheville, AR
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).
Michael Dennis Barnum among 1,405 emergency medicine physician records in Missouri
Michael Dennis Barnum, M.D. 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 59% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1989 · median 2012 among the 808 with a school on file
- Record last updated2019 · 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).
2 emergency medicine physician records list a practice address in Potosi
They are 2 of the 111 NPPES records with a practice address in Potosi, and 1,405 emergency medicine physician records in Missouri.
All 1,405 in Missouri → Every provider in Potosi → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Matthew Hart, D.O.Potosi, MO 636641417005893
- Shamim Amini, MDSte Genevieve, MO 636701265486617
- Michael Kolda, M.D.Ste Genevieve, MO 636701346375870
- Sonja Hampton, RN, BC, FNPFarmington, MO 636401649225996
- Kelly Hartel, M.D.Farmington, MO 636401588636823
- Mark Hassen, MDFarmington, MO 636401932151958
- John Hunt, M.D.Farmington, MO 636401770527376
- Phillip Brewer, MDBonne Terre, MO 636281215902556
Common questions
What is Michael Dennis Barnum, M.D.'s NPI number?
Michael Dennis Barnum, M.D.'s National Provider Identifier (NPI) is 1093779209, issued on Apr 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael Dennis Barnum, M.D. located?
The NPPES record lists a practice address at 300 Health Way Dr, Potosi, MO, 63664. Phone: (573) 438-5451. Providers update this record themselves, so call before visiting.
How can I verify Michael Dennis Barnum, M.D.'s license?
NPPES lists Missouri license number R5N32, 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 Michael Dennis Barnum, M.D. prescribe under Medicare Part D?
In 2024, Michael Dennis Barnum, M.D. had 252 Medicare Part D claims for 164 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.