DR. MICHAEL DENNIS BARNUM M.D.
NPI 1093779209
Emergency Medicine in Potosi, MO
About Dr. Michael Dennis Barnum M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MICHAEL DENNIS BARNUM M.D. (NPI 1093779209) is an individual emergency medicine provider in Potosi, Missouri, licensed in Missouri (R5N32) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of Saint Louis University School Of Medicine (1989).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Michael Dennis Barnum M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
17Medicare enrollment records show Michael Barnum reassigns Medicare billing to 17 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Sikeston, MO 63801
- Reassigned Medicare billing, Missouri enrollment
- 46 clinicians in this Medicare group
Kennett, MO 63857
- Reassigned Medicare billing, Missouri enrollment
- 81 clinicians in this Medicare group
Paragould, AR 72450
- Reassigned Medicare billing, Arkansas enrollment
- 102 clinicians in this Medicare group
Blytheville, AR 72315
- Reassigned Medicare billing, Arkansas enrollment
- 33 clinicians in this Medicare group
Shirley, AR 72153
- Reassigned Medicare billing, Arkansas enrollment
- 59 clinicians in this Medicare group
Bentonville, AR 72712
- Reassigned Medicare billing, Arkansas enrollment
- 148 clinicians in this Medicare group
Ozark, AR 72949
- Reassigned Medicare billing, Arkansas enrollment
- 147 clinicians in this Medicare group
Paris, AR 72855
- Reassigned Medicare billing, Arkansas enrollment
- 159 clinicians in this Medicare group
Magazine, AR 72943
- Reassigned Medicare billing, Arkansas enrollment
- 146 clinicians in this Medicare group
Mansfield, AR 72944
- Reassigned Medicare billing, Arkansas enrollment
- 137 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63664 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 15
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
POTOSI, MO 63664
POTOSI, MO 63664
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Michael Barnum's NPI number?
The NPI number for Michael Barnum is 1093779209. It was assigned to this individual provider in the NPPES registry on April 14, 2006.
Where is Michael Barnum located?
Michael Barnum practices at 300 Health Way Dr, Potosi, MO 63664. The listed phone number is (573) 438-5451.
What is Michael Barnum's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Michael Barnum enrolled in Medicare?
Yes. Michael Barnum is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Michael Barnum's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Barnum reassigns Medicare benefits to 17 organizations: Sikeston Emergency Group LLC (Sikeston, MO), Pemiscot County Memorial Hospital (Kennett, MO), East Arkansas Emergency Physicians, PLLC (Paragould, AR), Rh Arkansas Emergency Medicine, PLLC (Blytheville, AR), Ozark Health, Inc (Shirley, AR) and 12 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Michael Barnum's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Michael Barnum was last updated on October 4, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Michael Dennis Barnum, M.D. · NPI 1093779209
Emergency Medicine physician in Potosi, Missouri. Individual provider, active in the CMS NPPES registry since April 14, 2006.
## Identity
- **NPI:** 1093779209 (Entity type: Individual)
- **Enumerated:** April 14, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** R5N32 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 HEALTH WAY DR, Potosi, MO 63664-1420
- **Phone:** (573) 438-5451
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 17 organizations under Medicare reassignment (form CMS-855R): Sikeston Emergency Group LLC (NPI 1427575299, Sikeston, MO); Pemiscot County Memorial Hospital (NPI 1992807390, Kennett, MO); East Arkansas Emergency Physicians, PLLC (NPI 1760864953, Paragould, AR); Rh Arkansas Emergency Medicine, PLLC (NPI 1801643499, Blytheville, AR); Ozark Health, Inc (NPI 1891573523, Shirley, AR); and 12 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Saint Louis University School Of Medicine, class of 1989
## Record status
- **NPPES last updated:** October 4, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1093779209) · Data from the CMS NPPES public registry.