Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Michael Dennis Barnum, MD

Individual provider Emergency Medicine Physician · NPI 1093779209

Dr. Michael Dennis Barnum, MD is an Emergency Medicine in Potosi, Missouri. Graduated from Saint Louis University School of Medicine in 1989, 37 years ago. Practices with Rh Arkansas Emergency Medicine PLLC, a 21-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Arkansas and Missouri.

Years since qualifying
37
Trained at
Saint Louis University School of Medicine
Licensed in
AR, MO
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

300 Health Way Dr
Potosi, MO 63664-1420
Phone: (573) 438-5451
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 1100 E Poplar St, Clarksville, AR 72830-4419 — (479) 754-5454
  • 700 W Grove St, El Dorado, AR 71730-4416 — (870) 863-2000
  • 1008 N Main St, Sikeston, MO 63801-5044 — (573) 471-1600

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence R5N32 (MO)
Emergency Medicine Physician Taxonomy 207P00000X · Licence E-6166 (AR)

Record details

NPI number1093779209
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 14, 2006
Last updated in NPPESOctober 4, 2019

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolSAINT LOUIS UNIVERSITY SCHOOL OF MEDICINE
Graduated 1989 (37 years in practice)
Group practice Rh Arkansas Emergency Medicine Pllc — 21 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Other providers in Potosi