DR. MICHAEL DENNIS BARNUM (M.D.) – Emergency Medicine Physician, NPI 1093779209
Emergency Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
557 EMERGENCY MEDICINE in AR
Provider Addresses for DR. MICHAEL DENNIS BARNUM (M.D.)
RR 3 BOX 66A9
MARSHALL, MO 653409323
Phone:
Type: Mailing
1100 E Poplar St
Clarksville, AR 728304419
Phone: (479) 754-5454
Fax: (479) 754-4019
Type: Location
700 W Grove St
El Dorado, AR 717304416
Phone: (870) 863-2000
Fax: (870) 864-0202
Type: Location
1008 N Main St
Sikeston, MO 638015044
Phone: (573) 471-1600
Fax: (573) 472-7606
Type: Location
Washington County Memorial Hospital, 300, Health Way Drive, Potosi, Washington County, Missouri, 63660, United States
POTOSI, MO 636641420
Phone: (573) 438-5451
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2012-06-05
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20040913000134 | I | Emergency Medicine | MO | TBD |
| I20120605000506 | I | Emergency Medicine | AR | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99284 | Emergency department visit with moderate level of medical decision making | 197 | 168 | $0 |
| 99285 | Emergency department visit with high level of medical decision making | 83 | 81 | $0 |
| 99283 | Emergency department visit with low level of medical decision making | 48 | 44 | $0 |
Insurance plans in this area (ZIP 65340)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine, Emergency Medicine, Emergency Medicine, Internal Medicine | AR | |
| Emergency Medicine | LA | |
| Family Practice, Emergency Medicine | TN | |
| Family Practice | AR | |
| Ophthalmology, Emergency Medicine | AR | |
| Internal Medicine, Hospitalist | AR | |
| Emergency Medicine, General Practice, Internal Medicine | MS | |
| Family Practice, Emergency Medicine | AR | |
| Family Practice, Emergency Medicine | AR |
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