Quick answers
- Does Brian W. Keenan accept Medicare assignment?
- Yes. Medicare's clinician data says Brian W. Keenan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Brian W. Keenan see?
- In 2024, CMS data shows 397 Original Medicare patients and 451 services for Brian W. Keenan. This counts Original Medicare only and measures volume, not quality.
- What is Brian W. Keenan's NPI number?
- 1063699163. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Brian W. Keenan, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 397 |
|---|---|
| Services billed to Medicare | 451 |
| Different services or procedures | 20 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Emergency department visit with moderate level of medical decision making (99284)234 services
- Emergency department visit with high level of medical decision making (99285)129 services
- Emergency department visit with low level of medical decision making (99283)53 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis56%
- Diabetes42%
- Anxiety40%
- Ischemic heart disease39%
Hospitals where Brian W. Keenan works
Medicare's Facility Affiliation Data lists Brian W. Keenan at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Lake Regional Health SystemOsage Beach, MO · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 260186
- Missouri Delta Medical CenterSikeston, MO · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 260113
- Northeast Regional Medical CenterKirksville, MO · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 260022
- Saint Francis Medical CenterCape Girardeau, MO · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 260183
- Washington County Memorial HospitalPotosi, MO · Critical Access Hospital · Emergency services: listed by Medicare · CCN 261308
Practice locations
Addresses where Brian W. Keenan is enrolled with Medicare (CMS data updated October 2, 2026).
- 1008 N Main StSikeston, MO 63801 (573) 471‑1600
- 211 Saint Francis DrCape Girardeau, MO 63703 (573) 331‑3000
- 300 Health Way DrPotosi, MO 63664 (573) 438‑5451
- 315 S Osteopathy AveKirksville, MO 63501 (660) 785‑1000
- 54 Hospital DrOsage Beach, MO 65065 (573) 348‑8000
Group practices
Medicare enrollment lists Brian W. Keenan as a member of these groups (CMS data updated October 2, 2026).
- Saint Francis Medical Center443 clinicians in the group
- Ripley Emergency Group LLC37 clinicians in the group
- Camden Emergency Group LLC31 clinicians in the group
- Potosi Emergency Group, LLC19 clinicians in the group
- Sikeston Emergency Group LLC17 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Sikeston
Clinicians with the same Medicare primary specialty in Sikeston, MO — not a recommendation.
Other clinicians in Saint Francis Medical Center
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2013 (13 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1063699163 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians