Quick answers
- Does Margaret F. Tremwel accept Medicare assignment?
- Yes. Medicare's clinician data says Margaret F. Tremwel 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 Margaret F. Tremwel see?
- In 2024, CMS data shows 402 Original Medicare patients and 10,436 services for Margaret F. Tremwel. This counts Original Medicare only and measures volume, not quality.
- What is Margaret F. Tremwel's NPI number?
- 1063409993. 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 Margaret F. Tremwel, 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 | 402 |
|---|---|
| Services billed to Medicare | 10,436 |
| Different services or procedures | 26 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Injection, onabotulinumtoxina, 1 unit (J0585)9,800 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)176 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)116 services
- New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)104 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)65 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%
- Arthritis57%
- Stroke or mini-stroke49%
- Ischemic heart disease43%
- Alzheimer's disease or dementia39%
Hospitals where Margaret F. Tremwel works
Medicare's Facility Affiliation Data lists Margaret F. Tremwel 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.
- Baptist Health - Fort SmithFort Smith, AR · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 040055
- Mercy Hospital Fort SmithFort Smith, AR · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 040062
- Washington Regional Medical CenterFayetteville, AR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 040004
Practice locations
Addresses where Margaret F. Tremwel is enrolled with Medicare (CMS data updated October 2, 2026).
- 3336 N Futrall Dr, NW Arkansas Neuroscience InstituteFayetteville, AR 72703 (479) 463‑3000
Group practices
Medicare enrollment lists Margaret F. Tremwel as a member of this group (CMS data updated October 2, 2026).
- Washington Regional Medical System238 clinicians in the group
Specialties
- Neurologyprimary
Other neurologists in Fayetteville
Clinicians with the same Medicare primary specialty in Fayetteville, AR — not a recommendation.
Other clinicians in Washington Regional Medical System
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Florida College Of Medicine |
| Graduation year | 1997 (29 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1063409993 |
| 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