Quick answers
- Does Samuel W. Butler accept Medicare assignment?
- Yes. Medicare's clinician data says Samuel W. Butler 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 Samuel W. Butler see?
- In 2024, CMS data shows 978 Original Medicare patients and 1,937 services for Samuel W. Butler. This counts Original Medicare only and measures volume, not quality.
- What is Samuel W. Butler's NPI number?
- 1538247135. 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 Samuel W. Butler, 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 | 978 |
|---|---|
| Services billed to Medicare | 1,937 |
| Different services or procedures | 26 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)624 services
- Established patient complete exam of visual system (92014)512 services
- Imaging of retina (92134)181 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)103 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)103 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 pressure69%
- High cholesterol66%
- Arthritis35%
- Diabetes28%
- Chronic kidney disease22%
- Ischemic heart disease19%
Practice locations
Addresses where Samuel W. Butler is enrolled with Medicare (CMS data updated October 2, 2026).
- 3 E 18th StSpencer, IA 51301 (712) 262‑1589
Group practices
Medicare enrollment lists Samuel W. Butler as a member of this group (CMS data updated October 2, 2026).
- Eyecare Centre4 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Spencer
Clinicians with the same Medicare primary specialty in Spencer, IA — not a recommendation.
Other clinicians in Eyecare Centre
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Optometry school | Pennsylvania College Of Optometry |
| Graduation year | 1999 (27 years since optometry school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1538247135 |
| 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
- 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