Quick answers
- Does Joseph L. Zimmer accept Medicare assignment?
- Yes. Medicare's clinician data says Joseph L. Zimmer 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 Joseph L. Zimmer see?
- In 2024, CMS data shows 269 Original Medicare patients and 562 services for Joseph L. Zimmer. This counts Original Medicare only and measures volume, not quality.
- What is Joseph L. Zimmer's NPI number?
- 1063048098. 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 Joseph L. Zimmer, 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 | 269 |
|---|---|
| Services billed to Medicare | 562 |
| Different services or procedures | 24 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient complete exam of visual system (92014)116 services
- New patient complete exam of visual system (92004)113 services
- Measurement of corneal curvature and depth of eye (92136)71 services
- Imaging of retina (92134)65 services
- Removal of cataract with insertion of prosthetic lens (66984)36 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 cholesterol71%
- Arthritis46%
- Diabetes32%
- Chronic kidney disease28%
- Ischemic heart disease27%
Hospitals where Joseph L. Zimmer works
Medicare's Facility Affiliation Data lists Joseph L. Zimmer 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.
- Mercy Hospital Fort SmithFort Smith, AR · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 040062
Practice locations
Addresses where Joseph L. Zimmer is enrolled with Medicare (CMS data updated October 2, 2026).
- 3312 S 70th StFort Smith, AR 72903 (479) 452‑7800
Group practices
Medicare enrollment lists Joseph L. Zimmer as a member of this group (CMS data updated October 2, 2026).
- Ennen Eye Center, P.A.4 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Fort Smith
Clinicians with the same Medicare primary specialty in Fort Smith, AR — not a recommendation.
Other clinicians in Ennen Eye Center, P.A.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Missouri, Columbia School Of Medicine |
| Graduation year | 2020 (6 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1063048098 |
| 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