Quick answers
- Where does Jarrett C. Lieder see patients?
- Medicare's clinician data lists 2 practice locations, including Oshkosh, WI and Winneconne, WI. Call before your visit to confirm the address.
- What is Jarrett C. Lieder's specialty?
- Medicare lists Optometry as the primary specialty.
- Does Jarrett C. Lieder accept Medicare assignment?
- Yes. Medicare's clinician data says Jarrett C. Lieder accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Jarrett C. Lieder?
- (920) 426-2020, as listed in official Medicare / NPI Registry data.
- What is Jarrett C. Lieder's NPI number?
- 1104745256. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Jarrett C. Lieder is enrolled with Medicare (CMS data updated 2026-10-02).
- 2510 W 9th AveOshkosh, WI 54904 (920) 426‑2020
- 908 E Main St, Suite AWinneconne, WI 54986 (920) 582‑4477
Group practices
Medicare enrollment lists Jarrett C. Lieder as a member of this group (CMS data updated 2026-10-02).
- Dr J J Marsh Ltd4 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Oshkosh
Clinicians with the same Medicare primary specialty in Oshkosh, WI — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Graduation year | 2026 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1104745256 |
| 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 2026-10-02, retrieved 2026-10-29
- 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