Quick answers
- Where does William T. Feriend see patients?
- Medicare's clinician data lists 3 practice locations, including Chicago, IL and Berwyn, IL. Call before your visit to confirm the address.
- What is William T. Feriend's specialty?
- Medicare lists Optometry as the primary specialty.
- Does William T. Feriend accept Medicare assignment?
- Yes. Medicare's clinician data says William T. Feriend 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 William T. Feriend?
- (773) 525-0952, as listed in official Medicare / NPI Registry data.
- What is William T. Feriend's NPI number?
- 1083348353. 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 William T. Feriend is enrolled with Medicare (CMS data updated 2026-10-02).
- 1926 W Irving Park RdChicago, IL 60613 (773) 525‑0952
- 6233 Cermak RdBerwyn, IL 60402 (708) 749‑2020
- 6235 Cermak RdBerwyn, IL 60402
Group practices
Medicare enrollment lists William T. Feriend as a member of this group (CMS data updated 2026-10-02).
- Rosin Optical Co Inc51 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Chicago
Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.
Clinician information
| Medical school | Southern College Of Optometry |
|---|---|
| Graduation year | 2022 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1083348353 |
| 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