Quick answers
- Where does Trevar K. Ziemer see patients?
- Medicare's clinician data lists 3 practice locations, including Tinley Park, IL, Chicago, IL and Des Plaines, IL. Call before your visit to confirm the address.
- What is Trevar K. Ziemer's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does Trevar K. Ziemer accept Medicare assignment?
- Medicare's clinician data says Trevar K. Ziemer may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is Trevar K. Ziemer's NPI number?
- 1689376345. 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 Trevar K. Ziemer is enrolled with Medicare (CMS data updated 2026-10-02).
- 18670 Graphics Dr, Suite 200Tinley Park, IL 60477
- 420 E Ohio St, Apt 6dChicago, IL 60611
- 555 Wilson LnDes Plaines, IL 60016
Specialties
- Psychiatryprimary
Other psychiatrists in Tinley Park
Clinicians with the same Medicare primary specialty in Tinley Park, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2023 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1689376345 |
| 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