Quick answers
- Does Trenika J. Williams accept Medicare assignment?
- Yes. Medicare's clinician data says Trenika J. Williams 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.
- What is Trenika J. Williams's NPI number?
- 1083295497. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Trenika J. Williams works
Medicare's Facility Affiliation Data lists Trenika J. Williams 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.
- Rush University Medical CenterChicago, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140119
Practice locations
Addresses where Trenika J. Williams is enrolled with Medicare (CMS data updated October 2, 2026).
- 1000 Health Ctr DrMattoon, IL 61938 (217) 258‑2525
- 1653 W Congress PkwyChicago, IL 60612 (312) 563‑4270
Group practices
Medicare enrollment lists Trenika J. Williams as a member of these groups (CMS data updated October 2, 2026).
- Rush University Medical Group1,551 clinicians in the group
- Sarah Bush Lincoln Health Center419 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Mattoon
Clinicians with the same Medicare primary specialty in Mattoon, IL — not a recommendation.
Other clinicians in Rush University Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Geisel School Of Medicine At Dartmouth |
| Graduation year | 2021 (5 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1083295497 |
| 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
- 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