Quick answers
- Which hospitals does Nickolas A. Williams work at?
- Medicare's official clinician data lists Nickolas A. Williams at 5 hospitals: Deaconess Illinois Crossroads, Good Samaritan Regional Hlth Center, Herrin Hospital, Marshall Browning Hospital and Sarah Bush Lincoln Health Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Nickolas A. Williams see patients?
- Medicare's clinician data lists 9 practice locations, including Mattoon, IL, Mount Vernon, IL and Benton, IL. Call before your visit to confirm the address.
- What is Nickolas A. Williams's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Nickolas A. Williams accept Medicare assignment?
- Yes. Medicare's clinician data says Nickolas A. Williams 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 Nickolas A. Williams?
- (217) 342-3400, as listed in official Medicare / NPI Registry data.
- What is Nickolas A. Williams's NPI number?
- 1548558950. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Nickolas A. Williams works
Medicare's Facility Affiliation Data lists Nickolas A. Williams at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Deaconess Illinois CrossroadsMount Vernon, IL · Acute Care Hospital · CCN 140294
- Good Samaritan Regional Hlth CenterMount Vernon, IL · Acute Care Hospital · CCN 140046
- Herrin HospitalHerrin, IL · Acute Care Hospital · CCN 140011
- Marshall Browning HospitalDu Quoin, IL · Critical Access Hospital · CCN 141331
- Sarah Bush Lincoln Health CenterMattoon, IL · Acute Care Hospital · CCN 140189
Practice locations
Addresses where Nickolas A. Williams is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 9; the Medicare profile lists all.
- 1000 Health Ctr DrMattoon, IL 61938
- 1004 Health Ctr DrMattoon, IL 61938
- 1007 S 42nd St, Suite 1Mount Vernon, IL 62864 (217) 342‑3400
- 101 Professional PlzMattoon, IL 61938 (217) 238‑3730
- 1104 W Main StBenton, IL 62812 (618) 439‑3399
Group practices
Medicare enrollment lists Nickolas A. Williams as a member of these groups (CMS data updated 2026-10-02).
- Select Physical Therapy Holdings Inc2,024 clinicians in the group
- Sarah Bush Lincoln Health Center419 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Mattoon
Clinicians with the same Medicare primary specialty in Mattoon, IL — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Medical school | University Of Wisconsin School Of Medicine |
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1548558950 |
| 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 2026-10-02, retrieved 2026-10-29
- 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