Quick answers
- Where does Oscar A. Perez see patients?
- Medicare's clinician data lists 2 practice locations, including East Saint Louis, IL and Granite City, IL. Call before your visit to confirm the address.
- What is Oscar A. Perez's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Oscar A. Perez accept Medicare assignment?
- Yes. Medicare's clinician data says Oscar A. Perez 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 Oscar A. Perez?
- (618) 271-9191, as listed in official Medicare / NPI Registry data.
- What is Oscar A. Perez's NPI number?
- 1851177232. 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 Oscar A. Perez is enrolled with Medicare (CMS data updated 2026-10-02).
- 2001 State StEast Saint Louis, IL 62205 (618) 271‑9191
- 2166 Madison AveGranite City, IL 62040 (618) 332‑0953
Group practices
Medicare enrollment lists Oscar A. Perez as a member of this group (CMS data updated 2026-10-02).
- Southern Illinois Healthcare Foundation Inc119 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in East Saint Louis
Clinicians with the same Medicare primary specialty in East Saint Louis, IL — not a recommendation.
Clinician information
| Medical school | Lincoln Memorial University Medical Department |
|---|---|
| Graduation year | 2022 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1851177232 |
| 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