Quick answers
- Where does Mark R. Sinclair see patients?
- Medicare's clinician data lists 4 practice locations, including Peoria, IL, Lubbock, TX and Philadelphia, PA. Call before your visit to confirm the address.
- What is Mark R. Sinclair's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does Mark R. Sinclair accept Medicare assignment?
- Yes. Medicare's clinician data says Mark R. Sinclair 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 Mark R. Sinclair's NPI number?
- 1689624140. 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 Mark R. Sinclair is enrolled with Medicare (CMS data updated 2026-10-02).
- 124 SW Adams StPeoria, IL 61602
- 2215 Nashville AveLubbock, TX 79410
- PO BoxPhiladelphia, PA 19178
- PO BoxSpringfield, IL 62794
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Peoria
Clinicians with the same Medicare primary specialty in Peoria, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1986 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1689624140 |
| 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