Quick answers
- Where does Claire E. Thayer see patients?
- Medicare's clinician data lists 2 practice locations, including O Fallon, MO and Saint Peters, MO. Call before your visit to confirm the address.
- What is Claire E. Thayer's specialty?
- Medicare lists Optometry as the primary specialty.
- Does Claire E. Thayer accept Medicare assignment?
- Yes. Medicare's clinician data says Claire E. Thayer 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 Claire E. Thayer?
- (636) 240-1516, as listed in official Medicare / NPI Registry data.
- What is Claire E. Thayer's NPI number?
- 1942990494. 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 Claire E. Thayer is enrolled with Medicare (CMS data updated 2026-10-02).
- 2946 Hwy KO Fallon, MO 63368 (636) 240‑1516
- 6157 Mid Rivers Mall DrSaint Peters, MO 63304 (636) 926‑3647
Group practices
Medicare enrollment lists Claire E. Thayer as a member of this group (CMS data updated 2026-10-02).
- Clarkson Optometry Inc82 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in O Fallon
Clinicians with the same Medicare primary specialty in O Fallon, MO — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Medical school | University Of Missouri St Louis - School Of Optometry |
| Graduation year | 2024 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1942990494 |
| 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