CLAIRE ELIZABETH THAYER OD
NPI 1942990494
Optometrist in Saint Peters, MO

Active since May 09, 2023PECOS EnrolledAccepts Medicare Assignment
6157 MID RIVERS MALL DR, SAINT PETERS, MO 63304(636) 926-3647(636) 926-3684 Get Directions Write a Review

NPPES record last updated: August 4, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Aug 4, 2025, May 9, 2023 (2 updates tracked since 2023).

About Claire Elizabeth Thayer Od NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CLAIRE ELIZABETH THAYER OD (NPI 1942990494) is an individual optometrist in Saint Peters, Missouri, licensed in Missouri (2024019006) and active in the NPI registry since May 2023. She is enrolled in Medicare PECOS and is a graduate of University Of Missouri St Louis - School Of Optometry (2024).

NPPES Registry Identity

NPI1942990494
Entity TypeIndividualFemale
Primary Taxonomy152W00000X
Provider Legal NameCLAIRE ELIZABETH THAYERCredential: OD
Location Address6157 MID RIVERS MALL DRSaint Peters, MO 63304-1105
Mailing Address15933 Clayton RdBallwin, MO 63011-2198 · (636) 200-4393
Fax(636) 926-3684
Sole ProprietorNo
Medical School CMSUniversity Of Missouri St Louis - School Of OptometryGraduated 2024
Enumeration DateMay 9, 2023
Last NPPES UpdateAugust 4, 20252 updates tracked since enumeration
NPPES CertifiedAugust 4, 2025
NPI 1942990494 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyOptometristEye and Vision Services Providers
Taxonomy Code152W00000X
License Licensed in MO · 2024019006
Definition

Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.

6157 MID RIVERS MALL DR, Saint Peters, MO 63304

Other Names 1

Former Name (1)Mrs. Claire Elizabeth Day

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Claire Elizabeth Thayer Od is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3072056118
PECOS Enrollment IDI20240618002125
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63304 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$128.28 typical visit price
range $55.65 – $169.38
Typical copayment $32.07 (range $13.91 – $42.34)
Most-billed visit code 99204
Established Patient
$69.50 typical visit price
range $17.76 – $137.92
Typical copayment $17.37 (range $4.44 – $34.48)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Optometrist
6157 MID RIVERS MALL DR, 202
SAINT PETERS, MO 63304
Optometrist
6157 MID RIVERS MALL DR
SAINT PETERS, MO 63304
Optometrist
6157 MID RIVERS MALL DR
SAINT PETERS, MO 63304
Optometrist
6157 MID RIVERS MALL DR
SAINT PETERS, MO 63304
Optometrist
6157 MID RIVERS MALL DR
SAINT PETERS, MO 63304

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Claire Thayer's NPI number?

The NPI number for Claire Thayer is 1942990494. It was assigned to this individual provider in the NPPES registry on May 9, 2023. The provider is also known as Mrs. Claire Elizabeth Day.

Where is Claire Thayer located?

Claire Thayer practices at 6157 Mid Rivers Mall Dr, Saint Peters, MO 63304. The listed phone number is (636) 926-3647.

What is Claire Thayer's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

Is Claire Thayer enrolled in Medicare?

Yes. Claire Thayer is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Claire Thayer accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health and Ambetter from Sunflower Health Plan and 12 other insurers list Claire Thayer as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Claire Thayer was last updated on August 4, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.