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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. BRENT THORNTON O.D.
NPI 1841545225
Optometrist in Grimes, IA

Active since July 20, 2012PECOS Enrolled
300 W 1ST ST, GRIMES, IA 50111(515) 986-2821 Get Directions Write a Review

NPPES record last updated: September 23, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 23, 2026, Aug 15, 2017 (2 updates tracked since 2017).

About Dr. Brent Thornton O.d. NPPES

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

DR. BRENT THORNTON O.D. (NPI 1841545225) is an individual optometrist in Grimes, Iowa, licensed in Iowa (002556) and active in the NPI registry since July 2012. He is enrolled in Medicare PECOS and is a graduate of Southern College Of Optometry (2012).

NPPES Registry Identity

NPI1841545225
Entity TypeIndividualMale
Primary Taxonomy152W00000X
Provider Legal NameDR. BRENT THORNTONCredential: O.D.
Location Address300 W 1ST STGrimes, IA 50111-4919
Mailing Address6627 Hampton CtJohnston, IA 50131-2985 · (712) 261-1915
Phone(515) 986-2821
Sole ProprietorYes
Medical School CMSSouthern College Of OptometryGraduated 2012
Enumeration DateJuly 20, 2012
Last NPPES UpdateSeptember 23, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 23, 2026
✔ NPI 1841545225 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 IA · 002556
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.
300 W 1ST ST, Grimes, IA 50111
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Louisiana, Blue Cross and Blue Shield of Montana and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Brent Thornton O.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4183877228
PECOS Enrollment IDI20130123000387
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.

Medicare Billing Reassignment

Medicare enrollment records show Brent Thornton reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Thornton & Bell PLLC
Same address
Optometrist
300 W 1ST ST
Grimes, IA 50111
  • Reassigned Medicare billing, Iowa enrollment
  • 2 clinicians in this Medicare group
NPI 1225410087 (712) 261-1915

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient complete exam of visual system 92014
An established patient complete exam of the visual system involves a thorough check of your eyes and vision. It assesses eye health, checks for diseases, and measures your ability to see clearly at different distances. It's a routine, non-invasive procedure.
44 services44 patients
Photography of the retina 92250
Photography of the retina, also known as retinal imaging, is a non-invasive procedure that captures images of the back of your eye. This helps doctors identify and monitor conditions like glaucoma, macular degeneration, or diabetic retinopathy. It's painless and quick, often part of a routine eye exam.
16 services16 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
13 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 50111 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
$122.23 typical visit price
range $52.96 – $161.40
Typical copayment $30.55 (range $13.24 – $40.35)
Most-billed visit code 99204
Established Patient
$66.36 typical visit price
range $16.91 – $131.98
Typical copayment $16.59 (range $4.22 – $32.99)
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

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

THORNTON & BELL PLLC
Optometrist
300 W 1ST ST
GRIMES, IA 50111
Polk County (712) 261-1915

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 Brent Thornton's NPI number?

The NPI number for Brent Thornton is 1841545225. It was assigned to this individual provider in the NPPES registry on July 20, 2012.

Where is Brent Thornton located?

Brent Thornton practices at 300 W 1st St, Grimes, IA 50111. The listed phone number is (515) 986-2821.

What is Brent Thornton's specialty?

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

Is Brent Thornton enrolled in Medicare?

Yes. Brent Thornton is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Brent Thornton's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Brent Thornton reassigns Medicare benefits to Thornton & Bell PLLC (Grimes, IA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Brent Thornton's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Brent Thornton accept?

Health plans from Anthem Blue Cross and Blue Shield, Blue Cross Blue Shield of Wyoming, Blue Cross and Blue Shield of Louisiana, Blue Cross and Blue Shield of Montana and Blue Cross and Blue Shield of Oklahoma and 11 other insurers list Brent Thornton 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 Brent Thornton was last updated on September 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 32 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.