NPPES file of Aug 9, 2026

Nathan Curtis Dieckow, O.D.

Optometrist · Galesburg, IL

Nathan Curtis Dieckow, O.D. is an optometrist with a practice address in Galesburg, Illinois, and NPI 1841423753, issued on Aug 25, 2009. Check the license (Illinois 046010231, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1841423753
Name
Nathan Curtis Dieckow
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
License numbers
046010231 IL
2010018379 MO
Self-reported in NPPES; status is on the state search
Practice location
1115 N Henderson St, Galesburg, IL 61401
Phone
(309) 343-1107
Enumerated
Aug 25, 2009
Record last updated
Jul 5, 2015 (not updated in 11 years: call before relying on the address or phone)
Fax
(309) 343-1306
Medicaid ID
1841423753 MO
Medicare enrollment
Enrolled (PECOS I20100909000427); accepts Medicare assignment
Medical or professional school
University Of Missouri St Louis - School Of Optometry, 2009
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1115 N Henderson St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Daniel Sherwood, ODOptometrist1700897543

Verify Nathan Curtis Dieckow in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this profession
    Search for license 046010231
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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64% fewer Medicare Part D claims than the average optometrist in 2024

101 Medicare Part D claims for 45 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 36% of claims.

  1. Nathan Dieckow101
  2. Specialty average277

Most prescribed

  1. Latanoprost27 claims
  2. Azelastine Hcl16 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $113.83

1 payment: food and beverage; the largest payer was CooperVision Inc. The 34,453 providers of this specialty with any payment received $769.99 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Nathan Dieckow$113.83
  2. Specialty average$769.99

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Nathan Curtis Dieckow among 2,697 optometrist records in Illinois

Nathan Curtis Dieckow, O.D. is one of 2,697 optometrist records with a practice address in Illinois. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 56% of them.

  • NPI issued2009 · 56% of these records are older, 42% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 56% of these records are
  • Graduated2009 · median 2008 among the 1,513 with a school on file
  • Record last updated2015 · 68% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

10 optometrist records list a practice address in Galesburg

They are 10 of the 526 NPPES records with a practice address in Galesburg, and 2,697 optometrist records in Illinois.

The 8 optometrist records with the nearest ZIP codes

  1. Alexandra Braet, O.D.Galesburg, IL 614011740837848
  2. Anthony Carter, ODGalesburg, IL 614011558560136
  3. Pamela Eilenfeldt, ODGalesburg, IL 614011114075645
  4. Elizabeth Eyler, O.D.Galesburg, IL 614011669806600
  5. Peter Kehoe, ODGalesburg, IL 614011164415139
  6. Brian Plattner, ODGalesburg, IL 614011225021298
  7. Daniel Sherwood, ODGalesburg, IL 614011700897543
  8. Elisa Skadahl, O.D.Galesburg, IL 614011568619898

Common questions

What is Nathan Curtis Dieckow, O.D.'s NPI number?

Nathan Curtis Dieckow, O.D.'s National Provider Identifier (NPI) is 1841423753, issued on Aug 25, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Nathan Curtis Dieckow, O.D. located?

The NPPES record lists a practice address at 1115 N Henderson St, Galesburg, IL, 61401. Phone: (309) 343-1107. Providers update this record themselves, so call before visiting.

How can I verify Nathan Curtis Dieckow, O.D.'s license?

NPPES lists Illinois license number 046010231, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.

How much does Nathan Curtis Dieckow, O.D. prescribe under Medicare Part D?

In 2024, Nathan Curtis Dieckow, O.D. had 101 Medicare Part D claims for 45 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.