NPPES file of Aug 9, 2026

Gregory L. Samuelson, O.D.

Optometrist · Clarinda, IA

Gregory L. Samuelson, O.D. is an optometrist with a practice address in Clarinda, Iowa, and NPI 1487645156, issued on Nov 2, 2005. Check the license (Iowa 01841, as entered in NPPES) with the Iowa 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
1487645156
Name
Gregory L. Samuelson
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
License number
01841 IA
Self-reported in NPPES; status is on the state search
Practice location
116 E Washington St, Clarinda, IA 51632
Phone
(712) 542-6513
Enumerated
Nov 2, 2005
Record last updated
Aug 3, 2012 (not updated in 14 years: call before relying on the address or phone)
Fax
(712) 542-2274
Medicaid IDs
100249544-00 NE
2262956 IA
Medicare enrollment
Enrolled (PECOS I20100330000826); accepts Medicare assignment
Medical or professional school
Illinois College Of Optometry At Chicago, 1985
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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Verify Gregory L. Samuelson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Iowa board licenses this profession
    Search for license 01841
    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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42% fewer Medicare Part D claims than the average optometrist in 2024

162 Medicare Part D claims for 39 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D.

  1. Gregory Samuelson162
  2. Specialty average277

Most prescribed

  1. Latanoprost96 claims
  2. Timolol Maleate25 claims
  3. Neomycin-Polymyxin-Dexameth14 claims
  4. Dorzolamide-Timolol12 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.

Bills Medicare through one group practice

  1. Eyecare Associates OF Southwest Iowa IncClarinda, IA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Gregory L. Samuelson among 676 optometrist records in Iowa

Gregory L. Samuelson, O.D. is one of 676 optometrist records with a practice address in Iowa. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 82% newer
  • In a Medicare fileYes · 76% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated1985 · median 2006 among the 462 with a school on file
  • Record last updated2012 · 74% 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 Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

2 optometrist records list a practice address in Clarinda

They are 2 of the 115 NPPES records with a practice address in Clarinda, and 676 optometrist records in Iowa.

The 8 optometrist records with the nearest ZIP codes

  1. Daniel Lantz, ODClarinda, IA 516321699767442
  2. James Cloepfil, O.D.Shenandoah, IA 516011093706731
  3. Orlin Fick, O.D.Shenandoah, IA 516011659350148
  4. Laurel Heskett, ODShenandoah, IA 516011639863020
  5. Jacob Muller, O.D.Shenandoah, IA 516011154701118
  6. Jessica Jones, O.D.Red Oak, IA 515661619353786
  7. Michael Portz, ODRed Oak, IA 515661568463065
  8. Janet Wade, ODRed Oak, IA 515661801897178

Common questions

What is Gregory L. Samuelson, O.D.'s NPI number?

Gregory L. Samuelson, O.D.'s National Provider Identifier (NPI) is 1487645156, issued on Nov 2, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Gregory L. Samuelson, O.D. located?

The NPPES record lists a practice address at 116 E Washington St, Clarinda, IA, 51632. Phone: (712) 542-6513. Providers update this record themselves, so call before visiting.

How can I verify Gregory L. Samuelson, O.D.'s license?

NPPES lists Iowa license number 01841, as entered by the provider. Search the Iowa board that licenses this profession; the NPPES record confirms identity only.

How much does Gregory L. Samuelson, O.D. prescribe under Medicare Part D?

In 2024, Gregory L. Samuelson, O.D. had 162 Medicare Part D claims for 39 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.