NPPES file of Aug 9, 2026

Eliot G. Masek, O.D.

Optometrist · Farmington, MO

Eliot G. Masek, O.D. is an optometrist with a practice address in Farmington, Missouri, and NPI 1134432149, issued on Jul 19, 2010. Check the license (Missouri 2011037694, as entered in NPPES) with the Missouri 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1134432149
Name
Eliot G. Masek
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
License numbers
2011037694 MO
046010396 IL
Self-reported in NPPES; status is on the state search
Practice location
537 W Karsch Blvd, Farmington, MO 63640
Phone
(573) 747-4133
Enumerated
Jul 19, 2010
Record last updated
Oct 2, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(573) 747-4533
Medicaid ID
046010396 IL
Medicare enrollment
Enrolled (PECOS I20120508000117); accepts Medicare assignment
Medical or professional school
University Of Missouri St Louis - School Of Optometry, 2010
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 537 W Karsch Blvd

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

  1. Claire CortnerOptometrist1255125209
  2. Megan Smith, O.D.Optometrist1295966927

Verify Eliot G. Masek in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Missouri board licenses this profession
    Search for license 2011037694
    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
Find the Missouri license search

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6% more Medicare Part D claims than the average optometrist in 2024

294 Medicare Part D claims for 65 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims.

  1. Eliot Masek294
  2. Specialty average277

Most prescribed

  1. Latanoprost147 claims
  2. Timolol Maleate35 claims
  3. Combigan18 claims
  4. Brimonidine Tartrate14 claims
  5. Fluorometholone13 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.

The practice group's MIPS final score for 2023 (Medicare payment program): 91 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score94.0
  2. Costout of 100 · 30%77.8
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $325.17

4 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. 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. Eliot Masek$325.17
  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.

Bills Medicare through one group practice

  1. Columbia Eye Consultants OptometryColumbia, MO

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

Eliot G. Masek among 1,242 optometrist records in Missouri

Eliot G. Masek, O.D. is one of 1,242 optometrist records with a practice address in Missouri. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 63% of them.

  • NPI issued2010 · 63% of these records are older, 35% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated2010 · median 2007 among the 768 with a school on file
  • Record last updated2014 · 67% 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 Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Optometrist providers in Missouri

There are 1,242 optometrist records in Missouri.

The 8 optometrist records with the nearest ZIP codes

  1. Claire CortnerFarmington, MO 636401255125209
  2. Bob Lype, O.D.Farmington, MO 636401225203276
  3. Shelton SagoFarmington, MO 636401548317035
  4. Megan Smith, O.D.Farmington, MO 636401295966927
  5. Jason Street, ODFarmington, MO 636401467511105
  6. Shawn Haferkamp, ODFredericktown, MO 636451023198959
  7. Michelle Spray, O.D.Bonne Terre, MO 636281275541302
  8. David Albert, O.D.Potosi, MO 636641922123298

Common questions

What is Eliot G. Masek, O.D.'s NPI number?

Eliot G. Masek, O.D.'s National Provider Identifier (NPI) is 1134432149, issued on Jul 19, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Eliot G. Masek, O.D. located?

The NPPES record lists a practice address at 537 W Karsch Blvd, Farmington, MO, 63640. Phone: (573) 747-4133. Providers update this record themselves, so call before visiting.

How can I verify Eliot G. Masek, O.D.'s license?

NPPES lists Missouri license number 2011037694, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.

How much does Eliot G. Masek, O.D. prescribe under Medicare Part D?

In 2024, Eliot G. Masek, O.D. had 294 Medicare Part D claims for 65 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.

What is Eliot G. Masek, O.D.'s MIPS final score?

The 2023 MIPS final score is 91 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.