Marshall Walker, O.D.
Optometrist · Perkins, OK
Marshall Walker, O.D. is an optometrist with a practice address in Perkins, Oklahoma, and NPI 1033554118, issued on May 2, 2013. Check the license (Oklahoma 2799, as entered in NPPES) with the Oklahoma board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marshall Walker
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 2799 OK
Self-reported in NPPES; status is on the state search - Practice location
- 509 E Highway 33, Perkins, OK 74059
- Phone
- (405) 547-2473
- Enumerated
- May 2, 2013
- Record last updated
- Jul 29, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (405) 547-2925
- Medicare enrollment
- Enrolled (PECOS I20141229001826); accepts Medicare assignment
- Medical or professional school
- Pennsylvania College Of Optometry, 2013
- Entity
- Type 1 · individual
8 nearest optometrist records → All 892 in Oklahoma → Look up another NPI →
Also registered at 509 E Highway 33
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Patricia Anson, RD LD CDERegistered Dietitian1699058172
- Lynn-Mari Cicle, MS,LPCProfessional Counselor1295069136
- Shiloa Cline, RN, BSNRegistered Nurse1316802382
- Seth Cookerly, PA-CMedical Physician Assistant1245577659
- Angela Daugherty, APRN FNP-CFamily Nurse Practitioner1285154740
- Chelsea Eisenberg, DOFamily Medicine Physician1215559919
Verify Marshall Walker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oklahoma board licenses this profession
Search for license 2799Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
14% more Medicare Part D claims than the average optometrist in 2024
315 Medicare Part D claims for 95 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Latanoprost89 claims
- Brimonidine Tartrate45 claims
- Neomycin-Polymyxin-Dexameth37 claims
- Erythromycin26 claims
- Prednisolone Acetate24 claims
- Timolol Maleate18 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 MIPS final score for 2023 (Medicare payment program): 27.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $91.57
5 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.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Marshall Walker among 892 optometrist records in Oklahoma
Marshall Walker, O.D. is one of 892 optometrist records with a practice address in Oklahoma. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 66% of them.
- NPI issued2013 · 66% of these records are older, 31% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2013 · median 2008 among the 620 with a school on file
- Record last updated2014 · 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 Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1 optometrist record lists a practice address in Perkins
They are 1 of the 80 NPPES records with a practice address in Perkins, and 892 optometrist records in Oklahoma.
All 892 in Oklahoma → Every provider in Perkins → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Crosby Cooper, O.D.Pawnee, OK 740581386325686
- Robert Morgan, O.D.Pawnee, OK 740581154306249
- John Macarty, O.D.Pawhuska, OK 740561184712069
- Kyle BennettOwasso, OK 740551679703607
- David Cash, O.D.Owasso, OK 740551720002736
- Dakota Clark, ODOwasso, OK 740551528940087
- Chad Edwards, O.D.Owasso, OK 740551063436079
- Denise Johnson, O.D.Owasso, OK 740551609847102
Common questions
What is Marshall Walker, O.D.'s NPI number?
Marshall Walker, O.D.'s National Provider Identifier (NPI) is 1033554118, issued on May 2, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Marshall Walker, O.D. located?
The NPPES record lists a practice address at 509 E Highway 33, Perkins, OK, 74059. Phone: (405) 547-2473. Providers update this record themselves, so call before visiting.
How can I verify Marshall Walker, O.D.'s license?
NPPES lists Oklahoma license number 2799, as entered by the provider. Search the Oklahoma board that licenses this profession; the NPPES record confirms identity only.
How much does Marshall Walker, O.D. prescribe under Medicare Part D?
In 2024, Marshall Walker, O.D. had 315 Medicare Part D claims for 95 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.
What is Marshall Walker, O.D.'s MIPS final score?
The 2023 MIPS final score is 27.8 of 100. 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.