Marshall Patrick Day, OD
Optometrist · Clinton, OK
Marshall Patrick Day, OD is an optometrist with a practice address in Clinton, Oklahoma, and NPI 1588614960, issued on May 10, 2006. Check the license (Oklahoma 918, as entered in NPPES) with the Oklahoma board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marshall Patrick Day
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 918 OK
Self-reported in NPPES; status is on the state search - Practice location
- 565 S 30TH Street, Clinton, OK 73601
- Phone
- (580) 323-5421
- Enumerated
- May 10, 2006
- Record last updated
- Jun 28, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (866) 585-2957
- Medicaid ID
- 100763130A OK
- Medicare enrollment
- Enrolled (PECOS I20081204000274); accepts Medicare assignment
- Medical or professional school
- Southern College Of Optometry, 1977
- Entity
- Type 1 · individual
8 nearest optometrist records → All 892 in Oklahoma → Look up another NPI →
Verify Marshall Patrick Day in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oklahoma board licenses this profession
Search for license 918Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
64% fewer Medicare Part D claims than the average optometrist in 2024
100 Medicare Part D claims for 32 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 44% of claims.
Most prescribed
- Latanoprost49 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.
Industry payments in 2024: $26.06
1 payment: food and beverage; the largest payer was Glaukos Corporation. 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.
Bills Medicare through one group practice
- Allard Eye Care PLLCWeatherford, OK
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marshall Patrick Day among 892 optometrist records in Oklahoma
Marshall Patrick Day, OD 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 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 55% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1977 · median 2008 among the 620 with a school on file
- Record last updated2019 · 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).
4 optometrist records list a practice address in Clinton
They are 4 of the 321 NPPES records with a practice address in Clinton, and 892 optometrist records in Oklahoma.
All 892 in Oklahoma → Every provider in Clinton → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- James Coffey, O.D.Clinton, OK 736011902020050
- Tara Comingdeer Fields, ODClinton, OK 736011861166241
- Randi Day, O.D.Clinton, OK 736011063678449
- Daniel Bintz, O.D.Elk City, OK 736441033203765
- John Edwards, O.D.Elk City, OK 736441821059940
- Scott Ellis, O.D.Elk City, OK 736441417975079
- Jessica Greene, O.D.Elk City, OK 736441083067490
- Colby Roberts, ODElk City, OK 736441972852820
Common questions
What is Marshall Patrick Day, OD's NPI number?
Marshall Patrick Day, OD's National Provider Identifier (NPI) is 1588614960, issued on May 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marshall Patrick Day, OD located?
The NPPES record lists a practice address at 565 S 30TH Street, Clinton, OK, 73601. Phone: (580) 323-5421. Providers update this record themselves, so call before visiting.
How can I verify Marshall Patrick Day, OD's license?
NPPES lists Oklahoma license number 918, as entered by the provider. Search the Oklahoma board that licenses this profession; the NPPES record confirms identity only.
How much does Marshall Patrick Day, OD prescribe under Medicare Part D?
In 2024, Marshall Patrick Day, OD had 100 Medicare Part D claims for 32 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.