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Provider Profile

Marshall P. Day, OD

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At a glance

About Dr. Day

Marshall P. Day, OD is an optometrist based in Clinton, OK. Marshall is a 1977 graduate of Southern College of Optometry. According to Medicare claims data, Marshall cared for 445 Medicare patients across 478 services. The services billed most often include established patient complete exam of visual system, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and imaging of retina. The provider's National Provider Identifier (NPI) is 1588614960.

Factual summary compiled by Guide.md from public records; not written by this provider.

Education & Training

Specialty

Optometrist (Primary)

Credentials & Licensing

OK licenceAs reported to the NPI registry
No. 918As reported
NPINational Provider Identifier
1588614960Issued 2006

As reported to the NPI registry ↗

Medicare information

Accepts Medicare assignmentYes
Medicare opt-outNo
Can order and refer in MedicareYes

Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.

Common questions

What is Dr. Day's specialty?

Dr. Day is an optometrist in Clinton, OK. That is the designation recorded for this NPI in the federal registry.

NPI registry

Where can I find Dr. Day?

Dr. Day is listed at 565 S 30Th Street, Clinton, OK 73601. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

How do I contact Dr. Day?

The number on file is (580) 323-5421. Contact the office directly to confirm availability and scheduling.

NPI registry

What is Dr. Day's NPI number?

Dr. Day's National Provider Identifier is 1588614960. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.

NPI registry

What is Dr. Day's medical education?

Dr. Day attended Southern College of Optometry, graduating in 1977. This comes from the CMS National Downloadable File.

CMS public data

How long has Dr. Day been practicing?

Dr. Day has 49 years experience. Calculated from a graduation year of 1977, reported in the CMS National Downloadable File.

CMS public data

What is Dr. Day known for?

According to Medicare billing data, Dr. Day performs procedures including removal of cataract with insertion of prosthetic lens; provides treatments such as established patient complete exam of visual system and imaging of retina, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.

Medicare claims

Has Dr. Day confirmed this information?

Not yet. This profile is built from public federal data and has not been confirmed by Dr. Day. If this is you, claiming it is free.

Guide.md

Guide.md listings do not constitute medical advice or an endorsement.

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