Katherine Marie Marshall, OD
Optometrist · Dowagiac, MI
Katherine Marie Marshall, OD is an optometrist with a practice address in Dowagiac, Michigan, and NPI 1255740239, issued on Aug 4, 2014. Check the license (Michigan L458478, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katherine Marie Marshall
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- L458478 MI
Self-reported in NPPES; status is on the state search - Practice location
- 55021 M 51 N, Dowagiac, MI 49047
- Phone
- (269) 782-3476
- Enumerated
- Aug 4, 2014
- Record last updated
- Aug 4, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20141103002221); accepts Medicare assignment
- Medical or professional school
- Indiana University - School Of Optometry, 2014
- Entity
- Type 1 · individual
8 nearest optometrist records → All 1,963 in Michigan → Look up another NPI →
Also registered at 55021 M 51 N
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alan Montgomery, ODOptometrist1568444735
Verify Katherine Marie Marshall in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Michigan board licenses this profession
Search for license L458478Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% fewer Medicare Part D claims than the average optometrist in 2024
106 Medicare Part D claims for 44 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 33% of claims.
Most prescribed
- Latanoprost43 claims
- Timolol Maleate17 claims
- Tobramycin-Dexamethasone13 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: $37.20
2 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.
Bills Medicare through one group practice
- Southwest Vision Center IncThree Rivers, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Marie Marshall among 1,963 optometrist records in Michigan
Katherine Marie Marshall, OD is one of 1,963 optometrist records with a practice address in Michigan. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 69% of them.
- NPI issued2014 · 69% of these records are older, 29% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2014 · median 2009 among the 1,121 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 Michigan 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 Dowagiac
They are 2 of the 125 NPPES records with a practice address in Dowagiac, and 1,963 optometrist records in Michigan.
All 1,963 in Michigan → Every provider in Dowagiac → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Alan Montgomery, ODDowagiac, MI 490471568444735
- Julie McMullen, O.D.Kalamazoo, MI 490481356402739
- Kirsten StoremskiKalamazoo, MI 490481639006562
- Mark Sutkowi, ODKalamazoo, MI 490481245334671
- Morgan BurchBattle Creek, MI 490371013709716
- Brian Doyle, O.D.Battle Creek, MI 490371144691221
- Kyle KluteBattle Creek, MI 490371235556804
- Dawn Kondor, ODBattle Creek, MI 490371184552713
Common questions
What is Katherine Marie Marshall, OD's NPI number?
Katherine Marie Marshall, OD's National Provider Identifier (NPI) is 1255740239, issued on Aug 4, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Marie Marshall, OD located?
The NPPES record lists a practice address at 55021 M 51 N, Dowagiac, MI, 49047. Phone: (269) 782-3476. Providers update this record themselves, so call before visiting.
How can I verify Katherine Marie Marshall, OD's license?
NPPES lists Michigan license number L458478, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.
How much does Katherine Marie Marshall, OD prescribe under Medicare Part D?
In 2024, Katherine Marie Marshall, OD had 106 Medicare Part D claims for 44 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.