John W. Marohn, O.D.
Optometrist · Saint Joseph, MI
John W. Marohn, O.D. is an optometrist with a practice address in Saint Joseph, Michigan, and NPI 1548265879, issued on Jun 14, 2005. Check the license (Michigan 4901003578, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John W. Marohn
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 4901003578 MI
Self-reported in NPPES; status is on the state search - Practice location
- 2848 Niles RD, Saint Joseph, MI 49085
- Phone
- (269) 428-3300
- Enumerated
- Jun 14, 2005
- Record last updated
- Jan 26, 2023
- Fax
- (269) 428-5005
- Medicaid ID
- 3186238 MI
- Medicare enrollment
- Enrolled (PECOS I20100726000805); accepts Medicare assignment
- Medical or professional school
- Ferris State College - College Of Optometry, 1991
- Entity
- Type 1 · individual
8 nearest optometrist records → All 1,963 in Michigan → Look up another NPI →
Also registered at 2848 Niles RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ronald McKey, M.D.Ophthalmology Physician1700881166
- Rachel McKurasOptometrist1932953205
- Benjamin Nicholson, M.D., M.A.Retina Specialist (Ophthalmology) Physician1003016916
Verify John W. Marohn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Michigan board licenses this profession
Search for license 4901003578Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
17% fewer Medicare Part D claims than the average optometrist in 2024
229 Medicare Part D claims for 119 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of claims.
Most prescribed
- Latanoprost50 claims
- Prednisolone Acetate45 claims
- Timolol Maleate20 claims
- Ketorolac Tromethamine19 claims
- Neomycin-Polymyxin-Dexameth19 claims
- Erythromycin18 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: $1,756.47
3 payments; by number, the most common kind was food and beverage; the largest payer was RxSight Inc. 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
- Great Lakes Eye Care PCSaint Joseph, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John W. Marohn among 1,963 optometrist records in Michigan
John W. Marohn, O.D. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 89% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1991 · median 2009 among the 1,121 with a school on file
- Record last updated2023 · 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).
21 optometrist records list a practice address in Saint Joseph
They are 21 of the 1,038 NPPES records with a practice address in Saint Joseph, and 1,963 optometrist records in Michigan.
All 1,963 in Michigan → Every provider in Saint Joseph → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Mikaela Betka, ODSaint Joseph, MI 490851093199010
- Carrie Campbell, ODSaint Joseph, MI 490851619030947
- Clayton Cashen, O.D.Saint Joseph, MI 490851720393507
- Heather Cotter, O.D.Saint Joseph, MI 490851962610840
- Steven Day, ODSaint Joseph, MI 490851578843637
- Daniel Dudley, O.D.Saint Joseph, MI 490851962539163
- Robert Flood, O.D.Saint Joseph, MI 490851356424840
- Danielle Lower, O.D.Saint Joseph, MI 490851891134821
Common questions
What is John W. Marohn, O.D.'s NPI number?
John W. Marohn, O.D.'s National Provider Identifier (NPI) is 1548265879, issued on Jun 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John W. Marohn, O.D. located?
The NPPES record lists a practice address at 2848 Niles RD, Saint Joseph, MI, 49085. Phone: (269) 428-3300. Providers update this record themselves, so call before visiting.
How can I verify John W. Marohn, O.D.'s license?
NPPES lists Michigan license number 4901003578, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.
How much does John W. Marohn, O.D. prescribe under Medicare Part D?
In 2024, John W. Marohn, O.D. had 229 Medicare Part D claims for 119 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.