Martin Jon Williamson, OD
Optometrist · La Crosse, WI
Martin Jon Williamson, OD is an optometrist with a practice address in La Crosse, Wisconsin, and NPI 1740778646, issued on Apr 25, 2018. Check the license (Wisconsin 3509, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Martin Jon Williamson
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 3509 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1836 South Ave, La Crosse, WI 54601
- Phone
- (608) 782-7300
- Enumerated
- Apr 25, 2018
- Record last updated
- Aug 31, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20180910002829); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest optometrist records → All 1,161 in Wisconsin → Look up another NPI →
Also registered at 1836 South Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Grace AbichtCertified Registered Nurse Anesthetist1003651555
- Paul Abicht, CRNACertified Registered Nurse Anesthetist1528061843
- Mateen Abidi, M.DCardiovascular Disease Physician1730333980
Verify Martin Jon Williamson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 3509Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1% fewer Medicare Part D claims than the average optometrist in 2024
274 Medicare Part D claims for 109 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 35% of claims.
Most prescribed
- Latanoprost104 claims
- Prednisolone Acetate46 claims
- Timolol Maleate25 claims
- Doxycycline Monohydrate16 claims
- Dorzolamide-Timolol14 claims
- Neomycin-Polymyxin-Dexameth13 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.
Bills Medicare through one group practice
- Gundersen Clinic LtdDecorah, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Martin Jon Williamson among 1,161 optometrist records in Wisconsin
Martin Jon Williamson, OD is one of 1,161 optometrist records with a practice address in Wisconsin. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 81% of them.
- NPI issued2018 · 81% of these records are older, 17% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2018 · median 2008 among the 752 with a school on file
- Record last updated2018 · 62% 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 Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
43 optometrist records list a practice address in La Crosse
They are 43 of the 3,735 NPPES records with a practice address in La Crosse, and 1,161 optometrist records in Wisconsin.
All 1,161 in Wisconsin → Every provider in La Crosse → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Thomas Edwards, ODLa Crosse, WI 546011417952524
- Richard Foss, ODLa Crosse, WI 546011558335224
- Alan Hecht, ODLa Crosse, WI 546011003806506
- Gretchen Kelly, ODLa Crosse, WI 546011538159041
- Steven Laliberte, ODLa Crosse, WI 546011467442582
- Filomena Larson, ODLa Crosse, WI 546011215933395
- John Larson, ODLa Crosse, WI 546011013913912
- Lynn McWilliams, ODLa Crosse, WI 546011710981287
Common questions
What is Martin Jon Williamson, OD's NPI number?
Martin Jon Williamson, OD's National Provider Identifier (NPI) is 1740778646, issued on Apr 25, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Martin Jon Williamson, OD located?
The NPPES record lists a practice address at 1836 South Ave, La Crosse, WI, 54601. Phone: (608) 782-7300. Providers update this record themselves, so call before visiting.
How can I verify Martin Jon Williamson, OD's license?
NPPES lists Wisconsin license number 3509, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Martin Jon Williamson, OD prescribe under Medicare Part D?
In 2024, Martin Jon Williamson, OD had 274 Medicare Part D claims for 109 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.